Cooling System
02
070
12
RG,RG34710,233 –19–24SEP02–1/1
Install Thermostats
RG8242B –UN–05DEC97
Install Thermostats
RG8239B –UN–05DEC97
Thermostat Cover Installed
A—Wiggle Wire
B—Gasket
C—M10 x 35 Cap Screw
IMPORTANT: Top thermostat has a vent notch with
wiggle wire (A) for air bleeding. Bottom
thermostat has a blocking poppet that
opens passage to radiator when coolant
warms.
1. Clean all material from thermostat cover and housing
mounting surfaces.
2. Install smaller (non-blocking) thermostat in top position
with vent (wiggle wire) at 12 o’clock position. Install
larger blocking thermostat in bottom position.
3. Install thermostat cover using a new gasket or seal (B).
4. If equipped, install M10 x 35 cap screw (C) securing
thermostat cover-to-housing and tighten to
specifications.
Specification
Thermostat Cover-to-Housing
M10 x 35 Cap Screw—Torque 35 N•m (26 lb-ft).......................................
5. Install and tighten thermostat cover/housing
assembly-to-block cap screws to specifications.
Specification
Thermostat Cover/Housing
Assembly-to-Block Cap Screws—
Torque 50 N•m (37 lb-ft).............................................................................
CTM100 (06APR04)
02-070-12
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=296
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