Internal Mechanism In Fixture; Measurements And Table Of Available Service Shoes And Thrust Races; Measuring For Proper Shoe; Checking Compressor Mainshaft End Play - Pontiac Grand Prix Service Manual

CUSTOM AIR CONDITIONING 1A-23
Fig. 1A-32 Internal Mechanism in Fixture
NOTE: Apply full hand force at end of mainshaft a few
times before reading clearance. This will help squeeze the
oil out from between mating parts.
c. An alternate method of selecting a proper race is to
use J 9661 gauge set selecting a suitable feeler gauge
leaf until the result is a 4 to 8 oz. pull on the scale
between the rear thrust bearing and upper (or outer
rear) thrust race (Fig. 1A-36). If the pull is just less
than 4
ozs.,
add
.0005"
to the thickness of the feeler
stock used to measure the clearance. If the pull on the
scale reads just over 8 ozs., then subtract .0005" from
the thickness of the feeler stock. Select a race
accordingly.
Fig. 1A-34 Measurements and Table of Available
Service Shoes and Thrust Races
d. Select from stock a numbered thrust race that
corresponds to dial indicator reading (Fig. 1A-37).
NOTE: Thrust races are made of steel and ground to a
B e d thickness. A total of fourteen thrust races are
available for field service. They will have increments of
-000.5" thickness to provide the required clearance.
The thrust races will be identified on the part by their
thickness, and the number on thrust race will corre-
spond to the last three digits of the piece part number.
If an improper selection of thrust races or shoes is
made and -the tolerance is GREATER than the
maximum clearance, noisy operation of the compressor
will iesult. If the tolerance is LESS than the minimum
Fig. 1A-33 Measuring for Proper Shoe Fig. 1A-35 Checking Compressor Mainshaft End Play