Camshaft and Timing Gear Train
02
050
21
RG,RG34710,196 –19–25OCT00–1/7
Replace Camshaft Bushings
RG8333 –UN–09DEC97
Removing Camshaft Bushings
A—JDG968-1 Bushing Remover
B—313793 Forcing Screw
C—JDG968-3 Guide
Camshaft bushings MUST BE replaced with cylinder head
removed from engine.
IMPORTANT: Use only hand tools for camshaft
bushing removal and installation. DO
NOT use pneumatic equipment for
bushing replacement.
Remove Camshaft Bushings
1. Remove camshaft. (See REMOVE AND INSTALL
CAMSHAFT, earlier in this group.)
2. Remove spring pins from camshaft towers 3 and 5
(bushing locations 2 and 3).
3. No. 1 Bushing:
Install JDG968-1 Bushing Remover (A) in front side of
No. 1 camshaft tower.
4. Lubricate 313793 Forcing Screw (B) and inset through
remover with double nut and washer towards front of
engine.
5. Install JDG968-3 Guide (C) in rear side of No. 2 tower
with forcing screw through driver. Secure assembly
with nut and washer.
6. Remove bushing from bore using a 1/2-in. drive ratchet
wrench with deep-well socket on double nut and a
combination wrench to hold single nut. Protect cylinder
head with a shop towel on wrench handle.
Remove remaining bushings using the same procedure
as above and by positioning tool set as follows:
7. No. 2 Bushing:
Install JDG968-1 Bushing Remover in rear of No. 3
tower and JDG968-3 Guide in front of No. 2 tower.
8. Install 313793 Forcing Screw with double nut toward
front of engine. Use a 152.4 mm (6.0 in.) extension
with ratchet to reach double nut.
CTM100 (06APR04)
02-050-21
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=261
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