Pontiac Fiero 1988 Service Manual page 312

2.5L ENGINE 6A1-11
W / B A L A N C E
SHAFT
DRIVE GEAR
H20001-6A1
Fig. 1 7 Crankshaft and Bearings
J34924-A Seal Installer.
1. Rear main seal to block.
• Press evenly into place with J34924-A.
m Lubricate outside of seal to aid assembly.
2. Flywheel - 75 N-m (55 lb. ft.) - automatic; 93
N°m (69 Ib.ft.) - manual.
3. Pressure plate and disc - if equipped with manual
transmission.
4. Transmission Assembly - See Section 7.
Inspect
• For oil leaks.
CONNECTING ROD A N D PISTON
Remove or Disconnect
Cylinder head.
Clean
[SI
2.
3.
4.
5.
6.
• Ridge or deposits from upper end of
cylinder bore. Protect piston with cloth.
Raise car.
Oil pan.
Force balancer, when necessary.
Connecting rod bearing cap.
Piston and connecting rod.
• Check identification of piston and
connecting rod.
Refer to Section 6A General Engine Mechanical
for servicing of connecting rods, pistons, rings
and bearings.
7. Lower car.
1
2
3.
4
5
6
7
8
9
10.
Install or Connect
Guide Set on connecting rod bolts.
Rod and piston assembly into cylinder.
• Notches in top of piston to front of engine.
Raise car.
Connecting rod to crankshaft - remove guide set.
Connecting rod bearing cap.
Rod nuts - 44 N-m (32 lb. ft).
Force balancer, if removed.
Oil pan.
Lower car.
Cylinder head assembly.
If
Inspect
m For proper completion of repair.
CRANKSHAFT
4-+| Remove or Disconnect
Engine.
Engine oil.
Mount engine on suitable stand.
Spark plugs.
Crankshaft pulley and hub assembly.
Oil pan and force balancer.
Timing gear cover.
Crankshaft timing gear.
Connecting rod bearing caps with bearings and
identify each for reinstallation.
Push connecting rod and piston assemblies away
from crankshaft.
Main bearing caps with bearings and identify for
reinstallation.
Crankshaft.
Refer to Section 6A General Engine Mechanical
for servicing of crankshaft.
1.
2.
3.
4.
5.
6.
7.
10.
11.
12.
Install or Connect
With new upper bearings installed, position
crankshaft in block.
Main bearing caps (with new lower bearings), but
do not tighten cap bolts. Oil bearings prior to
assembly.
Pull connecting rods (with new upper bearings
installed) and pistons into place.
Rod bearing caps (with new bearings), but do not
tighten nuts. Oil bearings prior to assembly.
With rubber mallet, hit both ends of crankshaft
to center thrust bearing rearward first - then
forward last.
Tighten main bearing caps 95 N-m (70 lb. ft.)
then check crank end play. It should be between
.0015* and .0085".
Tighten connecting rod bearing caps - 44 N-m
(32 lb. ft.).
1.
3.
4.
5.