Form No. 3353-890 Rev B High Torque Trencher Head and High Speed Trencher Head for Compact Utility Loaders Model No. 22470—Serial No. 250000001 and Up Model No. 22471—Serial No. 250000001 and Up Register at www.Toro.com.
This manual identifies potential hazards and has safety messages identified by the safety alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. There may be buried power, gas, and/or telephone lines in the work area. Shock or explosion may occur if you dig into them. Have the property or work area marked for buried lines and do not dig in marked areas.
Safety When going up or down hill, the machine could overturn if the heavy end is toward the downhill side. Someone may be pinned or seriously injured by the machine if it overturns. Improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and those in the traction unit Operator’s Manual. Always pay attention to the safety alert symbol, which means Caution, Warning, or Danger—personal safety instruction.
Stability Ratings To determine the degree of slope you can traverse with the trencher installed on a traction unit, find the stability rating for the hill position you want to travel in the appropriate table below, then find the degree of slope for the same rating and hill position in the Stability Data section of the traction unit Operator’s Manual. Hydraulic couplers, hydraulic lines/valves, and hydraulic fluid may be hot and can burn you if you touch them.
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 99-9952 1. Cutting hazard, chain and auger—stay away from moving parts and keep bystanders away from the machine. 2. Warning—stop the engine and remove the key before preforming and maintenance or repairs. 3. Explosion and/or electric shock hazard—do not dig in areas with buried gas or power lines. 99-9953 1.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure 1 2 3 4 Description Use Qty. Boom assembly Chain assembly (sold separately) Install the boom and digging chain. Safety bar 1 Install the safety bar. No parts required – Install the spoils auger. No parts required – Check the bearing case lube level.
Important: To avoid bending the chain links, place blocks under and between the links when hammering the clevis pin through. 9. Secure the clevis pin with the cotter pin supplied with the chain. 10. Loop the digging chain over the auger drive shaft and onto the drive sprocket, ensuring that the digging teeth point forward on the upper span. 11. Set the upper span of the chain into place on the trencher boom, then wrap the chain around the roller at the end of the boom. 12.
3 2 1 5 1 G008940 Figure 6 4 1. Bearing case fill hole plug G008936 Figure 5 1. 2. 3. 4. 5. 4. Remove the plug from the bearing case fill hole (Figure 6). Auger Connect these holes for a 4 inch (10 cm) chain Connect these holes for a 6 inch (15 cm) chain Connect these holes for a 8 inch (20 cm) chain Connect these holes for a 12 inch (30 cm) chain 5. Look in the hole, the level should be up to the bottom of the hole; if not add gear lube until it comes out of the hole. 6.
Product Overview Operation Specifications Refer to your traction unit Operator’s Manual for more information on installing and removing attachments on your traction unit. Note: Specifications and design are subject to change without notice. Width Length Height Weight Maximum trench depth, 2 ft (61 cm) boom Maximum trench depth, 3 ft (91 cm) boom Important: Always use the traction unit to lift and move the attachment.
Transporting the Trencher on a Trailer Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Fluid injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result. Place the trencher on a trailer or truck capable of carrying it. Securely tie the trencher to the trailer or truck using tie straps appropriate for the weight of the trencher and for highway use.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Before each use or daily Maintenance Procedure • Grease the trencher. • Inspect the digging teeth and chain for excessive wear. Every 25 hours • Check the gear lube level. • Adjust the digging chain tension. • Inspect the boom for wear. Every 200 hours • Change the gear lube. • Grease the trencher. • Check the gear lube level. • Paint chipped surfaces.
Adjusting Digging Chain Tension 2. Stop the engine and remove the key. 3. Clean the area around the bearing case fill hole plug (Figure 10). Service Interval: Every 25 hours With the trencher parallel to the ground, ensure that there are 1-1/2 to 2-1/2 inches (3.8 to 6.3 cm) between the bottom of the boom and the top of the bottom chain span. If not, adjust the chain using the following procedure: Important: Do not over tighten the chain. Excess chain tension may damage drive components. 1.
Replacing the Digging Teeth Important: The arrow on the sprocket face should be visible from the right side of the trencher and should point in a clockwise direction; if not, turn the sprocket around. Service Interval: Before each use or daily Due to the high amount of wear placed on the digging teeth, you will need to replace them periodically. 12. Thread the 6 bolts into the sprocket finger tight (Fig. 8).
Storage 1. Before long term storage, brush the dirt from the attachment. 2. Check the condition of the digging chain. Adjust and lubricate the chain. Replace any worn or damaged teeth. 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 contamination of the hydraulic system. 5. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 6.
Troubleshooting Problem The chain does not turn. Possible Cause 1. A hydraulic coupler is not completely connected. 1. Check and tighten all couplers. 2. A hydraulic coupler is damaged. 3. There is an obstruction in a hydraulic hose 4. An auxiliary valve on the traction unit is not opening. 5. The boom end bearing failed. 6. The digging chain is too tight. 7. There is sand buildup in tooth root of the drive sprocket. 2. Check/replace couplers 3. Find and remove the obstruction. 8.
Toro Compact Utility Equipment Warranty CUE Products A One-Year 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 Compact Utility Equipment (“Product”) to be free from defects in materials or workmanship.
