Jeep UNIVERSAL CJ-2A - Page 47

D
L4-134 ENGINE
counterweight. Temporarily install the oil pan and
then check clearance of the front counterweight
and the oil pan front end. Should there be inter-
ference, bend the pan forward to obtain clearance.
D-75. Check Crankshaft End-Play
End play of the crankshaft is set by the running
clearance between the crankshaft thrust washer
and the front face of the front main bearing. The
standard end play is .004" to .006" [0,102 a 0,152
mm.] which is controlled by .002" [0,051 nim.]
shims placed between the thrust washer and the
shoulder on the crankshaft. Check the end play
with a dial indicator as shown in Fig. 57. If clear-
ance
is incorrect, adjustment is made by adding or
removing shims.
Install the thrust washer with the beveled inner
edge toward the front bearing.
FIG. 57-GAUGING CRANKSHAFT END PLAY
D-76. Install Crankshaft Timing Gear
Install the woodruff key in the longer of the two
keyways on the front end of the crankshaft. Install
the crankshaft timing gear or sprocket on the front
end of the crankshaft with the timing mark facing
out, away from the cylinder block. Align the
keyway in the gear with the woodruff key and then
drive or press the gear or sprocket onto the crank-
shaft firmly against the thrust washer.
D-77. Install Crankshaft Rear Bearing Seal
On early L4-134 engines the crankshaft rear bear-
ing is .sealed by a wick packing. This packing is
installed 'in a groove machined in the crankcase
and the rear main bearing cap.
To install a packing in the main bearing cap,
insert the packing in the groove with the fingers.
Then with a round piece of wood or steel, roll the
packing into the groove as shown in Fig. 59. When
rolling the packing, ·start ·at one end and roll the
packing to the center of the groove. Then start
from the other end and again roll toward the
center. This procedure will ensure that the packing
is firmly pressed into the bottom of the groove.
The small portion of the packing which protrudes
cbove the surface of the cap at each end should be
cut off flush with the cap.
46
To install a new wick packing in the crankcase, the
engine must be removed and the crankshaft taken
out.
FIG. 58-STEEL-BACKED LIP SEAL INSTALLED
On later L4-134 engines a steel-backed lip seal is
used in production. See Fig. 58. This new seal can be
used in place of the wl.ck seal and can be installed
in the crankcase without removing the crankshaft.
Apply a film of light cup grease when installing seal
to aid in installation and to provide initial lubri-
cation.
FIG. 59-REAR MAIN BEARING PACKING