INSTALL CRANKSHAFT AND GEAR 12-1202 & 1204

3208 INDUSTRAIL AND MARINE ENGINES

DISASSEMBLY AND ASSEMLBLY

CRANKSHAFT AND GEAR

INSTALL CRANKSHAFT AND

GEAR 12-1202 & 1204

Tools Needed

8S2328

Dial Test Indicator Group

5B1161

Wire

Install the key for the crankshaft gear on the

crankshaft.

Heat the gear for the crankshaft in oil to a

maximum temperature of 300 (149 ).

Install the gear on the crankshaft gear toward

the crankshaft pulley end of the crankshaft.

Thoroughly clean the area where the upper

halves of the main bearings fit. Install the

upper halves of the main bearings in the

cylinder block.

NOTE: The main bearing half with a hole in it is the

upper bearing.

Install the thrust bearing for the No. 4 main.

Put clean engine oil on the bearings and

journals of the crankshaft.

Install two of the bolts that hold the flywheel in

place in the end of the crankshaft. Fasten a

hoist and put the crankshaft in position in the

block. Make sure the timing mark on the

crankshaft gear is in alignment with the timing

mark on the camshaft gear.

Clean the main bearing caps and install the

lower halves of the main bearings in the caps.

CAUTION: When installing bearing caps, make sure the

number on the side of the cap is next to and respective

with the number on the engine block.

Check the bearing clearance with wire (B). Put

the caps in position and install the bolts.

Tighten the bolts in number order as follows:

Tighten bolts 1 through 10 to a torque of 30

3 lb. ft. (4.1 0.4 mkg).

Put a mark on each bolt head and bearing

cap. Tighten bolts I through 10 120 + 5

more.