User guide

JT25 Operator’s Manual Service - 185

2000 Hour

CMW

2000 Hour

Drilling Unit

Change Engine Coolant

Drain cooling system at drain (1) every two years

or 2000 hours. Add approved coolant according to

instructions below. Refill capacity is 23 qt (21.8 L).

To fill:

1. Add coolant at radiator fill (2) at a rate of 3 gpm (11.4 L/min) or less until full.

2. Run engine with thermostat open (>195°F/90°C engine temperature) for several minutes.

3. Stop engine and let it cool.

4. Maintain coolant level at halfway point on sight glass (3).

Location Task Notes

DRILLING

UNIT

Change engine coolant DEAC

Change fluid pump oil NDO

NOTICE:

• The use of non-approved coolant may lead

to engine damage or premature engine

failure and will void engine warranty.

• See “Approved Coolant” on page 166 for

list of approved coolants.

• Use only distilled water for mixing coolants.

Do not use tap water.

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