chevrolet truck Light Duty Truck 1994 Series, Руководство по ремонту

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C. if correct end play cannot be obtained, be cer­
tain that the correct size rear main bearing has
been installed. Production engines may have
rear main bearings that are 0.008 inch wider
across the thrust faces than standard.
Tighten
• Rear main bearing cap bolts to 106 N-m
(78 lbs. ft.).
Inspect
Crankshaft for binding. Try turning the crankshaft to
check for binding. If the crankshaft does not turn
freely, loosen the main bearing cap bolts, one pair
at a time, until the tight bearing is located. Burrs on
the 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.
C RANKSHAFT REAR OIL SEAL
RETAINER INSTALLATION
XJjJf Clean
• Gasket surfaces on the block and seal retainer.
Install or Connect (Figure 35)
1. New gasket (54) to the block.
• It is not necessary to use sealant to hold the
gasket in place.
2
. Seal retainer (52).
NOTICE: Refer to “Notice
"
on page 6A4-1.
3. Screws (50) and nuts (51).
Tighten
• Screws and nuts to 15 N-m (135 lbs. in.).
CRANKSHAFT REAR OIL
SEAL INSTALLATION
Install or Connect (Figure 36)
Tool Required:
J 35621 Rear Main Seal Installer
• Crankshaft rear oil seal.
A. Lubricate the inner and outer diameter of the
seal with engine oil.
B. Install the seal on J 35621.
C. Position J 35621 against the crankshaft. Thread
the attaching screws into the tapped holes in
the crankshaft.
D. Tighten the screws securely with a screwdriver.
This will ensure that the seal is installed
squarely over the crankshaft.
E. Turn the handle until it bottoms.
F. Remove J 35621.
CAM SHAFT INSTALLATION
Install or Connect (Figures 37 and 38)
• Coat the camshaft lobes and journals with a high
quality engine oil supplement (GM Engine Oil Sup­
plement or equivalent).
•A p p ly Engine Oil Supplement (GM P/N 1052367),
or equivalent to all the teeth on the distributor drive
gear.
1
. Two or three 5/16-18 bolts 100-125 mm (4-5
inches) long into the camshaft threaded holes. Use
these bolts to handle the camshaft.
2. Camshaft to the engine (figure 38). Handle the
camshaft carefully to prevent damage to the cam­
shaft bearings.
NOTICE: Refer to “Notice” on page 6A4-1.
3. Camshaft retainer and retainer bolts.
&
Tighten
Bolts to 14 N-m (120 lbs. in.)