User Manual

ManualsBrandsViking Pump ManualsPumpsTSM141.1: G-LL 125/4125

VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA

TECHNICAL SERVICE MANUAL

SECTION TSM 141.1

PAGE 1 Of 16

ISSUE E

CONTENTS

INTRODUCTION

The illustrations used in this manual are for identification

purposes only and cannot be used for ordering parts. Obtain a

parts list from the factory or a Viking® representative. Always

give complete name of part, part number and material with

model number and serial number of pump when ordering

repair parts. The unmounted pump or pump unit model

number and serial number are on the nameplate.

In the Viking model number system, basic size letters are

combined with series number (125 and 4125) and used to

indicate either an unmounted pump or mounted pump unit.

Introduction . . . . . . . . . . . . . . . . . . . . . . . 1

Safety Information. . . . . . . . . . . . . . . . . . . . 2

Special Information . . . . . . . . . . . . . . . . . . . 3

Maintenance . . . . . . . . . . . . . . . . . . . . . . 3

Packed Pumps . . . . . . . . . . . . . . . . . . . . . 4

Mechanical Seal Pumps . . . . . . . . . . . . . . . . 7

Standard Rubber Bellows Type

(Sizes G, H, HL, K, KK, L, LQ & LL) . . . . . . . . 8

Optional PTFE Seal . . . . . . . . . . . . . . . . .10

Standard Rubber Bellows Type

(Sizes AK & AL) . . . . . . . . . . . . . . . . . . .13

Thrust Bearing Adjustment . . . . . . . . . . . . . . .14

Installation of Carbon Graphite Bushings . . . . . . . .14

Pressure Relief Valve Instructions . . . . . . . . . . 15

UNMOUNTED PUMP UNITS

PACKED MECH. SEAL

G125 G4125

Units are designated by the

unmounted pump model

numbers followed by a

letter indicating drive style.

V = V-belt

D = Direct Connected

R = Viking Speed Reducer

P = Commercial Speed

Reducer

H125 H4125

HL125 HL4125

AK125 AK4125

AL125 AL4125

K125 K4125

KK125 KK4125

L125 L4125

LQ125 LQ4125

LL125 LL4125

This manual deals only with Series 125 and 4125 Heavy

Duty Bracket Mounted Pumps. Refer to Figures 1 through

19 for general configuration and nomenclature used in this

manual. Pump specifications and recommendations are

listed in Catalog Section 141, Series 125 and 4125 Heavy

Duty Bracket Mounted Pumps.

FIGURE 3

Sizes K, KK and L

FIGURE 1

Sizes G, H and HL

FIGURE 4

Sizes LQ and LL

FIGURE 2

Sizes AK and AL

Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com

HEAVY-DUTY BRACKET MOUNTED PUMPS

SERIES 125 AND 4125

SIZES G-LL

Summary of content (16 pages)

PAGE 1
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com TECHNICAL SERVICE MANUAL HEAVY-DUTY BRACKET MOUNTED PUMPS SERIES 125 AND 4125 SIZES G-LL CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . .1 Safety Information . . . . . . . . . . . . . . . . . . . . 2 Special Information . . . . . . . . . . . . . . . . . . . .3 Maintenance . . . . . . . . . . . . . . .
PAGE 2
SAFETY INFORMATION AND INSTRUCTIONS IMPROPER INSTALLATION, OPERATION OR MAINTENANCE OF PUMP MAY CAUSE SERIOUS INJURY OR DEATH AND/OR RESULT IN DAMAGE TO PUMP AND/OR OTHER EQUIPMENT. VIKING’S WARRANTY DOES NOT COVER FAILURE DUE TO IMPROPER INSTALLATION, OPERATION OR MAINTENANCE. THIS INFORMATION MUST BE FULLY READ BEFORE BEGINNING INSTALLATION, OPERATION OR MAINTENANCE OF PUMP AND MUST BE KEPT WITH PUMP. PUMP MUST BE INSTALLED, OPERATED AND MAINTAINED ONLY BY SUITABLY TRAINED AND QUALIFIED PERSONS.
PAGE 3
SPECIAL INFORMATION DANGER ! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) Be sure: 1. That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections. 2. That the driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational so that it cannot be started while work is being done on pump. 3.
PAGE 4
PACKED PUMPS BRACKET BUSHING BALL BEARING IDLER CASING ROTOR PACKING GLAND HEAD PACKING RINGS LIP SEAL OUTER END CAP IDLER PIN VALVE BODY POPPET VALVE SPRING SHAFT LOCKNUT OUTER END CAP SPRING GUIDE INNER END CAP BONNET LIP SEAL INNER END CAP LOCKNUT BRACKET ADJUSTING SCREW HEAD GASKET PACKING RETAINING WASHER PIPE PLUG VALVE CAP BRACKET GASKET VALVE GASKET FIGURE 5 CUTAWAY VIEW OF G125 WITH CALLOUTS EXPLODED VIEW OF MODELS G125, H125, HL125, AK125, AL125, K125, KK125, L125, LQ125 A
PAGE 5
DISASSEMBLY DANGER ! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) Be sure: 1. That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections. 2. That the driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational so that it cannot be started while work is being done on pump. 6.
PAGE 6
3. 4. Place the packing retainer washer in the bottom of the packing chamber. Use packing suitable for the liquid being pumped. Lubricate the packing rings with oil, grease or graphite to aid assembly. A length of pipe will help to seat each packing ring. (Install packing, staggering the joints from one side of shaft to other.) Install the packing gland, capscrews and nuts.
PAGE 7
MECHANICAL SEAL PUMPS MECHANICAL SEAL INNER END CAP CASING ROTOR SHAFT LIP SEAL INNER END CAP IDLER BRACKET BUSHING OUTER END CAP IDLER PIN VALVE BODY POPPET LOCKNUT VALVE SPRING LOCKWASHER LIP SEAL OUTER END CAP BONNET GASKET BALL BEARING SPRING GUIDE BONNET SETSCREW PIPE PLUG LIPSEAL BRACKET CAP GASKET HEAD VALVE GASKET HEAD GASKET GREASE FITTING BRACKET GASKET ADJUSTING SCREW LOCKNUT VALVE CAP FIGURE 7 CUTAWAY VIEW OF KK4125 WITH CALLOUTS EXPLODED VIEW FOR MODELS G4125, H4125, HL
PAGE 8
DISASSEMBLY DANGER ! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) Be sure: 1. That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections. 5. Carefully remove the rotor and shaft to avoid damaging the bracket bushing. 6. Remove the rotary member of the seal from the shaft and the stationary seal seat from the bracket. 7. Loosen the setscrews.
PAGE 9
LIP SEAL FOR SEAL CHAMBER TAPERED INSTALLATION SLEEVE COAT SEAL SEAT AND SEAL HOUSING BORE WITH NON-DETERGENT SAE 30 WEIGHT OIL BEFORE ASSEMBLY. BRACKET BUSHING LIP SEAL FOR SEAL CHAMBER SHAFT BRACKET BUSHING BRACKET FIGURE 8 Prior to installing the rotating portion of the mechanical seal, prepare and organize the rotor shaft, head and idler assemblies and appropriate gaskets for quick assembly.
PAGE 10
9. Coat the rotor shaft with non-detergent SAE 30 weight oil. Start the end of the shaft in the bracket bushing and turn from right to left, slowly pushing until the ends of the rotor teeth are just below the face of the casing. DANGER ! Before starting pump, be sure all drive equipment guards are in place. Leave the rotor in this position. Withdrawal of the rotor and shaft may displace the carbon seal rotating face and result in damage to the seal. 10. Using a .010 to .
PAGE 11
5. Using a cardboard disc to protect the lapped face of the seal seat, press the seal seat assembly to the bottom of the seal housing bore using a piece of wood. An arbor press can also be used to install the seal seat. The seal seat must be started square and carefully pressed to the bottom of the seal housing bore. ROTOR HUB MECHANICAL SEAL ROTARY MEMBER SHAFT K size pumps require a 0.25 inch spacer between the seal and the rotor hub to properly position the seal on the shaft. 6.
PAGE 12
DISASSEMBLY 5. Remove the seal holder nuts, seal holder plate and the capscrews. 6. Seal holder cannot be removed until the shaft is removed. Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) Be sure: 7. Tap the shaft forward approximately 0.5 inch and remove the pair of half round rings under the inner spacer collar. 8. Carefully remove the rotor and shaft to avoid damaging the bracket bushing. 1.
PAGE 13
4. Using a .010 to .015 inch head gasket, install the head and idler assembly on the pump. Pump head and casing were marked before disassembly to ensure proper reassembly. If not, be sure the idler pin, which is offset in the pump head, is positioned toward and equal distance between the port connections to allow for proper flow of liquid through the pump. 11. Press the stationary seal seat in the bore until the back, unlapped face, is just inside the bore.
PAGE 14
THRUST BEARING ADJUSTMENT 1. Loosen the setscrews over the outer and inner end caps. Two for G, H and HL size pumps, four for all other sizes. 2. Turn the inner end cap clockwise, viewed from the shaft end, until it projects slightly from the bracket exposing approximately three threads. 3. Turn the outer end cap clockwise until the rotor is tight against the head and the rotor shaft cannot be turned. 4. Make a reference mark on the bracket end, opposite a notch on the outer end cap.
PAGE 15
PRESSURE RELIEF VALVE INSTRUCTIONS DANGER ! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) Be sure: 1. That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections. 2. That the driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational so that it cannot be started while work is being done on pump.
PAGE 16
TECHNICAL SERVICE MANUAL HEAVY-DUTY BRACKET MOUNTED PUMPS SERIES 125 AND 4125 SIZES G-LL SECTION TSM 141.1 PAGE 16 of 16 ISSUE E PRESSURE ADJUSTMENT If a new spring is installed or if the pressure setting of the pressure relief valve is to be changed from that which the factory has set, the following instructions must be carefully followed. 1. Carefully remove the valve cap which covers the adjusting screw.