8 INSPECTION AND MAINTENANCE
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
157
Pub. No. 291Y1-40720 Revision: 5
• Prepare a plastic tube (5 mm [0.20
in.] in diameter, approx. 1 m [39.37
in.] long) and a band.
4 Prepare a container for receiving
drained coolant and place it under
the coolant drain cock on the water
pump.
Fig. 8-83 Container to Receive Coolant
• The customer is required to prepare
the container.
5 Slightly open the coolant drain cock
(2) on the water pump.
Fig. 8-84 Coolant Drain Cock on Water Pump
6 Slightly open the coolant filler port
to release pressure.
• If the radiator cap has a pressure release
lever, move the lever upward to release
pressure.
Fig. 8-85 Radiator Cap - Pressure Release
(With Lever)
• If the radiator cap does not have a pressure
release lever, cover the radiator cap with a
waste cloth, and loosen the radiator cap a
half-turn to release pressure.
Fig. 8-86 Radiator Cap - Pressure Release
(Without Lever)
7 Open the coolant drain cock (1) on
the engine body.
ï‚®Coolant is drained.
Fig. 8-87 Coolant Drain Cock on Engine Body
(2)
(1)
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