Ditch Witch RT Line - Manual (Page 87)

Service - 86
RT12/RT16/RT20/RT24 Operator’s Manual
10 Hour Service
CMW
Lube Wheel Tracks
Lube wheel tracks, if equipped, at zerk with MPG
every 10 hours.
Check Digging Chain Tension
Check digging chain tension every 10 hours and
adjust as needed. With boom horizontal, measure
distance A from bottom of boom to chain. When
properly tensioned, distance A should be 1.5-2.0”
(38-51 mm).
Adjustment Screw:
1. Loosen four clamp bolts (2) so that boom
slides freely.
2. Loosen jam nut on adjustment screw (1).
3. To tighten digging chain, turn adjustment screw clockwise. To loosen digging chain, turn
counterclockwise.
4. When proper tension is reached, tighten jam nut.
5. Torque clamp bolts to 75 ft•lb (102 N•m).
Grease Cylinder:
NOTICE: Do not overtighten chain.
Overtightening will cause chain stretch, loss
of machine performance, and possible
premature chain failure.
Fluid pressure could pierce skin and cause injury or death. Stay away.
NOTICE: Service digging boom grease cylinder only while standing on opposite side of
boom. Wear gloves and safety glasses and cover fitting with cloth when relieving pressure
in cylinder.