GMC 1989 Light Duty Truck Repair Manual page 379

125
126
71. Crankshaft Rear Oil Seal
72. Crankshaft Rear Bearing
86. Crankshaft Bearings
88. Crankshaft
124. Main Bearing Cap
125. Bolt
126. Rear Main Bearing Cap
Figure 39— Crankshaft and Bearing Components
B. F ee ler Gage
88 .
C ra n ksh a ft
126. Rear M ain B earing C ap
Figure 4 0 — M easuring C rankshaft End Play
2.5 LITER L4 ENGINE 6A1-23
124
A.
B.
C.
D.
E.
F.
71.
Figure 41— Installing the Rear Crankshaft Oil Seal
bearing cap, foreign matter between the insert and
the block or the bearing cap, or a faulty insert could
cause a lack of clearance at the bearing.
CRANKSHAFT REAR OIL
F-01994
Install or C onnect (Figures 5 and 41)
Tool Required:
• Crankshaft rear oil seal using J 34924.
1. Lubricate the seal inside diameter with engine
2. Slide the seal over the mandrel of the tool,
3. Lub rica te the seal o utside d ia m e te r w ith
4. Position the tool with the seal in place against
5. Turn the T-handle of the tool until the collar
F-02028
6. Loosen the T-handle fully. Loosen the screws
B
A lig n m e n t H o le in C ra n k s h a ft
D u st Lip
D ow el Pin
C o lla r
M andrel
S cre w s
C ra n k s h a ft Rear O il Seal
SEAL INSTALLATION
J 34924-A Seal Installer
oil.
until the dust lip (back of seal), mates squarely
against the collar.
engine oil.
the cran ksha ft. A lign the dowel w ith the
alignm ent hole in the crankshaft. Tighten the
screws firmly.
seats firmly against the crankcase. This will
insure that the seal is seated properly.
and remove the tool.
F-02029