GMC T Series 1994 Repair Manual page 559

2. Oil pump drive to the engine. Index the drive or
pump with the camshaft gear and oil pump drive
shaft. Make sure the drive or pump seats fully.
N O T IC E : R e f e r to "N o t i c e
3. Clamp and bolt.
Tighten
• Bolt to 42 N-m (31 lbs. ft.).
4. Speed sensor wire.
A. Forward
1. Engine Speed Sensor
2. Clamp
3. Bolt
4. Gasket
Figure 88— Oil Pump Drive Installed
C. Rear Surface of Seal Must be Flush
with Rear Surface of Engine Block and
Rear Main Bearing Cap.
6
Engine Block
.
75.
Rear Main Bearing Cap
79. Rear Oil Seal
83.
Crankshaft
"
o n p a g e 6 A 7 -1 .
ENGINE ACCESSORY
INSTALLATION
Install the engine accessories as directed in the prop­
er Truck Service Manual. Connect all vacuum hoses
and electrical equipment the same way as removed.
REAR CRANKSHAFT O IL
SEAL INSTALLATION
+<- Install or Connect (Figure 88)
Tool Required:
J 39084 Rear Crankshaft Seal Installer
Important
• Coat the crankshaft surface with engine oil, and
lightly coat the lip of the new oil seal with engine
oil or grease before installing the new oil seal. Do
not scratch or nick the sealing edge of the oil seal.
1. The oil seal (79), with the spring cavity towards the
engine, onto the crankshaft.
2. Using J 39084 installation tool, drive the seal in
until the tool bottoms against the block and rear
main bearing cap.
J 39084
7 5
VIEW A
V2126