Pontiac FIREBIRD 1972 Service Manual page 556

6-44 1972 PONTIAC SERVICE MANUAL
1MPORTANT:ALIGNTIMINGMARKSON
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TIMING GEARS BYROTA TING CRANK-
SHAFT IF Ne'ESSA R K
12. Remove the lines by sliding them from the retaining
clip at the cylinder head water outlet.
13. Remove generator mounting bolts, generator, fan
belt and generator mounting bracket. 10. Install timing gear cover using new seal and gaskets.
1 1. Install oil pump assembly and oil pan using new rear
seal in rear main bearing cap and new front seal on
timing gear cover. Press front seal tips into holes in
timing gear cover.
14. Remove engine insulators from engine.
15. Remove fan and water pump pulley.
16. Remove water pump.
12. Coat front cover oil seal contact area of balancer with
oil and drive balancer into position using balancer
installer tool 5-22 197.
17. Remove harmonic balancer with tool 5-6978.
18. Remove timing gear cover.
13. Install fan pulley and fan.
19. Remove crankshaft timing gear with tool 5-6978 and
remove crankshaft key.
14. Install spark plugs.
15. Remove engine from stand. 20. Remove rocker arm cover.
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16. Install engine in vehicle. 21. Loosen and rotate rocker arms.
22. Remove push rods and valve lifters and store in a
stand 'and suitable box in numerical order.
FITTED BLOCK ASSEMBLY
REPLACE
23. Remove cylinder head, intake and exhaust manifolds
as an assembly.
Fitted block assembly contains pistons, rings, pins, cam-
shaft bearings and oil filter by-pass valve.
24. Remove two camshaft thrust plate screws through
holes in the camshaft gear and remove camshaft
through the front of the block.
25. Remove oil pan.
DISASSEMBLE
26. Remove oil pump and dipstick tube.
1. Remove engine from vehicle.
27. Remove crankshaft.
2. Remove starter from engine.
28. Remove all connecting rod and piston assemblies and
identify each connecting rod according to cylinder
from which it was removed.
3. Install engine on suitable stand.
4. Remove ground strap and dipstick.
29. Remove connecting rods from pistons.
5. Disconnect spark plug wires and primary wire at coil.
30. Remove old block from stand and mount new block
on stand.
6. Remove distributor hold-down clamp and vacuum
advance line and remove distributor and base gasket.
31. Remove new piston and pin assemblies from new
block and identify each according to cylinder from
which it was removed.
7. Remove spark plugs and coil.
8. Disconnect fuel line at fuel pump and remove fuel
Pump.
9. Remove push rod cover, retaining screws, their gas-
kets, covers and cover gaskets.
10. Remove oil pressure sending switch, oil filter and oil
filter connector.
This completes disassembly for partial engine replace-
ment. Use new gaskets and pay special attention to torque
requirements.
11. Disconnect fuel and vacuum lines at carburetor.
1. Assemble old connecting rods to new piston and pin