Revised Cam Gear Replacement Procedure for Fiero L4-151 25L Engines (1985)
Technical Service Bulletin # 88652
Date: 880601
Engine - Revised Cam Gear Replacement Procedure
Bulletin Number:
88-6-52
Reference Number:
826113R
Publish Date:
6/88
Subject:
SERVICE MANUAL UPDATE - REVISED CAM GEAR REPLACEMENT SERVICE PROCEDURE
Models 1982-88 6000, GRAND AM AND
Affected:
FIERO WITH 2.5L L4 ENGINES
SERVICE MANUAL UPDATE
THIS BULLETIN SUPERSEDES CURRENT AND PAST SERVICE MANUAL PROCEDURES. THIS BULLETIN ALSO SUPERSEDES THE
FOLLOWING SERVICE BULLETINS FOR THE FOLLOWING MODEL YEARS AND CARLINES.
Bulletin No. 86-6(Gasoline)-64
Dated 10/86
Bulletin No. 85-6(Gasoline)-39
Dated 6/85
The above bulletins should be discarded and replaced with this bulletin.
A set of revised service procedures has been developed for replacement of camshaft timing gears. The revised methods do not require the complete
removal of the engine from the vehicle.. Cam gear replacement is generally accomplished by partially lowering the engine/cradle assembly to gain access
to the cam gear.
This bulletin contains three separate and complete procedures for servicing cam gears on 6000, Grand Am, and Fiero models.
NOTICE:
SEE APPROPRIATE SERVICE MANUAL SECTION FOR FASTENER TORQUE SPECIFICATIONS.
6000 Model Service Procedure
Tools Required:
J28467-A
Engine Support Fixture
J24420-B
Cam Gear Removal Tool
J25033-B
Cam Gear Installation Tool
J34995
Crankshaft Front Cover Oil Seal Installer
J8001
Universal Dial Indicator W/Magnetic Base
Remove or Disconnect
1.
Negative battery cable.
2.
Drain coolant.
3.
Belt tensioner and belt, or drive belts, as applicable.
4.
Upper engine torque strut.
5.
Timing pointer plate (as applicable).
6.
Both forward hood bumpers.
7.
Install engine support fixture - J28467-A per Service Manual.
8.
Raise vehicle.
9.
Both front wheels.
10.
Drain engine oil (remove oil filter).
11.
Steering shaft pinch bolt at steering gear.
12.
Right front lower ball joint.
13.
Right front brakeline-to-body bracket.
14.
Right front wheelhouse engine splash shield.
15.
Flywheel/flexplate cover.
16.
Crankshaft pulley (have assistant hold flywheel).
17.
Frame (cradle) bolts and insulators (4).
18.
Lower vehicle.
19.
Timing gear cover bolts (8).
20.
Lower the passenger side of the cradle/powertrain assembly 4 inches with support fixture (may require lowering of driver's side).
21.
Raise vehicle.
22.
Timing gear cover - do not distort.
Clean
-
Timing gear cover and engine sealing surfaces.
