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6A6-24
1977 PONTIAC SERVICE M A N U A L
Fig.
6A6-54
Checking Ring In Groove
Installation
NOTE: Cylinder bores must be clean before piston
installation. This may be accomplished with a hot water
and detergent wash or with a light honing as necessary.
After cleaning, the bores should be swabbed several
times with light engine oil and a clean dry cloth.
1. Lubricate connecting rod bearings and install in rods
and rod caps.
2. Lightly coat pistons, rings and cylinder walls with
light engine oil.
3. With bearing caps removed, install Tool J 5239 (3/8")
or J 6305 (11/32") on connecting rod bolts.
CAUTION: Be sure ring gaps are properly
positioned as previously outlined.
4. Install each connecting rod and piston assembly in its
respective bore. Install with connecting rod bearing tang slots
on side opposite camshaft (Fig. 6A6-57).
Tool J 8037 to compress the rings (Fig. 6A6-58). Guide
the connecting rod into place on the crankshaft journal with
Tool J 5239 (3/8") or J 6305 (1 1/32"). Use a hammer handle
and light blows to install the piston into the bore. Hold the
ring compressor firmly against the cylinder block until all
piston rings have entered the cylinder bore.
5. Remove Tool J 5239 or J 6305.
6. Install the bearing caps and torque nuts to
specifications.
NOTE: If bearing replacement is required refer to
"Connecting Rod Bearings".
NOTE: Be sure to install new pistons in the same
cylinders for which they were fitted and used pistons in
the same cylinder from which they were removed. Each
connecting rod and bearing cap should be marked,
beginning at the front of the engine. On V8 engines 1,
3, 5 and 7 in the left bank and 2, 4, 6 and 8 in the right
bank. The numbers on the connecting rod and bearing
cap must be on the same side when installed in the
cylinder bore. If a connecting rod is ever moved from
one block or cylinder to another, new bearings should
be fitted and the connecting rod should be numbered
to correspond with the new cylinder number.
ENGINE ASSEMBLY
Removal
1. Remove hood.
2. Disconnect battery cables at battery.
3. Remove air cleaner.
4. Drain radiator and block.
5. Disconnect radiator and heater hoses and remove
radiator and fan shroud.
6. Disconnect wires:
a. Starter solenoid
b. Delcotron
c. Temperature switch
d. Oil pressure switch
e. Coil
7. Disconnect:
a. Accelerator linkage at inlet manifold
b. Fuel line from tank, at fuel pump
c. Hoses at fuel vapor storage canister (if applicable)
d. Vacuum line to power brake unit at manifold, if so
equipped.
8. Remove power steering pump and lay aside, if so
equipped.
9. Raise vehicle on hoist.
10. Drain crankcase.
11. Disconnect exhaust pipe at manifold and, if so
equipped, converter bracket at transmission rear mount.
12. Remove starter.
13. Remove flywheel splash shield or converter housing
cover as applicable.
14. On vehicles with automatic transmissions, remove
converter to flywheel attaching bolts.
15. Remove mount "through" bolts.
16. Remove bell housing bolts.
17. Lower vehicle on hoist.
18. Raise transmission using floor jack.
19. Attach engine lifting devices, raise engine.
20. Remove motor mount to engine brackets.
21. Remove engine assembly.
Installation
1. Position engine assembly in vehicle.
2. Attach motor mount to engine brackets and lower
engine in place.
3. Remove engine lifting device.
4. Remove transmission floor jack.
5. Raise vehicle on hoist.
6.
Install
mount
"through"
bolts.
Torque to
specifications.
7. Install bell housing bolts. Torque to specifications.
8. On vehicles with automatic transmissions, install
converter
to
flywheel
attaching
bolts.
Torque
to
specifications.
9. Install flywheel splash shield to converter housing
cover as applicable. Torque attaching bolts to specifications.
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