Chevrolet Light Duty Truck 1973 Service Manual page 248

4 - 2 4 REAR SU S PEN SIO N AND DRIVELINE
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Fig. 46—Applying Pressure on the Correct Race
action is rapid and pressure can be applied continuously.
Special precaution should be taken when using the arbor
press to align the race squarely on the shaft, as the great
pressures which can be exerted by the press could easily
cause race cracking or severe scoring of the shaft, if the
race were started unevenly. Accessory equipment such as
drive plates, tubing or pipes which will carry the force
through the press fitted race, should be used whenever
necessary.
Drive blocks furnish one of the most
Drive Blocks.
convenient means of driving a bearing onto a shaft or
into a housing. They are simple to construct and are
especially useful where the operation is repeated time
after time. Drive blocks can be used for either outer
race, inner race or complete bearing assembly. They
must be so constructed, however, that the pressure travels
only through the press-fitted race, and that the race is
brought up snug against the shoulder or other means of
retention provided for it.
Pipes or tubes can be used to assemble
Pipe or Tubing.
Fig. 47—Apply Pressure Evenly
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Fig. 48—Bearing Installation Using Arbor Press
Fig. 49—Bearing Installation Using Drive Block
races or bearings in the same manner that they are used
to remove them. The same process can be used to drive
the outer race into the housing. Besides, pipe or tubing
can be used in conjunction with an arbor press as well as
with a hammer. The pressure should be distributed over
the end of the tube by means of a steel block or cap.
Points to Remember
1. Make sure that shaft seat and housing bore are
clean, smooth and of the correct diameter.
2. Do not remove bearings from package until ready
for assembling.
3. Lubricate the surfaces of the bearings and machine
part which are to be press fitted.
4. Start bearings on shaft with rounded corner radius
of race going first.
5. Direct the driving pressure directly through race to
be press fitted, making sure that pressure is directed
straight and square.
PRESS R A M
_ _ STEEL
BLOCK
PIPE O R
"'" 'T U B E
LIGHT DUTY TRUCK SERVICE MANUAL