01-24
Basic Engine
01-24
REMOVAL AND INSTALLATION (Continued)
Crankshaft Front Oil Seal
Removal
1.
Loosen alternator and adjusting bracket bolts and
remove fan belt.
2.
Remove crankshaft pulley bolt and remove pulley by
hand.
3. Remove oil seal from front cover using special service
tool (21-096).
NOTE: Use short end of tool on this seal.
Installation
1.
Lubricate the sealing lip of the new seal with engine
oil and push new seal into front cover using tool
21-046, crankshaft pulley, bolt and washer.
2.
Remove special service tool and reinstall crankshaft
pulley. Torque bolt to specification.
3.
Install fan belt and adjust the tension of the belts to
specification using Tool T63L-8620-A. Tighten
alternator and adjusting bracket bolts.
Camshaft and/or Valve Lifters
Removal
1.
Remove the engine assembly and mount the engine
on a stand. Drain the crankcase.
2.
Disconnect the fuel line at the fuel pump.
3. Loosen the generator and governor adjustment bolts
and remove the belts.
4.
Remove the fan and water pump pulley.
5. Remove the oil and fuel pumps from the cylinder
block.
6. Disconnect the spark plug wires from the plugs.
7.
Remove the rocker arm cover attaching screws and
rocker cover. Clean all gasket material from rocker
arm cover and cylinder head.
8. Remove the rocker arm shaft support bolts evenly
and lift off the rocker arm shaft.
9. Lift the push rods from their locations in the cylinder
block, taking care to keep them in their correct order.
IO. Invert the engine on the stand and remove the oil pan
and gaskets.
11. Remove the crankshaft pulley, the front cover and oil
slinger.
12. Remove the timing chain tensioner assembly.
13. Remove the camshaft sprocket and timing chain.
14. With the engine inverted, remove the camshaft thrust
plate and remove the camshaft.
15. If necessary, remove the tappets from their locations
in the cylinder block and keep them in the correct
order.
Installation
1. Install a new front cover oil seal, using Tool 21-046.
2. install the tappets, if removed.
3.
Install the camshaft and fit the thrust plate in the
camshaft groove. Tighten the attaching bolts to
specification and bend up the locking tabs.
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