Oil Pump Installation - GMC 1990 Light Truck Repair Manual

6A1-26 2.5 LITER L4 ENGINE
89. Key
94. Bolt
95. Crankshaft
96. Bolt
97. Crankshaft
98. Bolt
99. Washer
100. Crankshaft
FINAL ASSEMBLY
-► +
Install or Connect (Figure 5)
Apply engine oil to the connecting rod bearing
inserts (55) and crankshaft journal.
1. Connecting rod cap (116) with the lower connecting
rod bearing insert (55).
2. Nuts (56).
Q Tighten
• Nuts (56) to 40 N-m (30 ft. lbs.).
Measure (Figure 50)
Connecting rod side clearance. Use a feeler gage
between the connecting rod and the crankshaft. The
co rre ct cleara nce
(0.006-0.022-inch).
ENGINE LEFT ENGINE FRONT
A. Oil Ring Rail Gaps
B. 2nd Compression Ring Gap
C. Notch In Piston
D. Oil Ring Spacer Gap
(Tang In Hole Or Slot With Arc)
E. Top Compression Ring Gap
Figure 48—Piston Ring Gap Location
Figure 47—Timing Gear Cover and Components
is 0.15-0.60 mm
ENGINE RIGHT
B-07895

OIL PUMP INSTALLATION

I+ + I Install or Connect (Figure 5)
1. Oil pump.
• Align the oil pump shaft with the tang on the
oil pump driveshaft.
• Position the oil pump over the oil pump
driveshaft lower bushing. No gasket is used.
The oil pump should slide easily into place.
Figure 49—Installing the Piston
F-01992