POWER TRAIN MLC650 SERVICE/MAINTENANCE MANUAL
7-18
Published 09-09-16, Control # 229-09
Checking Coolant Level
For any service other than this periodic checking of the
coolant level, refer to the Cummins engine manual for
instructions.
When the engine is cold, check the coolant level by using the
sight glass (4) located on the top of the radiator. The coolant
must be visible in the glass. Add the correct type of coolant, if
needed, by performing the following procedure (see
Figure 7-12
).
1. Open the access hatch (2) in the engine enclosure (1).
2. Place a heavy cloth over the radiator reservoir cap (3),
then turn (do not depress) the cap counterclockwise until
the cap stops at the safety detent.
3. Wait for all pressure to escape.
4. When the hissing stops, depress the radiator reservoir
cap, and turn it counterclockwise to remove.
5. Add coolant to the radiator reservoir, stopping at times to
prevent overflow and to allow the coolant to flow into the
engine and all portions of the radiator.
6. When the coolant is visible in the sight glass, install the
radiator reservoir cap.
7. Run the engine until normal operating temperature is
reached.
8. When the engine is cool again, re-check the coolant
level as previously described. If needed, add coolant
until it is visible in the sight glass.
FIGURE 7-12
Item Description
1 Engine Enclosure
2 Access Hatch
3 Radiator Reservoir Cap
4 Sight Glass
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