Chevrolet 1988 Light Duty Truck Repair Manual page 369

A. A rb o r Press
B. Press Tool
104. C am shaft Gear
105. T h ru s t Plate
108. C am shaft
104
108
Figure 29— Installing the Camshaft Gear
NOTICE: The th ru s t p la te m u s t be p o s itio n e d
so th a t the w o o d ru ff ke y (107) d oes n o t dam age
it d u rin g the re m o va l o p e ra tio n .
• Press the cam shaft (108) out of the cam shaft
gear.
2. Thrust plate (105).
3. Spacer (106).
*
A ssem b le (F ig u re 29)
• S upport the cam shaft on the back of the front
journal in an arbor press using press plate adapters.
• Lubricate the thrust plate with engine oil.
1. W oodruff key (107).
2. Spacer (106).
3. Thrust plate (105).
4. Cam shaft gear (104).
• Make sure that the tim ing mark is to the
outside.
• Press the cam shaft gear onto the cam shaft
until it bottoms on the spacer (106).
• Remove the cam shaft from the press.
$
M easu re (F ig u re 27)
C am shaft to thrust plate clearance using a feeler
g a g e . T he c o rre c t c le a rn c e is 0.0015-inch to
0.0050-inch.
CAMSHAFT BEARINGS
R em o ve or D isco nn ect (F ig u re 30)
Tool Required:
J 33049 Universal Cam shaft Bearing
Remover and Installer
1. Expansion plug.
• Drive out the plug from inside the block at the
rear cam shaft bearing.
2. Front and rear bearings (109) using J 33049.
• Drive the bearings towards the center of the
block.
3. Center bearing using J 33049.
• Drive the bearing towards the rear of the
engine.
2.5 LITER L4 ENGINE 6A1-17
F-02027
Figure 30— Removing or Installing Camshaft Bearings
+ 4 -
Install or C o n n ect (F ig u re 30)
Tool Required:
J 33049 Universal Cam shaft Bearing
Center bearing using J 33049.
• Install the bearing from the front of the engine.
• Make sure that the oil holes in the bearing are
aligned with the oil holes in the block.
2
Rear bearing (109) and expansion plug.
.
• Drive the bearing in from the rear of the
engine.
• Make sure that the oil holes in the bearing are
aligned with the oil holes in the block.
• Drive the expansion plug into the block from
the rear of the engine
Front bearing (109).
• D riv e th e b e a rin g
approxim ately 3.18 mm (Vs-inch) past the front
surface of the block. This uncovers the tim ing
gear oil nozzle hole.
C lean
• Old RTV sealant from the sealing flange.
I ? Inspect
Front cover for cracks, large dents, etc.
Sealing flange for straightness.
❖
D isassem b le (F ig u re 5)
Seal (101). Pry the seal out with a screwdriver.
A ssem b le (F ig u re 31)
Tool Required:
J 34995 Crankshaft Front Cover
Oil Seal Installer
New seal (101) using tool J 34995.
— S upport the inside of the front cover around
the seal bore area.
A. B e aring Tool
B. D river H andle
Remover and Installer
in to th e
FRONT COVER
B-05233
b lo c k , and