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6A3-22
1977 PONTIAC SERVICE MANUAL
Fig.
6A3-48
Installing Piston With Ring Compressor
Installed
ENGINE
REMOVAL A N D INSTALLATION
Removal
1. Remove hood; for easier installation, scribe marks
should be made at hood hinge and the hinge bracket.
2. Disconnect battery.
3. Drain coolant into a suitable container.
4. Remove air cleaner.
5. On cars equipped with air conditioning, disconnect
compressor ground wire from the mounting bracket. Remove
the electrical connector from the compressor clutch, remove
the compressor to mounting bracket attaching bolts, and
position the compressor out of the way.
6. Remove fan blade, pulleys, and belts.
7. Disconnect radiator and heater hoses from engine and
fasten them out of the way.
8. Remove fan shroud assembly.
9. Remove power steering pump to mounting bracket
bolts and position pump assembly out of the way.
10. Disconnect fuel pump hoses and plug hoses.
11. Disconnect battery ground cable from engine.
12. Disconnect the vacuum supply hose from carburetor
to the vacuum manifold. On cars so equipped, the vacuum
modulator, load leveler, and power brake vacuum hoses
should all be disconnected at the engine.
13. Disconnect throttle control cable at carburetor.
14. Disconnect alternator oil and coolant sending unit
switch connections at the engine and remove alternator.
15. Disconnect engine to body ground strap(s) at engine.
16. Raise car, disconnect starter cables, and disconnect
the cable shield from the engine (if so equipped).
17. Disconnect exhaust pipes from exhaust manifolds.
18. Remove lower flywheel or converter cover.
19. Remove flywheel to converter attaching bolts. Scribe
chalk mark on the flywheel and converter for reassembly
alignment
(this
is
not
necessary
on
manual
transmissions.Remove manual transmission with engine).
20. Remove transmission to engine attaching bolts on
automatic
transmissions.
On
manual
transmissions
disconnect propeller shaft, shift linkage, clutch equalizer
shaft and transmission mount.
21. Remove motor mount through bolts and cruise
control bracket if equipped.
22. Lower the car and support the transmission,
(automatic transmission only).
23. Attach a lifting device to the engine and raise the
engine enough so mounting through-bolts can be removed.
Make certain wiring harness, vacuum hoses, and other parts
are free and clear before lifting engine out of car.
24. Raise engine far enough to clear engine mounts, raise
transmission support accordingly and alternately until engine
can be disengaged from the transmission and removed.
Installation
1. Slowly lower engine into car until engine and
transmission are engaged and scribe marks are aligned.
2. It may be necessary to alternately raise and lower
transmission to fit motor mount through-bolts into position.
Install through-bolt nuts and torque to specifications.
3. Raise car and install transmission to engine attaching
bolts. Torque flywheel housing to engine bolts to
specifications. Install flywheel cover and torque bolts to
specifications.
4. Connect crossover pipe to exhaust manifold and
torque bolts to specifications.
5. Connect the starter cables to the starter and cable
shield to the engine block.
6. Lower the car and reconnect the body ground strap
to the engine, the coolant and oil switch sending unit
connectors, the throttle control cable, all vacuum and water
hoses, and the emission control line from the canister to the
air cleaner.
7. Connect the battery ground cable to the engine.
8. Connect the fuel lines to the fuel pump.
9. Reposition the power steering pump into the pump
brackets and secure.
10. Install fan shroud.
11. Install pulley, fan, and belts. Adjust belt tension as
specified in the Cooling System Section.
12. Reinstall air conditioning compressor to bracket.
13. Reinstall air cleaner.
14. Reinstall coolant and check to make certain proper
level is attained.
After complete engine assembly, start engine and
recheck for proper fill.
15. Reinstall hood, noting proper alignment of scribe
marks.
16. Connect battery.
AUTOMATIC TRANSMISSION
FLYWHEEL
REMOVAL A N D INSTALLATION
1. Remove transmission (refer to Transmission Group).
2. Remove six bolts attaching flywheel to crankshaft
flange.
3. Inspect flywheel; if cracked, replace flywheel.
4. Inspect crankshaft flange and flywheel for burrs.
Remove any burrs with a mill file.
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