Cooling System
02
070
RG,RG34710,224 –19–17SEP02–5/5
To install fixed fan drive/camshaft gear access cover
assembly, see INSTALL TIMING GEAR COVER in Group
040.
5
RG,RG34710,225 –19–30SEP97–1/2
Inspect and Check Belt Tensioner Spring
Tension
RG8728 –UN–10DEC97
Marking Lower Belt Tensioner
RG8729 –UN–10DEC97
Testing Lower Tensioner
A—Mark on Swing Arm
B—Mark on Tensioner Base
Checking Lower Tensioner Spring Tension
A belt tension gauge will not give an accurate measure of
the belt tension when automatic spring tensioner is used.
Measure tensioner spring tension using a torque wrench
and procedure outlined below:
1. Release tension on belt using a long-handle 3/4-in.
breaker bar in tension arm. Remove belt from pulleys.
2. Release tension on tension arm and remove breaker
bar.
3. Put a mark (A) on swing arm of tensioner as shown.
4. Measure 25 mm (1.0 in.) from first mark (A) and put a
second mark (B) on tensioner mounting base.
5. Rotate the swing arm using a torque wrench until
marks (A and B) are aligned.
6. Record torque wrench measurement and compare with
specification below. Replace tensioner assembly as
required.
Specification
Belt Tensioner Lower Spring—
Tension 81—99 N•m (60—73 lb-ft).............................................................
Continued on next page
CTM100 (06APR04)
02-070-5
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=289
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