TM 5-2420-230-24-2
Coolant Thermostat Housing (008-014)
B3.9 and B5.9 Series Engines
Page 8-14
Section 8 - Cooling System - Group 08
13 mm
Install the drive belt. Refer to Procedure 008-002.
NOTE: After the belt tensioner has been raised to remove/
install the belt, check the torque of the tensioner capscrew.
Torque Value: 43 Nm
[32 ft-lb]
CAUTION
Always vent the engine and aftercooler during filling to
remove air from the coolant system, or overheating will
result.
Fill the cooling system. Operate the engine, and check for
leaks.
Coolant Thermostat Housing
(008-014)
General Information
Refer to Procedure 008-013 for coolant thermostat and
coolant housing.
Cooling System (008-018)
Initial Check (008-018-001)
WARNING
Do not remove the pressure cap from a hot engine. Wait
until the coolant temperature is below 50C [122F]
before removing the pressure cap. Heated coolant spray
or steam can cause personal injury.
NOTE: Never use a sealing additive to stop leaks in the
coolant system. This can result in coolant system plugging
and inadequate coolant flow, causing the engine to over-
heat.
The coolant level must be checked daily.
L-1070