Refrigeration Service Operations
138
2. Inspect both mating surfaces for burrs,
oxidation and other surface imperfections.
Dress with crocus cloth if necessary and
re-clean as required.
3.
Using no lubricants
, set the coupling on the
crankshaft and align the keyways using the
Keyway Tool (P/N 204-972). Insert the
tapered end of the tool into the keyway and
gently move the coupling on the shaft while
pressing the tool into the keyway. This will
align the keyway in the crankshaft with the
keyway in the coupler.
Figure 221: Keyway Tool P/N 204-972
4. Remove the Keyway Tool and check the fit of
the key (P/N 55-9024). It should fit into the
keyway with a light press fit requiring only a
minimum of light tapping. If the key does not
fit properly, remove the coupler and inspect
the keyways and key for burrs or other
problems. Recheck the fit as shown above.
5. When the key fits properly, remove the
coupling and key from the shaft.
AGA1059
1
3
4
8
5
6
7
2
1.
Coupling
5.
10 mm Allen Tool (for large shaft compressor)
2.
Long Spacers (supplied with tool)
6.
5/16 Allen Tool (for small shaft compressors)
3.
Short Spacers (supplied with tool)
7.
Coupling Removal Tool (P/N 204-991)
4.
Socket Head Bolts (supplied with tool)
8.
Engine Mounting Flange
Figure 220: Compressor Coupling Removal Tool
AGA333
CAUTION: If you are assembling a used
coupler or crankshaft and the tool does
not fit easily there is a problem with one of
the keyways! Do not remove the coupler
and place the key in the crankshaft
keyway and then drop the coupler on. If
the tool does not fit, the key will not fit,
and it will hold the taper in the coupler off
the taper on the shaft. Check both keyways
for burrs or corrosion. A key can be
coated with fine lapping compound and
used as a lapping tool to clean the
keyways.
