9
Greasing and Lubrication
Service Interval/Specification
Check the gear lubrication oil level in the planetary gear
case before the first use,and then every 25 operating
hours. Check the level sooner if you notice leaking or
dampness around the gear case.
Grease lube type: SAE 90–140 API service GL–4 or GL–5
Refill capacity: 1 pint.
Checking Gear Lube
1. Position the traction unit and trencher on a level
surface and lower the trencher so that the trencher is
on the ground.
2. Stop the engine and remove the key.
3. Clean the area around the motor mounting flange.
4. Remove the hydraulic motor from the gear case.
Gear lube should run out.
5. Fill the gear case with enough gear lube to allow it to
run out when the motor is removed, then replace the
motor.
Lubricating the Digging Chain
Lubricate the digging chain after every 25 operating
hours.
Lubricant Type: Commercial chain lube.
1. Lower the trencher, stop the engine, and remove the
key.
2. Apply a commercial chain lube onto the upper and
lower chain spans.
3. Start the engine, raise the trencher slightly off the
ground using the loader arms, and slowly run the chain
forward to expose the un–lubed upper and lower chain
spans.
4. Lower the trencher, stop the engine, and remove the
key.
5. Apply lube to the newly exposed, un–lubed chain
spans.
6. Start the engine and slowly run the chain forward to
work the lubrication into the chain.
7. Stop the engine and remove the key.
Adjusting Digging Chain
Tension
Adjust the digging chain every 25 operating hours. With
the trencher parallel to the ground, ensure that there are 3
inches between the bottom of the boom and the top of the
bottom chain span. If there is more than 3 inches, adjust
the chain using the following procedure:
IMPORTANT: Do not over tighten the chain. Excess
chain tension may damage drive components.
1. Lower the trencher, stop the engine, and remove the
key.
2. Remove the wrench from the the side of the trencher.
Note: The butt of the wrench locks the adjustment nut.
3. Using the wrench, rotate the adjustment nut
counter-clockwise to extend the trencher boom to
tighten the chain.
4. Replace the wrench in the storage position to lock the
adjustment nut in place.
Replacing the Digging Teeth
Due to the high amount of wear placed on the digging
teeth, you will need to replace them periodically.
To replace a single tooth, remove the bolts securing the
tooth to remove it, then install a new tooth in the same
position. Torque the bolts securing the teeth to 27–33 ft.
lbs. (37–45 Nm).
Storage
1. Before long term storage, brush the dirt from the
attachment. Do not wash it, because washing will
cause rust.
2. Check the condition of the digging chain. Adjust and
lubricate the chain. Replace any worn or damaged
teeth.
3. Check gear case lubrication.
4. Check and tighten all bolts, nuts, and screws. Repair or
replace any part that is damaged or worn.
5. Ensure that all hydraulic couplers are connected
together to prevent contamination of the hydraulic
system.
6. Paint all scratched or bare metal surfaces. Paint is
available from your Authorized Service Dealer.
7. Store the trencher in a clean, dry garage or storage
area. Cover the trencher to protect it and keep it clean.
