Bobcat 741 - Page 223

CAMSHAFT AND VALVE LIFTERS (Cont'd)
Removal (Cont'd)
Remove the push rods from the cylinder block and keep
them
in the correct order.
Turn the complete engine over on the stand and remove
the oil pan and the gaskets.
Remove the crankshaft sheave. The timing cover and the
oil thrower.
Remove the timing chain tightener assembly.
Remove the camshaft sprocket and the timing chain.
Remove the camshaft thrust plate and remove the
camshaft [A).
Remove the tappets from the cylinder block and keep
them in the correct order.
Installation
Install a new timing cover oil seal. (See Page 78-27.)
Install the tappets.
Install the camshaft and install the thrust plate in the
camshaft groove. Tighten the fastening assembly bolts to
specification and bend the locking tabs.
Check the camshaft end play.
Put the timing chain on both sprockets. (Be sure marks
on the sprockets are
in alignment.) Install the sprockets
on the crankshaft and the camshaft then tighten the bolts
to specification and bend the locking tabs.
Find the tightener arm on the pivot pin and install the
timing chain tightener.
Install the oil thrower on the crankshaft.
Put the gasket on the timing cover with an oil sealer at the
end. Make alignment of the front cover and tighten the
bolts evenly to specification.
Put a new gasket on the block flange using an oil resistant
sealer compound at each end. Put the end seals
(chamfered ends) into the groove, again using an oil
resistant sealer at the ends and install the oil pan. Tighten
the oil pan bolts 6-8 ft.-Ibs. (8-10 Nm) torque [B). First
tighten according to alphabetical order (A-B-C etc.) then
tighten according to numerical order
(1-2-3).
Install the dipstick.
Install the crankshaft sheave, making alignment of the
slot with the crankshaft key. Tighten the sheave fastening
bolt to specification.
Revised Oct. 97
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PHl2177
741, 742, 743, 74305 Bobcat Loader
Service Manual