Front Cover Installation; Torsional Damper Installation; Piston And Connecting Rod Installation; Connecting Rod Bearing Selection - GMC T Series 1994 Repair Manual

FRONT COVER INSTALLATION

Install or Connect
1. Front cover gasket to the front cover.
• Use gasket cement to hold the gasket in place.
2. Front cover to the engine.
NOTICE: Refer to "Notice" on page 6A4-1.
3. Front cover bolts.
Tighten
• Front cover bolts to 11 N-m (1C0 lbs. in.).
TORSIONAL DAMPER
INSTALLATION
Install or Connect (Figure 42)
Tool Required:
J 39046 Harmonic Balancer Remover and Installer
1. Crankshaft key (if removed).
NOTICE: The inertial weight section o f the
torsional damper is assem bled to the hub
with rubber type material. The correct instal­
lation procedures (with the proper tool) m ust
be followed or m ovem ent o f the inertial
w eight section o f the hub will d estro y the
tuning of the torsional damper.
2. Stud (item A, figure 42) to the crankshaft. Thread
stud fully into the tapped hole in the crankshaft.
3. Torsional damper over the end of the stud. Align
the keyway in the torsional damper shaft with the
crankshaft key.
4. Bearing, washer, and nut.
A. Turn the nut to pull the vibration damper into
place.
B. Remove the tool.
Figure 42— Installing Torsional Damper
NOTICE: Refer to "Notice" on page 6A4-1.
5. Torsional damper bolt and washer.
Tighten
• Bolt to 95 N-m (70 lbs. ft.).
PISTON AND CONNECTING
ROD INSTALLATION

CONNECTING ROD BEARING SELECTION

Connecting rod bearings are of the precision insert
type and do not use shims for adjustment. DO NOT
FILE RODS OR ROD CAPS. If clearances are exces­
sive, install a new bearing. Service bearings are avail­
able in standard size and 0.0014 mm undersize for use
with new and used standard size crankshafts.
Install or Connect (Figures 43 through 46)
Tools Required:
J 5239 Connecting Rod Bolt Guide Set
J 8037 Ring Compressor
J 36660 Torque/Angle Meter
• Lubricate the cylinder walls lightly with engine oil.
• Make sure the piston is installed in the matching
cylinder.
1
. Connecting rod bearings.
A. Make sure the bearing inserts are the proper
size.
B. Install the bearing inserts in the connecting rod
and connecting rod cap.
C. Lubricate the bearings with engine oil.
2. Piston and connecting rod into the proper bore.
A. With the connecting rod cap removed, install
J 5239 onto the connecting rod bolts (figure
45).
B. Locate the piston ring end gaps (figure 43).
Lubricate the piston and rings with engine oil.
C. Without disturbing the ring end gap location,
install J 8037 over the piston (figure 44).