RT45 Operator’s Manual Service - 171
500 Hour
Test Coolant Freeze Protection Level
With engine cool, test coolant freeze protection
level using a hydrometer or refractometer.
Recommended freeze protection level is -34°F
(-37°C). Adjust as needed.
If colder temperatures are expected, consult your
Ditch witch dealer or coolant supplier.
Use pre-dilluted coolant to maintain proper freeze
protection.
Plow
Change Plow Vibrator Oil
Change plow vibrator oil every 500 hours.
To change:
1. Open fill (1) to vent vibrator.
2. Drain oil at drain plug (3).
3. Replace plug and move plow vibrator to horizontal position.
4. Add MPL at fill (1) until oil is halfway up sight glass (2).
IMPORTANT: See page 146 for information
on approved coolants.
273-423
Hot parts may
cause burns. Do not touch until cool.
To help avoid injury: Do not drain oil from
plow vibrator when hot. Let vibrator cool before
removing drain plug.
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