Service Manual

Coolant Thermostat Housing ISB, ISBe and QSB (Common Rail [...]
Page 8-20 Section 8 - Cooling System - Group 08
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Preparatory Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
WARNING
Coolant is toxic. Keep away from children and pets. If
not reused, dispose of in accordance with local
environmental regulations.
WARNING
Do not remove the pressure cap from a hot engine.
Wait until the coolant temperature is below 50°C
[120°F] before removing the pressure cap. Heated
coolant spray or steam can cause personal injury.
CAUTION
Use caution when draining coolant so that it is not
spilled or drained into the bilge area. Do not pump the
coolant overboard. If the coolant is not reused, it
must be discarded in accordance with local
environmental regulations.
• Disconnect the batteries. Refer to Procedure 013-009
• Drain the engine coolant. Refer to Procedure 008-018
• Disconnect the keel cooler inlet and outlet connections
from the thermostat housing. Refer to the OEM
troubleshooting and repair manual.
• Disconnect the coolant vent line from the thermostat
housing. Refer to Procedure 008-017
• Disconnect the coolant inlet and outlet hoses from the
thermostat housing.
Remove
Remove the four thermostat housing mounting
capscrews.
Remove the two clamps and the thermostat housing.
Remove the two vibration isolators.