RT80Q Operator’s Manual Service - 161
50 Hour
Trencher
Check Trencher Gearbox Oil
Check oil at sight tube every 50 hours. Keep oil
level at horizontal line (shown) on housing. If
necessary, add MPL at fill plug.
Plow
Change Plow Vibrator Oil
Change plow vibrator oil after first 50 hours of
operation. Drain oil at drain plug (2). Replace
plug and move plow vibrator to horizontal
position. Add MPL at fill (1) until oil is halfway up
sight glass (2). Refill capacity is 4 qt (3.8 L).
Check Plow Lift Cylinder Pins and
Bumpers
Check plow lift cylinder pins and bumpers every
50 hours.
Replace as needed.
IMPORTANT: Do not drain oil from plow
vibrator when hot. Let plow vibrator cool
before removing drain plug.
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