VALVE INSTALLATION.

TM 10-3930-623-34

NOTE

6-33.

FLYWHEEL AND FLYWHEEL HOUSING

INSTALLATION. Install flywheel housing (47, figure

After seat is properly narrowed,

4-22) and flywheel as follows:

dress with original seat angle stones

to remove burrs or feather edges

1. Assemble flywheel housing to cylinder block (62)

6-31. VALVE INSTALLATION.

with ring dowels (48), screws (49 and 50) and

lockwashers (51). Mating surfaces must be clean to

1. Replace tappets (8, figure 4-23) into cylinder

reduce flywheel housing runout. Torque to 50-55 foot-

block in order from which they were removed.

pounds.

2. Set valve springs (5) and retainers (6) in valve

2. Assemble dial indicator to end of crankshaft to

chamber.

check flywheel housing face and bore runout. Maximum

3. Coat valve stems with light coating of OE-30

indicator reading is 0.008 inch for both face and bore.

engine oil. Insert intake valves (1) and exhaust valves

Rotate crankshaft to check.

(2) in position from which they were removed.

4. Use a valve spring compressor tool to lift springs

NOTE

and retainers. Assemble retainer locks (7) to valve stem

If runout exceeds 0.008 inch, remove

and release spring compressor.

housing and check for dirt or burrs

between housing and cylinder block.

NOTE

Reassemble.

Excessive runout

Rotate crankshaft until camshaft lob

affects life of transmission bearings.

is at its lowest position under tappet

and valve being assembled.

3. Install flywheel on crankshaft. Secure with nuts

(9) and lock washers (10, figure 4-28). Torque nuts to

5. With camshaft lob and tappet in lowest position,

35 to 40 foot-pounds.

initially set valve clearance.

Hold tappet with one

NOTE

wrench while adjusting self-locking adjustment screw

Flywheel screws (8) are pressed into

with second wrench. Adjust intake valve for 0.014 inch

crankshaft (37) prior to installing

clearance and exhaust valve for 0.017 inch.

crankshaft.

NOTE

4. Assemble dial indicator to flywheel hous ing to

Final valve adjustment is made with a

measure flywheel runout. Check torque convertor bolt

hot static engine.

Adjust exhaust

surface and counterbore (inner side wall). Maximum

valve clearance to 0.020 inch

runout must not exceed 0.008 inch. (see figure 6-6).

clearance and adjust intake valve

clearance to 0.012 inch.

6-34. OIL PUMP ASSEMBLY.

6. Loosely assemble valve cover (15, figure 4-22)

and gasket (60) to prevent entrance of foreign matter.

1. Press oil shaft bushing (20, figure 4-26) into

pump body (19) if inspection indicates replacement.

6-32. FLYWHEEL REASSEMBLY. Replace ring gear

2. Assemble drive gear (4) to shaft (18) with pin

(11, figure 4-28) if inspection showed need for removal.

(5).

Replace gear as follows:

NOTE

Replacement gear (4) is supplied with

1. Heat ring gear in suitable oven, to insure uniform

only one pin hole. Align gear with

heating, to a maximum temperature of 400 deg F (bluish

shaft hole and drill through second

color).

side of gear.

CAUTION

Heat ring gear evenly at all points

3. Assemble driven gear (13) to drive shaft with

and do not allow Heat ring gear

woodruff key (15) and idler gear (16) and shaft (17) to

evenly at all points and do not allow

pump body.

the temperature to exceed 400 deg F.

4. Check clearance between pump body and

If ring gear is heated unevenly, it may

gears. Clearance to be 0.001 to 0.003 inch.

crack. If temperature exceeds 400

5. With straight edge across pump cover bolt

deg F, the temper in the ring gear

surface, check for 0.0015 to 0.006 inch clearance

might be destroyed.

between gear sides and straight edge.

2. Assemble ring gear to flywheel (7) with beveled

6. Assemble cover (11) and gasket (12) to body

side of teeth to engine side of flywheel. Make sure ring

with two screws (8) in idler gear end.

gear seat is clean and ring gear is fully seated before

gear chills.

6-7