Form No. 3389-753 Rev A Centerline Trencher RT600 Traction Unit Model No. Model No. Model No. Model No. Model No. Register at www.Toro.com. Original Instructions (EN) 25431—Serial No. 313000001 and Up 25431—Serial No. 314000001 and Up 25431—Serial No. 315000001 and Up 25431E—Serial No. 315000001 and Up 25431E—Serial No.
WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. 1 Introduction This attachment is designed to dig trenches in soil to bury cabling and piping for various applications. It is not intended to cut rock, wood, or any other material other than soil. Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage.
Contents Safety Safety ........................................................................... 3 Safety and Instructional Decals ................................. 4 Setup ............................................................................ 6 1 Installing the Trencher Attachment.......................... 7 2 Preparing the Hydraulic Motor................................ 8 3 Installing the Hydraulic Hoses ...............................10 4 Installing the Sprocket ................................
WARNING CAUTION Lightning can cause severe injury or death. Hydraulic fittings, hydraulic lines/valves, and hydraulic fluid may be hot and can burn you if you touch them. If lightning is seen or thunder is heard in the area, do not operate the machine; seek shelter. • Wear gloves when maintaining hydraulic components. CAUTION • Allow the traction unit and trencher to cool before touching hydraulic components. Hydraulic fluid escaping under pressure can penetrate skin and cause injury.
125–6670 1. Cutting/dismemberment hazard, trencher—keep bystanders away from the trencher; keep away from moving parts; keep all guards and safeties in place. 125–6694 1. Tie-down point 125-6671 1. Explosion hazard; electric shock hazard—call local utilities before digging. 125-6693 1. Trencher oil 3. Lubricate the auger every 10 to 50 operating hours. 2. Gear-box oil 4. Read the Operator’s Manual for maintenance information.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 4 5 6 7 Description Use Qty.
1 Installing the Trencher Attachment Parts needed for this procedure: 1 Trencher attachment 4 Bolt (3/4 x 2-3/4 inch) 2 Bolt (3/4 x 2-1/2 inch) 11 Flat washer 8 Locknut Procedure 2 1. Raise the attachment off the floor as shown in Figure 4. 3 Important: Ensure that the lifting equipment has a lifting capacity of at least 405 kg (893 lb). Figure 5 1. Row 2 mounting holes 3. Row 4 mounting holes 2. Mounting plate 3.
5. Slip a washer onto each of 2 bolts (3/4 x 2-1/4 inch), and insert them from inside the trencher (Figure 7) through the remaining 2 holes in row 2. 9. Lower the trencher attachment until it is aligned with the mounting plate and the bolts fit in the upper slots. Note: Ensure that the washers on the bolts projecting through the trencher attachment are aligned to the forward side of the mounting plate as you lower the trencher attachment on the machine; refer to Figure 9. Figure 7 1.
2 Preparing the Hydraulic Motor Parts needed for this procedure: 1 Straight adapter fitting (5/8 inch) 1 Straight adapter fitting (3/4 inch) 1 Restrictor fitting 1 90° elbow (male/male) 1 Tee fitting 1 90° elbow (female/male) Figure 12 Procedure 1. Remove and discard the plastic plugs from the ports of the hydraulic motor as shown in Figure 11 and Figure 12. 1. Port (lower outboard) 4. Steel plug (removed from Port B)—insert it into the lower outboard port 2. Port (lower inboard) 5.
3 Installing the Hydraulic Hoses Parts needed for this procedure: 10 Hose (34-1/2 inch) 1 Hose (35-1/2 inch) 1 Hose (40 inch) 1 Bypass hose (16 inch) 2 Hose (23 inch) 2 Straight adapter fitting (3/8 inch) 1 Cable tie Procedure Figure 13 1. Port C 1 1. Install the bypass hose between the elbows (Figure 14). 6. Tee fitting 2. Straight adapter fitting (5/8 7. Restrictor fitting inch) Note: The bypass hose should form a “U” shape. 3. Straight adapter fitting (3/4 8.
3 7. Install the straight adapter fittings (3/8 inch) into the manifold (Figure 16). 8. Connect the 2 hoses (23 inch) to the manifold and to the hydraulic attachment panel fittings as shown in Figure 17. Figure 15 Hydraulic attachment panel 1. Cap (1-7/16 inch) 3. Cap (3/8 inch) 2. Cap (5/8 inch) 3. Remove the 2 caps (3/8 inch) from the right side of the hydraulic attachment panel (Figure 15). 4.
1 2 3 G023225 Figure 19 1. Bolt (4) 3. Locknut (4) 2. Sprocket segment 2. Start the machine and rotate the planetary gear by moving the trencher function control until the other half of the hub is accessible. 3. Repeat step 1 to install the other sprocket segment. G023281 4. Torque the bolts and locknuts to 160 to 190 N-m (120 to 140 ft-lb). Figure 18 1. Trencher-chain direction control 2.
Figure 20 1. Boom-mounting fitting on the trencher 3. Attach the lifting equipment to the restraint bar, and lift the boom (Figure 21). Important: Ensure that the lifting equipment has a vertical lift capacity of at least 313 kg (690 lb). Note: Ensure that the boom is level when you lift it. Figure 22 1. Mount-fitting hole (vertical) 5. Mount fitting hole (horizontal) 2. Bolt—(3/4 x 6-1/2 inch (2) 6. Washer—1 inch (2) 3. Washer—3/4 inch (2) 7. Bolt—1 x 2 inch (2) 4. Nut—3/4 inch (2) 6.
6 Aligning the Boom Parts needed for this procedure: 3 Shim Procedure 1. Check the alignment of the boom and record your measurements in the Alignment Worksheet below: • Left-offset boom: If the boom is aligned to the Figure 23 Left offset shown left of the sprocket center line, place a straight edge across the right face of the drive sprocket and measure the gap (Dimension A) between the straight edge and the end roller (Figure 23 and Figure 24). 1. Dimension A gap 3.
3. Use the shim table to determine the number of shims needed to align the boom within the 4.8 mm (0.1875 inch) maximum-offset gap. B. Apply a couple of drops of fast-bonding cyanoacrylate based adhesive to the shim(s); refer to Figure 26. Shim Table Number of Shims for Correction 22 cm (48 inch) Rock Boom Shim-correction Dimension 152 cm (60 inch) Rock Boom Shim-correction Dimension 1 7.1 mm (0.28 inch) 9.4 mm (0.37 inch) 2 14.5 mm (0.57 inch) 19.6 mm (0.77 inch) 3 21.8 mm (0.86 inch) 29.
Operation 7 Selecting the Proper Components for the Trencher Installing the Digging Chain Using the correct trencher components helps to increase the trenching speed and extending the life of the trencher. Contact an Authorized Toro Service Dealer for more information on parts for your trencher. Parts needed for this procedure: 1 Digging chain Procedure Selecting the Proper Chain Refer to Installing the Digging Chain (page 28). It is important to have the correct chain for the job.
1 Figure 28 1. H-plate chain G021912 Selecting the Proper Digging Teeth Figure 30 1. Shark tooth The most important component of the trencher are the digging teeth; the type of teeth that you select and the arrangement of teeth that you use greatly affects the digging efficiency and tooth wear.
Combinations of Boom, Chain, and Teeth for Various Soil Types and Conditions Soil Type Digging Teeth Type Chain Type Heavy Duty Anti-backflex H-Plate Cup Cutter Sand X Sandy Loam X Loose Shale X Topsoil X Caliche (Hard) X X Clay (Gumbo) X X Coral X Rock (Loose) Rock/Frost Mining Bit Shark Mixed X X X X X X X X X X X Asphalt X X X X Hard Clay X X X X X Frozen Soil X X X X X Note: You need a rock wheel to cut solid rock or concrete.
Positioning the Boom for Trenching For the best trenching performance and the smoothest machine operation, the boom must be in the full down trenching position (Figure 33). Having the boom in this position pulls the machine down for better traction. The ground drive simply pulls the trencher teeth into the face of the trench. g021973 Figure 33 When you raise the boom from the full down position, the trenching load pulls the machine rearward.
12. Decrease the digging chain speed and look at the tachometer. 4. Pull the attachment lift lever back to the Raise position until the boom is in the Transport position. 5. Move the throttle to the Idle position, stop the engine, and remove the key. Note: If the engine speed increases, push the utility-traction lever forward until the engine speed is the same that in step 11. Repeat this step to obtain the best trenching speed.
Maintenance 4. Connect the grease gun to the grease fitting for the support-housing bearing, and apply 3 pumps of grease to the fitting (Figure 35). Greasing the Trencher (Left Side) 5. Connect the grease gun to the grease fitting for the left auger bearing, and apply 3 pumps of grease to the fitting (Figure 35). Service Interval: Every 50 hours 6. Wipe up any excess grease. Every 100 hours—Grease the trencher lift cylinder. Every 100 hours—Grease the left auger bearing.
3. Connect the grease gun to the grease fitting for the idler wheel bearing, and apply 3 pumps of grease to the fitting (Figure 36). 2. Clean the area around the plug with a cleaning solvent. 3. Remove the plug (Figure 37). 4. Examine the condition of the O-rings on the plugs. 4. Install the dust cap (Figure 36). Note: Replace the O-ring if it is worn or damaged. 5. Check the oil by looking at the oil level through the port (Figure 37). 5.
Note: Allow the oil in the planetary drive to drain completely. 4. Move the boom to the horizontal position (Figure 40). 6. Examine the end of the plug (which is magnetic) for metal shavings. Note: If the end of the plug is covered with metal shavings, contact an Authorized Toro Service Dealer. 7. Examine the condition of the O-rings on the plugs. Note: Replace the O-ring if it is worn or damaged. 8. Install the plug in the port that is in the 6 o’clock position of the planetary drive (Figure 38). 9.
4. When you achieve a 51 to 76 mm (2 to 3 inch) gap between the chain and the wear strip, tighten the plug (Figure 41 and Figure 42). 5. Torque the 4 bolts (Figure 41) that secure the lock bars and the side plates to 190 to 215 N-m (140 to 159 ft-lb). 6. Perform the steps in Checking the Chain Tension (page 23). Increasing the Chain Tension WARNING If you remove the grease fitting from the boom before you release the pressure in the system, personal injury may result.
Checking the Trencher Chain Wear Strip and Wear Channel 2. Clean the area around the dust cap with a cleaning solvent (Figure 43). 3. Use a needle-nose pliers to rotate the dust cap counterclockwise and remove the cap from the grease fitting (Figure 43). Service Interval: Before each use or daily 1. Lift the chain at the wear strip at the top of the boom, and check the wear strip for signs of damage or excessive wear (Figure 45). 4.
9. Remove the wood blocks and lower the chain onto the boom. 10. Adjust the chain tension of the trencher; refer to Checking the Chain Tension (page 23). Replacing the Trencher Wear Channel 1. Loosen the trencher chain; refer to Decreasing the Chain Tension (page 23). 2. Remove the 10 bolts that secure the wear channel to the bottom left and bottom right sides of the boom (Figure 48). Figure 46 1. Blocks 4. Support 2. Digging chain 5. Wear channel 3. Wear strip 3.
Replacing the Digging Chain Removing the Digging Chain Preparing to Remove the Digging Chain 1. Start the machine and move the boom to the full up position. 2. Rotate the digging chain until the master pin is positioned at the top of the idler wheel of the boom (Figure 50). 3. Turn the machine off, and remove the key. 4. Remove the bleed plug from the chain tensioner of the boom; refer to Decreasing the Chain Tension (page 23).
Aligning the Digging Chain 5. When the digging chain has cleared the drive sprocket, move the trencher drive control to the Neutral position, turn the machine off, and remove the key (Figure 51). This procedure requires 2 people to align the digging chain to the machine. 6. Wrap the lifting strap around the digging chain at the idler wheel, and attach the strap to the lifting equipment (Figure 51). 1.
Storage 1. Before storing the machine, brush off the dirt from the attachment. 2. Check the condition of the digging chain. Adjust and lubricate the chain. Replace any worn or damaged parts. 3. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged or worn. 4. Ensure that all hydraulic couplers are connected together to prevent contaminating the hydraulic system. 5. Paint all scratched or bare metal surfaces with paint available from an Authorized Service Dealer. 6.
Troubleshooting Problem The chain does not turn. Possible Cause 1. A hydraulic fitting is not completely connected. 1. Check and tighten all fittings. 2. A hydraulic fitting is damaged. 3. There is an obstruction in a hydraulic hose. 4. An auxiliary valve on the machine is not opening. 5. The boom-end bearing has failed. 6. The digging chain is too tight. 7. There is sand buildup in the tooth root of the drive sprocket. 2. Replace the damaged fitting. 3. Find and remove the obstruction. 8.
Notes: 31
Underground Equipment The Toro Underground Warranty A Limited Warranty Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrant your Toro Underground Equipment (“Product”) to be free from defects in materials or workmanship. Where a warrantable condition exists, we will repair the Product at no cost to you including diagnostics, labor, and parts.
