300FWF996 Page 27
loosen the bearing race from the frame
bore.
DO NOT OVERHEAT AND
DAMAGE THE BEARING!!
In the
event the outer race can not be pulled
from the frame, remove the main
bearing snap ring from the inner groove
cut in the crankshaft. Using a hydraulic
jack and applying local heat, push the
entire bearing off the crankshaft from
inside the frame. Use extreme caution
not to damage the bearing during
removal.
10. The crankshaft is now free to move.
11. Install the lifting tool on the end of the
crankshaft with the bearing removed.
Gently lift the crankshaft to remove
pressure from the bearings. Slowly
thread the
crankshaft horizontally
through the outer bearing races. For
alternative disassembly, turn the frame
on its side with the removed bearing
crankshaft throw facing up. Using a
lifting eye and overhead hoist, lift the
crankshaft from the frame, threading
the bearings through the outer races.
12. Carefully place the crankshaft on a
clean piece of cardboard, clean ply-
wood, or clean rug.
Cover the
crankshaft and bearings with plastic to
prevent contamination of the bearings.
13. Remove
the
snap
ring
bearing
retainers from the frame, if the bearings
are to be replaced.
14. Remove the outer bearing races from
the frame using a bearing puller or
hydraulic jack.
15. If the crankshaft main bearings are to
be replaced, all bearing retainers must
be removed from the crankshaft. The
crankshaft should be held in a vertical
position, and the bearings rapidly
heated and allowed to drop off to the
floor.
Crankshaft Replacement
1. Determine which is no. 1 throw (90
from keyway.) Place crankshaft in a
vertical position, either in special fixture
or a bull-gear lying flat on the ground,
with the no. 1 throw down toward or
nearest the ground.
2. Heat the bearings uniformly, and install
the third bearing from the top first, then
the second bearing from the top, and
finally the outside bearing. (Use one
side only of bearing retainers as bottom
stops.)
3. Reverse position of crank, and repeat
for the remaining three bearings.
4. Install bearing retainers on both sides of
bearings.
5. Reversing step 11 from the previous
section, install the crankshaft, threading
the bearings through the outer races.
6. Install the outer shouldered races of the
two outer main bearings (one on either
end).
7. Reverse steps 8 through 1 to re-
assemble.
NOTICE
When replacing main bearings, the
two shouldered outer main bearing
races must NOT be installed in the
frame until the crankshaft has been
installed and all inner main bearing
races have passed through the non-
shouldered outer main bearing races.
WARNING
Do not drive against rollers or
bearing cage. Drive only against the
bearing race, as severe damage to
the bearings could occur.
HALLIBURTON EXHIBIT 1013, Page 33
