Bobcat 741 - Page 323

CRANKSHAFT AND MAIN BEARINGS (Cont'd)
Checking (Cont'd)
Check the crankshaft main bearing journals [A]:
Standard
.. . ........ .. . ... 2. 244 inches (56,99 mm)
Out-of-Round and Taper . . . . .
0. 0004 inch (0,01 mm)
or
less
Oil Clearance
. . . 0. 0008-0 . 0028 inch (0,02-0 ,07 mm)
Checking Oil Clearance (Plastic Gauge)
Remove all the oil from the crankshaft bearing journals to
be checked.
Cut
plastic gauge to the width of the bearing [B).
Install the bearing cap. Tighten the bolts to 37-39 ft.-Ibs.
(50-53
Nm) torque.
DO NOT turn the crankshaft.
Remove the bearing cap. Measure the width of the
plastic
gauge[B).
If the clearance exceeds the limit, bearing must be
replaced or undersize used.
Installation
Install the upper bearings in the engine block.
Put oil on the crankshaft journal.
Install
the crankshaft.
Install the main bearing caps and tighten to specified
torque [C).
Starting at the center bearing cap and moving toward
each end of the crankshaft
[0].
Added Sept. 90
-70-45-
c
I-=r-............ 37-39 ft.-Ibs.
(50-53 Nm)
&-03345
741, 742, 743, 7430S Bobcat Loader
Service Manual