Ditch Witch RT80 - Manual (Page 163)

Service - 162
RT80Q Operator’s Manual
500 Hour
Change Hydraulic Fluid and Filter
Change hydraulic fluid and filter every 500 hours.
Change hydraulic fluid and filter every 250 hours
if jobsite temperature exceeds 100°F (38°C) more
than 50% of the time.
To change:
1. Remove drain plug (1).
2. Drain fluid and replace plug.
3. Change filter (2).
4. Add THF at fill (3).
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.
IMPORTANT: See page 140 for information
on approved coolants.
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