Model 7431 VT Plus Operator’s Manual LANDOLL CORPORATION 1900 North Street Marysville, Kansas 66508 (785) 562-5381 800-428-5655 ~ WWW.LANDOLL.
Table of Contents 1 Introduction Understanding Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Standard Specifications 3 Assembly Instructions 7431 VT Plus Frame and Hitch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Leveler Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Manual Leveler . . .
Hydraulic Leveler Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 Hitch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 Scraper Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13 Front Gauge Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction The Landoll Model 7431 VT Plus is a quality product designed to give years of trouble free performance. By following each section of this manual, your system will perform as designed for you and your operation CHAPTER 1 gives basic instructions on the use of this manual. CHAPTER 2 gives product specifications. These specifications supply lengths and measures for your equipment.
INTRODUCTION Understanding Safety Statements You will find various types of safety information on the following pages and on the machine signs (decals) attached to the vehicle. This section explains their meaning. The Safety Alert Symbol means ATTENTION! YOUR SAFETY IS INVOLVED! DANGER Danger means a life-threatening situation exists. Death can occur if safety measures or instructions on this label are not properly followed.
Chapter 2 Standard Specifications 7431 VT Plus Model No. 7431-20 Working Width Transport Width Transport Height Blade Diameter No. Of Blades No. Of Bearings Tire Size And Ply Spindle Size Wheel Bolt Pattern Estimated Weight (w/ 6 Ga. Blade Option) (Lbs.
STANDARD SPECIFICATIONS RECOMMENDED TORQUE SPECIFICATION FOR LUG BOLTS AND NUTS BOLT SIZE 9/16-18 (Heavy Duty Disc) 5/8-18 (Heavy Duty Disc) TORQUE (FT. LBS.) 80 - 90 ft. lbs 85 - 100 ft. lbs WARNING 7431-33 VT Plus models have two wheel and tire sizes available. Do not install a tire made for a standard 15” rim diameter on a 15.5” rim diameter. Mixing wheel and tire sizes can result in serious damage to the machine or serious personal injury.
STANDARD SPECIFICATIONS LANDOLL CORPORATION GENERAL TORQUE SPECIFICATIONS (REV. 4/97) THIS CHART PROVIDES TIGHTENING TORQUES FOR GENERAL PURPOSE APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS OR DRAWING. ASSEMBLY TORQUES APPLY TO PLATED NUTS AND CAPSCREWS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED CONDITION). THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
STANDARD SPECIFICATIONS LANDOLL CORPORATION HYDRAULIC FITTING TORQUE SPECIFICATIONS 37o JIC, ORS, & ORB (REV. 10/97) THIS CHART PROVIDES TIGHTENING TORQUES FOR HYDRAULIC FITTING APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS OR DRAWING. ASSEMBLY TORQUES APPLY TO PLATED CARBON STEEL AND STAINLESS STEEL FITTINGS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED CONDITION). THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
STANDARD SPECIFICATIONS 9” 97-3/4” 24-1/2” 26-3/4” 114” 26” 70” 7431-20 top p1 Figure 2-1: Wing Stabilizer and Light Bracket Placement (20' Model) (Left Half) 2-5
STANDARD SPECIFICATIONS 8” 133” 43” 26-3/4” 114” 26” 70” 7431-20 top p2 Figure 2-2: Wing Stabilizer and Light Bracket Placement (20' Model) (Right Half) 2-6 F-561-0113 Edition
STANDARD SPECIFICATIONS 9” 97-3/4” 24-1/2” 26-3/4” 114” 28” 91” 7431-23 top p1 Figure 2-3: Wing Stabilizer and Light Bracket Placement (23' Model) (Left Half) 2-7
STANDARD SPECIFICATIONS 8” 133” 43” 26-3/4” 114” 28” 91” 7431-23 top p2 Figure 2-4: Wing Stabilizer and Light Bracket Placement (23' Model) (Right Half) 2-8 F-561-0113 Edition
STANDARD SPECIFICATIONS 9” 97-3/4” 24-1/2” 26-1/2” 114” 30” 114” 7430-26 top p1 Figure 2-5: Wing Stabilizer and Light Bracket Placement (26' Model) (Left Half) 2-9
STANDARD SPECIFICATIONS 8” 133” 43” 26-1/2” 114” 30” 114” 7431-26 top p2 Figure 2-6: Wing Stabilizer and Light Bracket Placement (26' Model) (Right Half) 2-10 F-561-0113 Edition
STANDARD SPECIFICATIONS 9” 97-3/4” 24-1/2” 26-3/4” 114” 30” 129” 7430-29 top p1 Figure 2-7: Wing Stabilizer and Light Bracket Placement (29' Model) (Left Half) 2-11
STANDARD SPECIFICATIONS 8” 133” 43” 26-3/4” 114” 30” 129” 7430-29 top p2 Figure 2-8: Wing Stabilizer and Light Bracket Placement (29' Model) (Right Half) 2-12 F-561-0113 Edition
STANDARD SPECIFICATIONS 14-1/4” 96” 91” 24” 97” 18” 114” 7431-33 top p1 Figure 2-9: Wing Stabilizer and Light Bracket Placement (33' Model) (Left Half) (Prior to July, 2012) 2-13
STANDARD SPECIFICATIONS 14-1/4” 132” 46” 18” 114” 24” 97” 7431-33 top p2 Figure 2-10: Wing Stabilizer and Light Bracket Placement (33' Model) (Right Half) (Prior to July, 2012) 2-14 F-561-0113 Edition
STANDARD SPECIFICATIONS 14-1/4” 96” 46” 27” 156” 129” 33” 7431-33 top p1 after 07-2012 Figure 2-11: Wing Stabilizer and Light Bracket Placement (33' Model) (Left Half) (After July, 2012) 2-15
STANDARD SPECIFICATIONS 14-1/4” 132” 46” 27” 156” 22-1/2” 129” 33” 7431-33 top p2 after 07-2012 Figure 2-12: Wing Stabilizer and Light Bracket Placement (33' Model) (Right Half) (After July, 2012) 2-16 F-561-0113 Edition
STANDARD SPECIFICATIONS Page Intentionally Blank 2-17
STANDARD SPECIFICATIONS 2-18 F-561-0113 Edition
Chapter 3 Assembly Instructions It is very important that your new 7431 VT Plus be properly assembled, adjusted and lubricated before use. Illustrations to assist with the assembly process are provided in Section 2, “Standard Specifications”. They show proper disc gang, wing stabilizer bracket, and light mounting bracket spacing. Illustrations in this section show proper assembly procedures. Remove paint from grease fittings. Replace any grease fittings that are damaged or missing.
ASSEMBLY INSTRUCTIONS 3/8-16 X 2-1/2 OR 3/8-16 X 3 OR 3/8-16 X 4-1/2 HEX HEAD CAP SCREW 3/8W FLAT WASHER HOSE CLAMP 3/4-10 PREVAILING TORQUE FLANGE NUT 1/4-20 X 1 HEX HEAD CAP SCREW WING NUT HOSE HOLDER CLAMP 3/8-16 HEX NUT 3/8-16 HEX LOCK NUT CENTER FRAME ASSEMBLY DETAIL A 1/2-13 X 11 HEX HEAD CAP SCREW HOSE HOLDER CLAMP SEE DETAIL A HOSE HOLDER BRACKET 3/8-16 X 3-1/2 OR 3/8-16 X 4-1/2 W/ HYD REELS ALL THREAD SCREW 1-1/8-7 HEX LOCK NUT HITCH WELDMENT 10 AND 14 GA MACHINE BUSHINGS 3/4-16 X 5-1/2 H
ASSEMBLY INSTRUCTIONS 7431 VT Plus Frame and Hitch Assembly IMPORTANT Read all safety precautions at the front of the section before attempting any of the following procedures. 1. Place the center frame assembly on stands approximately 36” high. The assembly area should be a large level area of sufficient size to accommodate the disc when fully assembled. WARNING Do not attempt to lift heavy parts (such as the frame, disc gangs, rock shaft, and pull hitch) manually.
ASSEMBLY INSTRUCTIONS 1”N FLAT WASHER 1 X 7-7/8 LEVELER PIN FLANGE BEARING ASSEMBLED VIEW FROM REAR OF MACHIINE 13” LEVELER LINK 8” LEVELER LINK LEVELER SCREW ASSEMBLY LEVELER L LINK 5/16 X 2-1/2 SPRING SLOTTED PIN 3/4-10 HEX LOCK NUT 3/4-10 X 3-1/2 HEX HEAD CAP SCREW 1-8 HEX LOCK NUT 1-8 X 4-1/2 HEX HEAD CAP SCREW 1-8 X 4 HEX HEAD CAP SCREW STEEL BUSHING CENTER LEFT LIFT 1-8 X 4-1/2 HEX HEAD CAP SCREW LEVELER BALL JOINT LINK 7431 leveler assembly Figure 3-2: Leveler Assembly Installation 3-4
ASSEMBLY INSTRUCTIONS Leveler Assembly 1. Install a hardened steel wear bushing in the leveler L link (See Figure 3-2.) 2. Attach the leveler L link to the front mount of the center frame with a 1-8 x 4-1/2 hex head cap screw and hex lock nut. 3. With a 1-8 x 4 hex head cap screw and hex lock nut attach the leveler ball joint link to the leveler L link. 4. Connect the bottom end of the leveler ball joint link to the rear mounting holes of the hitch using a 1-8 x 4-1/2 hex head cap screw and hex lock nut.
ASSEMBLY INSTRUCTIONS ASSEMBLED VIEW FROM REAR OF MACHIINE 1/4 ZERK FITTING LEVELER TUBE 5/8-11 HEX LOCK NUT LEVELER CROSS 1-1/2 FLANGE BEARING LEVELER SCREW ASSEMBLY 1-1/2 FLAT WASHER LEVELER HANDLE 5/8-11 X 3-1/2 HEX HEAD CAP SCREW 5/16 X 2-1/2 SPRING SLOTTED PIN FLANGE BEARING 1N FLAT WASHER 3/4-10 HEX LOCK NUT 1-8 HEX LOCK NUT LEVELER LINK BALL JOINT LEVELER CROSS BRACKET 3/4-10 X 3-1/2 HEX HEAD CAP SCREW LEVELER L LINK 1-8 X 4-1/2 HEX HEAD CAP SCREW STEEL BUSHING 1-8 X 4 HEX HEAD CAP SCREW manua
ASSEMBLY INSTRUCTIONS Manual Leveler 1. Using the manual leveler, screw the leveler tube onto the leveler screw assembly (See Figure 3-3.) Initially leave approximately 3” of threads visible, further adjustment may be required. Rotate the tube so that the zerk hole in the threaded end is pointing upward. 2. Install the manual leveler handle assembly into the front end of the leveler tube and fasten with two 5/8-11 x 3-1/2 hex head cap screws and hex lock nuts.
ASSEMBLY INSTRUCTIONS LEVELER TUBE 3/8-16 HEX LOCK NUT 1/4 ZERK FITTING LEVEL INDICATOR ROD LEVELER SPRING NUT 1/2-13 X 1-3/4 HEX HEAD CAP SCREW 3/8W FLAT WASHER 1/8 HAIRPIN LEVEL INDICATOR GAUGE AND DECAL LEVELER CROSS 1/2-13 HEX LOCK NUT 3-1/2 X 6 CYLINDER LEVELER SCREW ASSEMBLY 1/2-13HEX LOCK NUT 1-1/2-6 HEX NUT LEVELER PIN 1/2-13 X 2 HEX HEAD CAP SCREW 5/16 X 2-1/2 SPRING SLOTTED PIN FLANGE BEARING 1N FLAT WASHER LEVELER CROSS BRACKET HOSE,64” 90 ELBOW W/ 1/32 RESTRICTOR 3/4-10 X 3-1/2 HEX H
ASSEMBLY INSTRUCTIONS Hydraulic Leveler (Option) 1. Thread a 1-1/2-6 hex nut onto the leveler screw assembly (See Figure 3-4.) Initially leave approximately 7” of threads visible between the 1-1/2-6 hex nut and the leveler spring nut. Further adjustment may be required. 2. Thread the leveler tube onto the leveler screw assembly until it contacts the 1-1/2-6 hex nut. Rotate the tube so the grease zerk hole in the threaded end points upward. 3. Slide the leveler cross over the front end of the leveler tube.
ASSEMBLY INSTRUCTIONS NOTE: MOST RIGHT DISC GANG ASSEMBLIES NOT SHOWN FOR CLARITY.
ASSEMBLY INSTRUCTIONS NOTE: MOST RIGHT DISC GANG ASSEMBLIES NOT SHOWN FOR CLARITY.
ASSEMBLY INSTRUCTIONS 3/4-10 X 2 HEX HEAD CAP SCREW WING LOCK PIN RIGHT WING FRAME 1/4 X 3 ROLL PIN FRONT GAUGE WHEEL ASSEMBLY 1-8 X 6 HEX HEAD CAP SCREW WING STABILIZER U-BOLT WING STABILIZER BRACKET 3/16 HAIR PIN 5/8-11 HEX LOCK NUT GAUGE WHEEL SPACER 1-8 HEX LOCK NUT 3/4-10 HEX LOCK NUT WING LIFT WHEEL ASSEMBLY LEFT WING FRAME wing_assembly - 7431-26 Figure 3-8: Wing Frame Installation 3-12 F-561-0113 Edition
ASSEMBLY INSTRUCTIONS Center Frame Tires Wing Frames 1. Install the tire and wheel assemblies on the center section. 1. Place the wing frames on top of the wing gang assemblies and attach using 3/4-10 x 2 hex head cap screws and hex lock nuts (See Figure 3-8.). 2. On 20’, 23', and 26’ models, use 12.5L x 15 tire and wheel assembly. On 29' models, use 380/55R-16.5 Goodyear tire and wheel assembly. On 33' models, use 32/1550 x 16.5 Galaxy, 400/60-15.5 Trelleborg, or 380/55R-16.
ASSEMBLY INSTRUCTIONS NOTE: RESTRICTOR FITTINGS ARE BLACK IN COLOR FOR A VISUAL CHECK WHEN INSTALLING THE HOSES. ALL FOLD CYLINDERS HAVE A 90 FITTING W/ 1/16 RESTRICTOR FACTORY INSTALLED IN THE ROD END AND A NORMAL 90 FITTING FACTORY INSTALLED IN THE BASE END.
ASSEMBLY INSTRUCTIONS 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT SLAVE DECAL 3-3/4 X 10 HYDRAULIC CYLINDER 3/8 X 96 HOSE ASSEMBLY SLAVE 3/8 X 136 HOSE ASSEMBLY 8 PORT MANIFOLD MASTER DECAL 4 X 10 HYDRAULIC CYLINDER 3/8 X 30 HOSE ASSEMBLY MASTER 3/8 X 24 HOSE ASSEMBLY 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (H) (F) 8 PORT MANIFOLD 3/8 X 136 HOSE ASSEMBLY MASTER 3-3/4 X 10 HYDRAULIC CYLINDER 3/8 X 184 HOSE ASSEMBLY (A) (B) 3/4-16 MALE COUPLER (E) 3/8 X 36 HOSE ASSEMBLY 90 AD
ASSEMBLY INSTRUCTIONS 5/16 X 2-1/2 SPRING SLOTTED PIN 1-1/4N FLAT WASHER FOLD PIN 90 ELBOW W/ RESTRICTOR 4 X 30 HYDRAULIC CYLINDER 3/8 X 40 HOSE ASSEMBLY 3/4-16 MALE COUPLER 3/8 X 24 HOSE ASSEMBLY (D) 8 PORT MANIFOLD (C) (E) 3/8 X 24 HOSE ASSEMBLY (A) 3/8 X 306 HOSE ASSEMBLY (B) (F) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT 4 X 30 HYDRAULIC CYLINDER 3/8 X 40 HOSE ASSEMBLY FOLD PIN 90 ELBOW W/ RESTRICTOR 1-1/4N FLAT WASHER 5/16 X 2-1/2 SPRING SLOTTED PIN FRONT OF MACHINE (A) (C) (G
ASSEMBLY INSTRUCTIONS 16 PORT MANIFOLD SLAVE DECAL 3-3/4 X 10 HYDRAULIC CYLINDER 3/8 X 112 HOSE ASSEMBLY SLAVE 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT MASTER DECAL 3/8 X 150 HOSE ASSEMBLY 4 X 10 HYDRAULIC CYLINDER 3/8 X 30 HOSE ASSEMBLY MASTER 3/8 X 24 HOSE ASSEMBLY LIMIT VALVE (G) (P) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (L) 16 PORT MANIFOLD 3/8 X 150 HOSE ASSEMBLY (D) 3/4-16 MALE COUPLER (K) 90 ADAPTER 3/8 X 36 HOSE ASSEMBLY MASTER 3-3/4 X 10 HYDRAULIC CYLINDE
ASSEMBLY INSTRUCTIONS 5/16 X 2-1/2 SPRING SLOTTED PIN 1-1/4N FLAT WASHER FOLD PIN 90 ELBOW W/ RESTRICTOR 4 X 30 HYDRAULIC CYLINDER 3/8 X 60 HOSE ASSEMBLY 3/4-16 MALE COUPLER 3/8 X 31 HOSE ASSEMBLY (F) 3/8 X 204 HOSE ASSEMBLY (E) (A) (I) (B) (J) 3/8 X 33 HOSE ASSEMBLY 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT 4 X 30 HYDRAULIC CYLINDER 16 PORT MANIFOLD 3/8 X 60 HOSE ASSEMBLY 90 ELBOW W/ RESTRICTOR FOLD PIN 1-1/4N FLAT WASHER 5/16 X 2-1/2 SPRING SLOTTED PIN FRONT OF MACHINE fold hyd assy
ASSEMBLY INSTRUCTIONS 8 PORT MANIFOLD 16 PORT MANIFOLD SLAVE DECAL 3/8 X 128 HOSE ASSEMBLY 3-3/4 X 10 HYDRAULIC CYLINDER SLAVE MASTER DECAL 3/8 X 165 HOSE ASSEMBLY 4 X 10 HYDRAULIC CYLINDER MASTER 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT 16 PORT MANIFOLD 3/8 X 168 HOSE ASSEMBLY (P) (L) 1/8 HAIR PIN CYLINDER STOP L-PIN lift hyd assy 29’ op LIMIT VALVE 3/8 X 184 HOSE ASSEMBLY (C) (D) 3/4-16 MALE COUPLER (K) 3/8 X 36 HOSE ASSEMBLY MASTER 90 ADAPTER 3/8 X 204 HOSE ASSEMBLY 4 X 10 HYD
ASSEMBLY INSTRUCTIONS 1-1/4N FLAT WASHER (Q) (W) (U) (S) (R) FRONT OF MACHINE (X) (V) (T) 5/16 X 2-1/2 SPRING SLOTTED PIN 1-1/4N FLAT WASHER PLUG PORTS U & V FOLD PIN 90 ELBOW W/ RESTRICTOR 4 X 30 HYDRAULIC CYLINDER FOLD PIN 3/8 X 60 HOSE ASSEMBLY 90 ELBOW W/ RESTRICTOR ADAPTER 90 3/8 X 40 HOSE ASSEMBLY (W) 3/8 X 24 HOSE ASSEMBLY 8 PORT MANIFOLD 3/8 X 24 HOSE ASSEMBLY ADAPTER 90 3/4-16 MALE COUPLER (F) (M) (X) (Q) (T) (R) 3/8 x 100 HOSE ASSEMBLY (S) 3/8 X 31 HOSE ASSEMBLY (N) (J) (I
ASSEMBLY INSTRUCTIONS 8 PORT MANIFOLD 16 PORT MANIFOLD SLAVE DECAL 3-3/4 X 10 HYDRAULIC CYLINDER 3/8 X 136 HOSE ASSEMBLY SLAVE 3/8 X 196 HOSE ASSEMBLY MASTER DECAL 4 X 10 HYDRAULIC CYLINDER MASTER 3/8 X 42 HOSE ASSEMBLY 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT 3/8 X 27 HOSE ASSEMBLY 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (P) 16 PORT MANIFOLD (L) LIMIT VALVE (G) 3/8 X 184 HOSE ASSEMBLY (C) (D) 3/4-16 MALE COUPLER (K) 90 ADAPTER 3/8 X 48 HOSE ASSEMBLY 3/8 X 196 HOSE
ASSEMBLY INSTRUCTIONS 5/16 X 2-1/2 SPRING SLOTTED PIN 1-1/4N FLAT WASHER (Q) (W) (U) (S) FRONT (R) OF MACHINE (X) (V) (T) PLUG PORTS W & X FOLD PIN 1-1/4N FLAT WASHER 4 X 30 HYDRAULIC CYLINDER FOLD PIN 90 ELBOW W/ RESTRICTOR 90 ELBOW W/ RESTRICTOR 3/8 X 82 HOSE ASSEMBLY 3/8 X 48 HOSE ASSEMBLY ADAPTER 90 3/4-16 MALE COUPLER 3/8 X 67 HOSE ASSEMBLY 3/8 X 33 HOSE ASSEMBLY (V) (F) (Q) (M) (U) (E) (A) (T) (R) 3/8 X 64 HOSE ASSEMBLY ADAPTER 90 (S) 8 PORT MANIFOLD 3/8 X 90 HOSE ASSEMBLY 1
ASSEMBLY INSTRUCTIONS 5/16 X 2-1/2 SPRING SLOTTED PIN FOLD PIN 4 X 30 HYDRAULIC CYLINDER FOLD PIN (W) (U) (S) (R) (X) (V) (T) FRONT OF MACHINE 1-1/4N FLAT WASHER 1-1/4N FLAT WASHER (Q) PLUG PORTS U & V 90 ELBOW W/ RESTRICTOR 3/8 X 60 HOSE ASSEMBLY 90 ELBOW W/ RESTRICTOR ADAPTER 90 3/8 X 24 HOSE ASSEMBLY 3/8 X 40 HOSE ASSEMBLY (W) (X) 3/8 X 31 HOSE ASSEMBLY 3/4-16 MALE COUPLER (F) (M) (Q) (T) 3/8 X 24 HOSE ASSEMBLY (R) 3/8 x 100 HOSE ASSEMBLY (S) (N) (J) 8 PORT MANIFOLD ADAPTER 90 FOLD
ASSEMBLY INSTRUCTIONS BOLT-ON WING FOLD MOUNT 1/2-13 X 3-1/2 HEX HEAD CAP SCREW 3/4-10 X 2-1/4 HEX HEAD CAP SCREW GR8 WING STABILIZER U-BOLT FOLD PIN 1/2-13 HEX LOCK NUT MANIFOLD BRACKET 1-1/4N FLAT WASHER 8 PORT MANIFOLD 5/16 X 2-1/2 SPRING SLOTTED PIN 4 X 30 HYDRAULIC CYLINDER 5/8-11 HEX LOCK NUT FOLD CYLINDER MOUNT CENTER BOLT-ON WING FOLD MOUNT ON THIS TUBE 5/8 X 4 X 6-1/2 U-BOLT CENTER BOLT-ON WING FOLD MOUNT ON THIS TUBE m156119 op Figure 3-19: Bolt On Wing Fold Cylinder and Fold Mount Pl
ASSEMBLY INSTRUCTIONS Hydraulic Installation NOTE Refer to 3-9 for hydraulic cylinder fittings (factory installed and those installed during setup). Refer to Figures 3-10- 3-11 for lift and fold hydraulic diagrams for 7431-20' and 7431-23' models. Refer to Figures 3-12 - 3-13 for lift and fold hydraulic diagrams for 7431-26' model. See Figures 3-18 - 3-19 for optional bolt on wing fold hydraulic diagram and fold cylinder placement drawing.
ASSEMBLY INSTRUCTIONS #8-32 X 1/2 PAN HEAD SLOTTED SCREW 34” EXTENSION RH BRACKET WELDMENT REAR WARNING LIGHT HARNESS MAIN WARNING LIGHT HARNESS WING STABILIZER U-BOLT 1/4-20 HEX LOCK NUT 1/2-13 HEX LOCK NUT LH BRACKET WELDMENT 1/2-13 X 8-1/2 HEX HEAD CAP SCREW YELLOW REFLECTOR AMBER SINGLE LAMP SMV EMBLEM 1/4-20 X 1-1/4 HEX HEAD CAP SCREW 1/2-13 HEX LOCK NUT 1/4-20 X 3/4 HEX HEAD CAP SCREW ORANGE STRIPE WARNING LIGHT BAR U-BOLT RED REFLECTOR 5/8-11 FLANGE HEAD SERRATED NUT TAIL LIGHT SUPPORT
ASSEMBLY INSTRUCTIONS Light and SMV Bracket Installation (Prior to August, 2013) 1. Attach lights and mounting brackets to the center frames using u-bolts, 1/2-13 x 8-1/2 hex head cap screws, flange head serrated nuts, and hex lock nuts (See Figure 3-21.) Refer to pages 2-7 thru 2-16 for light bracket placements. 2. Mount enhanced lighting module on right hand tail light bracket using #8-32 x 1/2 pan head slotted screw and nuts.
ASSEMBLY INSTRUCTIONS NOTE: LED LIGHTS, HARNESS, AND MODULE DO NOT INTERCHANGE WITH PREVIOUS LIGHTING SYSTEM.
ASSEMBLY INSTRUCTIONS 7-PIN 4-PIN CONN TOWER 1 2 3 4 5 6 7 D B A C CIRCUIT GROUND WORK LAMPS LEFT FLASHING & TURN STOP LAMPS RIGHT FLASHING & TURN TAIL LAMPS SWITCHED POWER (12V) 1 WIRE COLOR GROUND BLACK YELLOW RED GREEN BROWN BLUE 2 3 4 5 2-PIN 3-PIN 6-PIN 3-PIN 2-PIN TOWER TOWERSHROUDTOWER TOWER BLACK LEFT TURN WHITE GROUND BROWN TAIL LIGHT YELLOW LEFT TURN GREEN RIGHT TURN RED RIGHT TURN FRONT WARNING HARNESS A A C A B A B C B D B A B E C F REAR WARNING HARNESS m177034 elect
ASSEMBLY INSTRUCTIONS 1-8 X 6-1/2 HEX HEAD CAP SCREW 21” 1-8 HEX LOCK NUT NOTE: SIDE PLATE REMOVED FOR CLARITY 1-1/2 FLANGE BEARING 1-1/2 PIVOT BUSHING 5/16 X 1-1/2 SPRING SLOTTED PIN PIVOT PIN MACHINERY BUSHING REEL ARM 3/4-10 HEX LOCK NUT (DOUBLE NUT) 1-8 HEX NUT 1” LOCK WASHER ADJUSTMENT PIN SNAP RING 1 X 8 ADJUSTMENT BOLT 17” HEAVY SPRING ASSEMBLY REEL/GANG BAR ASSEMBLY GANGBAR MOUNT PLATE 7431 conditioner reel op 3/4-10 X 6 HEX HEAD CAP SCREW Figure 3-24: Conditioner Reel Installation 3-30 F
ASSEMBLY INSTRUCTIONS Conditioner Reel Installation 1. Assemble 1 x 8 adjustment bolt through adjustment pin on frame, 1" lock washer, (2) 1-8 hex nuts, and 17" heavy spring assembly. 2. Install 1-1/2” flange bearing into reel arm. Slide in 1-1/2” pivot bushing. 3. Attach reel arm to upper hole on rear center or wing frame or double mount using 1-8 x 6-1/2 hex head cap screw and hex lock nut. 4. Assemble 17" heavy spring assembly to reel arm using 1" pivot pin, and 5/16 x 1-1/2” spring slotted pins.
ASSEMBLY INSTRUCTIONS 1/4 X 46 HOSE ASSEMBLY 2-1/2 X 1-1/2 CYLINDER 1/4 X 50 HOSE ASSEMBLY 90 ADAPTER 1/4 X 34 HOSE ASSEMBLY BULKHEAD RUN TEE 1/4 X 98 HOSE ASSEMBLY 45 ADAPTER ADAPTER 1/4 X 30 HOSE ASSEMBLY 1/4 X 64 HOSE ASSEMBLY MANIFOLD BRACKET MOUNT (C) STRAIGHT ADAPTER 8 PORT MANIFOLD (D) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (F-1) 1/4 X 60 HOSE ASSEMBLY 1/4 X 75 HOSE ASSEMBLY (E-1) 90 ELBOW ADAPTER TEE 3/4-16 MALE COUPLER (E-2) (A) (F-2) (B) ADAPTER (H) 1/4 X 80 HOSE ASSE
ASSEMBLY INSTRUCTIONS 1/4 X 64 HOSE ASSEMBLY 2-1/2 X 1-1/2 CYLINDER 1/4 X 68 HOSE ASSEMBLY 90 ADAPTER 1/4 X 34 HOSE ASSEMBLY BULKHEAD RUN TEE 1/4 X 98 HOSE ASSEMBLY 45 ADAPTER ADAPTER 1/4 X 30 HOSE ASSEMBLY 1/4 X 64 HOSE ASSEMBLY MANIFOLD BRACKET MOUNT (C) STRAIGHT ADAPTER 8 PORT MANIFOLD (D) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (F-1) 1/4 X 60 HOSE ASSEMBLY 1/4 X 75 HOSE ASSEMBLY (E-1) 90 ELBOW ADAPTER TEE 3/4-16 MALE COUPLER (E-2) (A) (F-2) (B) ADAPTER (H) 1/4 X 80 HOSE ASSE
ASSEMBLY INSTRUCTIONS 1/4 X 80 HOSE ASSEMBLY 2-1/2 X 1-1/2 CYLINDER 1/4 X 84 HOSE ASSEMBLY 90 ADAPTER 1/4 X 34 HOSE ASSEMBLY BULKHEAD RUN TEE 1/4 X 98 HOSE ASSEMBLY 45 ADAPTER ADAPTER 1/4 X 30 HOSE ASSEMBLY 1/4 X 64 HOSE ASSEMBLY MANIFOLD BRACKET MOUNT (C) STRAIGHT ADAPTER 8 PORT MANIFOLD (D) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (F-1) 1/4 X 60 HOSE ASSEMBLY 1/4 X 75 HOSE ASSEMBLY (E-1) 90 ELBOW ADAPTER TEE 3/4-16 MALE COUPLER (E-2) (A) (F-2) (B) ADAPTER (H) 1/4 X 80 HOSE ASSE
ASSEMBLY INSTRUCTIONS 1/4 X 94 HOSE ASSEMBLY 2-1/2 X 1-1/2 CYLINDER 1/4 X 98 HOSE ASSEMBLY 90 ADAPTER 1/4 X 34 HOSE ASSEMBLY BULKHEAD RUN TEE 1/4 X 98 HOSE ASSEMBLY 45 ADAPTER ADAPTER 1/4 X 30 HOSE ASSEMBLY 1/4 X 64 HOSE ASSEMBLY MANIFOLD BRACKET MOUNT (C) STRAIGHT ADAPTER 8 PORT MANIFOLD (D) 1/2-13 X 3-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT (F-1) 1/4 X 60 HOSE ASSEMBLY 1/4 X 75 HOSE ASSEMBLY (E-1) 90 ELBOW ADAPTER TEE 3/4-16 MALE COUPLER (E-2) (A) (F-2) (B) ADAPTER (H) 1/4 X 80 HOSE ASSE
ASSEMBLY INSTRUCTIONS NOTE: CENTER REEL ARM HAS REGULAR SPRING SETUP.
ASSEMBLY INSTRUCTIONS 1-1/2 BEARING FLANGE 1-1/2 PIVOT BUSHING 1-8 HEX LOCK NUT REEL ARM MACHINERY BUSHING PIVOT PIN 5/16 X 1-1/2 SLOTTED SPRING PIN STRAIGHT OR 45 ADAPTER 1-8 X 6-1/2 HEX HEAD CAP SCREW 3/4-10 HEX LOCK NUT CYLINDER TRUNNION 1/2 SPLIT LOCK WASHER 1/2-13 X 1-1/2 HEX HEAD CAP SCREW 90 ADAPTER 2-1/2 X 1-1/2 CYLINDER 1-8 HEX NUT 17” HEAVY SPRING ASSEMBLY CONDITIONER REEL/ GANG BAR ASSEMBLY GANGBAR MOUNT PLATE 3/4-10 X 6 HEX HEAD CAP SCREW 7431 hyd reel assy op Figure 3-30: Finishing Hydra
ASSEMBLY INSTRUCTIONS Finishing Hydraulic Conditioner Reel Installation (Option) NOTES Refer to Figure 3-25 for hydraulic diagram for the 7431-20 model. Refer to Figure 3-26 for hydraulic diagram for the 7431-23 model. 2. Attach 17” spring assembly and 2-1/2 hydraulic cylinder to lower hole on rear frame using cylinder trunnion, cylinder trunnion stop, 1/2-13 x 1-1/2 hex head cap screw, and split lock washer. NOTE On 7431-33 models, center reel arm has regular spring setup.
ASSEMBLY INSTRUCTIONS SEE DETAIL B SEE DETAIL A HOSE CLAMPS ON DISC GANG BAR 7431-20 - NONE USED 7431-23 - 1 7431-26 - 2 (SHOWN) 7431-29/33 - 3 REMOVE EXISTING 3/4-10 X 2 HEX HEAD CAP SCREW/ INSTALL 3/4-10 X 2 HEX HEAD CAP SCREW W/ VALVE MOUNT HINGE SHOWN FOR REFERENCE HOSE HOLDER HOSE CLAMP BULKHEAD PLATE LOCATION TO MOUNT BULKHEAD PLATE (LEFT WING SHOWN) HOSE CLAMPS USED ON ALL MODELS DETAIL A DETAIL B LEFT WING CONDITIONER REEL 45 ADAPTER 90 ADAPTER STRAIGHT ADAPTER 45 ADAPTER CENTER CONDITIONER
ASSEMBLY INSTRUCTIONS 3/4-10 X 5-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT REAR TOW HITCH ARM REAR TOW HITCH CLAMP 5/8-11 X 2-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT CLAMP TOW HITCH PLATE TANDEM ADAPTER HARNESS FRONT MOUNT 3/4-10 X 8 HEX HEAD CAP SCREW AND HEX LOCK NUT COUPLER MOUNT BRACKET REAR TOW HITCH REAR TOW HITCH CLAMP COUPLER PLATE 3/8-16 X 2-1/2 HEX HEAD CAP SCREW AND HEX LOCK NUT REAR MOUNT 3/4-10 X 9 HEX HEAD CAP SCREW AND HEX LOCK NUT HITCH STABILIZER PLATE 7431 rear tow hitch inst Fig
ASSEMBLY INSTRUCTIONS Rear Tow Hitch Installation A rear tow hitch assembly is available for use on the rear of the VT Plus. 1. Attach front clamp tow hitch plates to frame using rear tow hitch clamps, 3/4-10 x 8 hex head cap screws, and hex lock nuts (See Figure 3-33.) Leave all hardware loose until rear tow hitch is completely assembled. NOTE Place front clamp tow hitch plates in front of frame tube on 20’, 23’, 26’, and 29’ models.
ASSEMBLY INSTRUCTIONS Rear Jack Installation Final Assembly A rear jack assembly is available for use on the rear of the VT Plus. 1. Attach a tractor to the implement and charge the lift system hydraulics as described is “Hydraulic Lift System” on page 4-3. IMPORTANT The rear jack tube should be located to the rear of the VT Plus near the center of the frame, but not interfering with the visibility of the SMV sign. 1.
ASSEMBLY INSTRUCTIONS Notes: 3-43
ASSEMBLY INSTRUCTIONS 3-44 F-561-0113 Edition
Chapter 4 Operation and Maintenance DANGER Never allow anyone to ride on the 7431 VT Plus at any time. Allowing a person to ride on the machine can inflict serious personal injury or death to that person. DANGER Disc blades are extremely sharp. Exercise extreme care when working on or near disc blades. Do not allow discs to roll over or fall onto any bodily part. Do not allow wrenches to slip when working near disc blades. Never push wrenches toward disc blades.
OPERATION AND MAINTENANCE Tractor Preparation VT Plus Preparation The Landoll 7431 VT Plus is designed to be pulled by tractor equipped with a double lip or clevis type hitch. If your tractor is not equipped as such, you need to purchase the hitch from your local tractor dealer. If your VT Plus is equipped with the clevis option, this should be removed. The clevis option is only for transport use. Before attaching the VT Plus, prepare the tractor as follows: 1.
OPERATION AND MAINTENANCE Attaching to the Tractor 1. Align the tractor drawbar with the machine. Raise or lower the disc ring hitch, as needed, using the swivel jack. Attach the unit with proper size hitch pin. Hydraulic Lift System The VT Plus is equipped with a rephasing hydraulic lift system to raise and lower the unit in the field. 2. Always place the swivel jack on the interior mount before setting the machine in motion. 3. Clean all hydraulic couplings and attach to the tractor. 4.
OPERATION AND MAINTENANCE 2. The hydraulic system is not filled with oil and should be purged of air before transporting and field operations. Carefully hitch the VT Plus to the tractor and connect the hydraulic lift hoses. Check to make sure the tractor hydraulic reservoir is full of the manufacturer’s recommended oil. Slowly raise the machine, and continue to hold the hydraulic lever until all lift cylinders are fully extended.
OPERATION AND MAINTENANCE Hydraulic Fold System 1. The VT Plus is equipped with a hydraulic fold system to raise and lower the wing frames for narrow transport. 2. Be sure the system is fully charged with hydraulic oil before attempting to fold/unfold the unit. Air in the system can allow uncontrolled dropping of the wing frames causing serious personal injury or machine damage.
OPERATION AND MAINTENANCE 5. To fold/unfold the VT Plus, find a level area large enough to accommodate the VT Plus when it is fully unfolded. The tractor should be stopped and not moving with the unit fully raised. Remove the wing lock pins from the mounts and install them in the storage locations (See Figures 4-6 and 4-7). 3/16 HAIR PIN WING STABILIZER BRACKET IMPORTANT Failure to remove the lock pins when unfolding will result in serious damage to the implement.
OPERATION AND MAINTENANCE General Operation Field Operation 1. The horsepower requirements are typically 8-10 horsepower per foot of cut. This will vary widely due to speed, depth, moisture, residue and types of soils. Local dealers can help in making recommendations for your areas. 1. Raise the unit to take the weight off of the transport locks. Remove the transport locks from the lift cylinders (on the main frame only). Store the transport locks on the retainers above the main lift (See Figure 4-4.
OPERATION AND MAINTENANCE Leveling (Side to Side) 1. An adjustable radius rod connects the center frame lifts together to keep them operating in unison. The radius rod does not level the center frame lift. The radius rod length is determined initially by fully retracting the lift cylinders and adjusting the radius rod until it is loose and tightening the jam nuts. 2. To level the center frame: a. Verify that all of the tires are properly inflated. b.
OPERATION AND MAINTENANCE 3. After adjusting the cylinder rod or rods, the radius rod needs to be adjusted back to a neutral position. This is accomplished by fully retracting the lift cylinders and adjusting the radius rod until it fits between the lifts. Reinstall 1-8 x 4 hex head cap screw, tighten jam nuts, and 1/2 x 1-1/4 square head cup point set screw to prevent radius rod from turning. 4. Leveling the VT Plus side-to-side involves leveling the wing frame to the center frame.
OPERATION AND MAINTENANCE Leveling (Front-to-Rear) LEVELER HANDLE 1. The leveling feature on the VT Plus is used to keep the machine level when raising the unit from a working position to a transport position. The leveling feature is also used to level the unit from front-to-rear to perform a level discing operation in the field. 2. The unit should be level from front to rear and the soil behind the disc should be level without furrows or ridges.
OPERATION AND MAINTENANCE 7” THREADS LEVELER SCREW ASSEMBLY 4 X 30 FOLD CYLINDER 1-1/2-6 HEX LOCK NUT LEVELER TUBE HOSE HOLDER CLAMP LEVEL INDICATOR GAUGE LEVEL INDICATOR ROD CHECK VALVE 7431hydlevel 1 Figure 4-14: Hydraulic Leveler Adjustment Hydraulic Leveler Adjustment If a unit is equipped with an optional hydraulic leveler, adjust to the following dimensions for most field conditions. 3. Loosen the 1-1/2-6 hex lock nut at the rear of the leveler tube (an adjustment wrench is provided for this).
OPERATION AND MAINTENANCE Hitch Adjustment 1. It is important for the VT Plus to maintain a proper draft line with the tractor to do a level job of discing. The draft line will vary depending on soil conditions and tractor drawbar height. The VT Plus is equipped with an adjustable hitch to help insure a proper draft line with the tractor. 2. Generally tractor drawbars greater than 17” tall will require the hitch to be in the upper position. 17” drawbars and below should be in the lower position.
OPERATION AND MAINTENANCE Scraper Adjustment The VT Plus is equipped with rigid scrapers at regular spools with dual scrapers at the disc bearings. 1. Rigid scrapers should be set initially as close to the disc blade as possible without rubbing (approximately 1/8”) (See Figure 4-16.) A slotted hole at the top of each scraper is provided for individual adjustment. Adjustments may be made for entire gangs, by loosening the u-bolts around the angle-iron scraper bars and sliding the whole bar.
OPERATION AND MAINTENANCE Front Gauge Wheels 1. The VT Plus is equipped with castering gauge wheels at the outer front corners of each wing. These gauge wheels are used to limit depth of the wings, and prevent gouging and buckling of wing frames. 2. Gauge wheels are not intended to carry the wing, but prevent excessive depth. Adjust the wheels to carry some weight, but not enough to hold the wing from reaching operating depth set with the main lift hydraulics.
OPERATION AND MAINTENANCE Disc Blades 1. The 7431 VT Plus is equipped with 22" -6 ga. (.197"), 22" -4 ga. (.256), or 22" -4 ga. (.256) rollable low concavity disc blades on both front and rear. The use of other concavity blades can give unpredictable results and is not recommended. 2. Sharpening – In some cases there is a desire to sharpen disc blades for improved cutting. There are several people who roll-sharpen disc blades. Most disc blades used today are made of chrome-boron steel.
OPERATION AND MAINTENANCE Depth Stop Adjustment (Manual) DEPTH STOP TUBE The operating depth of the VT Plus is controlled by a single-point depth stop. The stop is located at the center front of the machine. DEPTH STOP GAUGE 1. Adjust the depth stop by turning the handle in (clockwise) to increase operating depth (See Figure 4-18.) Turn the handle out (counter-clockwise) to decrease operating depth. One turn will equal approximately 3/16” adjustment in depth. 2.
OPERATION AND MAINTENANCE Wheel Bearing Maintenance Hydraulic Maintenance Wheel bearing maintenance should be performed at the beginning of every season of use. Check the wheel bearings periodically for excessive end play. If needed, adjust or replace them using the following procedure: 1. Place the frame on blocks or stands sufficient to lift the tire clear of the ground. 1. Check the tractor hydraulic fluid level per tractor owner's manual and after any leakage.
OPERATION AND MAINTENANCE Transport 6. A safety chain is provided with the implement to insure safe transport. 1. Check and follow all federal, state, and local requirements before transporting the VT Plus. 2. The 7431 should be transported only by tractor required for field operation. The implement weight should not exceed more than 1.5 times the tractor weight.
OPERATION AND MAINTENANCE 7. Check that tires are of proper size, load rating, and inflated to manufacture specifications before transporting. Check wheel lug bolts to insure tightness. 1-3/8 x 10 TRANSPORT LOCKOUT L PIN 8. Know the transport heights and widths of the unit before transporting. Attachments such as leveling harrows can increase the transport dimensions of the implement. Use caution when transporting near bridges and power lines. WARNING Electrocution can occur without direct contact.
OPERATION AND MAINTENANCE 1 9 4 3 4 1 9 1 9 8 5 2 4 6 3 7 1 8 5 7431 lube Figure 4-22: Lubrication Schedule LUBRICATION TABLE ITEM DESCRIPTION INTERVAL (Hours Unless Stated) NO.
OPERATION AND MAINTENANCE Lubrication Maintenance 1. Table 4-1 specifies the number and the period of lubrication points on the 7431 VT Plus. Proper maintenance of your machine will, under normal operating conditions, help to keep it operating at or near its peak performance for an extended period of time. Proper maintenance is also a condition of keeping your warranty in good status (See Figure 4-22.) 2.
OPERATION AND MAINTENANCE Storage 1. The service life of the VT Plus will be extended by proper off-season storage practices. Prior to storing the unit, complete the following procedures: REAR JACK MOUNT REAR FRAME a. Completely clean the unit. b. Inspect the machine for worn or defective parts. Replace as needed. c. Repaint all areas where the original paint is worn off. d. Grease all exposed metal surfaces of shanks, points and discs. LOCK PIN AND 1/4 X 3 ROLL PIN e.
OPERATION AND MAINTENANCE Notes 4-23
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Chapter 5 Troubleshooting Guide The Troubleshooting Guide, shown below, is included to help you quickly locate problems that can happen using your 7431 VT Plus. Follow all safety precautions stated in the previous sections when making any adjustments to your machine.
TROUBLESHOOTING GUIDE PROBLEM PROBABLE CAUSE SOLUTION WHEEL BEARING FAILURE Seals not installed correctly Install seals with the lips pointing outward away from the hub. HYDRAULIC - LIFT CYLINDERS NOT FULLY EXTENDING Lift cylinders not in phase Fully extend cylinders and hold hydraulic lever until all cylinders are fully extended. Cylinders not installed in proper series Wing cylinders are smaller diameter than center cylinders. Reinstall cylinders properly.
TROUBLESHOOTING GUIDE Notes: 5-3
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Equipment from Landoll Corporation is built to exacting standards ensured by ISO 9001:2008 registration at all Landoll manufacturing facilities. Model 7431 VT Plus Operator’s Manual Re-Order Part Number F-561-0113 LANDOLL CORPORATION 1900 North Street Marysville, Kansas 66508 (785) 562-5381 800-428-5655 ~ WWW.LANDOLL.COM Copyright 2010.
