GMC S Series 1994, Repair Manual

Page: 352 / 919

91
Measure
• Rod bearing clearance, refer to “ Main and
Rod Bearings” in this section for measurement
procedure.
• If the readings are within limits, select a
suitable set of inserts. If the readings are
unsatisfactory and available inserts will not
correct the clearance, the crankshaft must be
replaced.
8. Lubricate bearing surfaces and crankshaft journal
surfaces with Engine Oil Supplement GM
P/N 1052367 or equivalent.
NOTICE:
Refer to “ Notice” on page 6A2-1.
9. Bearing cap.
Important
Carefully tap the bearing cap into place. Do
not pull the cap into place with the cap bolts or
nuts.
• Bearing cap nuts to 52 N*m (38 lbs. ft.).
• Loosen cap nuts one full turn and tighten to
specification, refer to “ Specifications” in this
section.
Inspect
€
Pry the connecting rod back and forth with a
suitable tool and check for binding. If
necessary, loosen and re-tighten the bearing
cap.
Measure
• Connecting rod side clearance, refer to
Figure 52 and “ Engine Specifications” in this
section.
OIL PUMP DRIVE INSTALLATION
Figure 17
|-»<-| Install or Connect
1. Oil pump drive by twisting.
NOTICE:
Refer to “ Notice” on page 6A2-1.
2. Oil pump drive bolt.
Q
Tighten
• Bolt to 25 N-m (18 lbs. ft.).
OIL PUMP INSTALLATION
Figure 53
-*«- Install or Connect
1. Heat retainer in hot water prior to assembling
extension shaft.
2. Extension to oil pump.
1 PICKUP TUBE AND SCREEN
2 PUMP COVER
3 DRIVE GEAR AND SHAFT
4 IDLER GEAR
5 PUMP BODY
6 RETAINER
7 SHAFT
8 BOLTS
9 RETAINING PIN
10 PRESSURE REGULATOR SPRING
11 PESSURE REGULATOR VALVE
12 GASKET
M C 0 0 2 1 -6 A 2 —L -E D 5
Figure 53 - Oil Pump
[T | Important
Be sure retainer
installation.
does not crack upon
NOTICE:
Refer to “ Notice” on page 6A2-1.
Pump to rear bearing cap and bolt.
Tighten
• Pump bolt to 43 N*m (32 lbs. ft.).
OIL PAN INSTALLATION
Figure 54
E Install or Connect
1. Place a 2 mm diameter bead of GM P/N 1052914
RTV sealer or equivalent, on the oil pan to block
side sealing flanges.
2. Apply GM P/N 1052914 RTV sealer or
equivalent to oil pan surface which fits to engine
front cover.