Oil Pan Installation; Oil Pump Driveshaft Installation; Cylinder Head Installation - GMC 1989 Light Duty Truck Repair Manual

2. Oil pump bolts (84) and nut (78).
$
Tighten
Bolts to 25 N m (18 ft. lbs.)
Nut to 42 N-m (31 ft. lbs.)

OIL PAN INSTALLATION

4 4 -
Install or C onnect (Figures 5 and 51)
• Apply RTV sealant to the oil pan flange and block.
Refer to figure 51.
1. Oil pan (76).
2. Bolts (75).
A. 7.5 m m ('Yus-lnch) W id e x
2.5 m m ( V 32 -Inch) T h ic k
B. 4 m m (''/ 32 -Inch) W id e x
2.5 m m ( V.^-lnch) T h ic k
C. 3 mm (Vn-lnch) Bead In
Areas S h ow n
D. F ront O f E ngine
76. O il Pan
119. B lo ck
126. Rear M ain B earing Cap
Figure 5 1 — A pplying R TV to th e Oil Pan and Block
2.5 LITER L4 ENGINE 6A1-27
Q T ighten
• Oil pan bolts to 10.0 N m (90 in. lbs.).
OIL PUMP DRIVESHAFT
INSTALLATION
Install or C onnect (Figures 5 and 52)
1. Shaft and gear assembly (115 and 114). Turn the
shaft until it indexes the oil pump shaft pilot properly
in the oil pump body.
2. Bearing (113).
3. Plate (118). Apply RTV to the plate as shown in
figure 52.
4. Bolts (117).
Tighten
• Bolts to 14 N-m (120 in. lbs.).

CYLINDER HEAD INSTALLATION

Install or C onnect (Figures 3 and 53)
+ +
• Make sure the block and cylinder head sealing
surfaces are clean.
1. Head gasket to the block. Install over the dowel
pins.
2. Cylinder head. Carefully guide the head into place
over the dowel pins. This may require an assistant.
3. Cylinder head bolts. Refer to figure 53.
F-05718