Piper SARATOGA PA-32-301 Maintenance Manual page 140

413
PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
3. Run the engine for a 15 minute period at 1200 RPM.
- WARNING -
If the air conditioner is to be operated on the groundfor servicing,
the test area should be clean andfree of any loose objects lying on the
ramp. Only the service valves located on the evaporator assembly
should be used for testing.
4. Shut dowun engine and recheck both belt tensions. If compressor belt tension falls as low as 60 pounds.
retension to 80 pounds. If alternator belt tension falls below 50 pounds. retension to 70 pounds. The plastic
type alternator belt should be between 35-40 lbs.
5. This tension check should be made at every 100 hours or annual inspection. whichever occurs first.
6. Check all idler and bracket bolts for safety and replace engine cowling.
MAGNETIC CLUTCH.
MAGNETIC CLUTCH REMOVAL. (Refer to Figure 21-13.)
1.
Rero\e the self-locking capscrew and washer from the compressor shaft.
2. Insert a 5 8-11 UNC-2B bolt in the threaded portion of the hub and tighten. The pressure exerted by
the bolt on the end of the compressor crankshaft will force off the rotor pulley assembly without damage to the
clutch or compressor.
-
CAUTION-
Do not use a wheelpuller on the outer flange of the pulley. This can
damage the pulley grooves or clutch bearings.
3. Remove the four bolts securing the field assembly against the compressor bosses and remove the
bolts. washers. and field assembly.
1 CAPSCREW
2 ROTOR PULLEY ASS Y
3 CAPSCREWS AND LOCK WASHERS
4 FIELD ASS Y
5 COMPRESSOR
Figure 21-13. Magnetic Clutch
21-58-08
Page 21-34
Revised: August 11. 1983
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