Piper SARATOGA PA-32-301 Maintenance Manual page 136

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
CHECKING COMPRESSOR OIL.
The oil level should be checked any time the system is discharged. The following steps should be followed
to perform this check:
I. It will be necessary to discharge the system. (Refer to Discharging.)
2. Fabricate an oil dipstick. (Refer to Figure 21-11.)
3. Remove the oil plug. (A .375 inch plug in the top side of the compressor crankcase.)
4. Before inserting the dipstick. the crankshaft Woodruff key should be located in the up position. (The
front face of the compressor clutch is marked with a stamped "K" indicating the key position.) The oil level
should be measured from the lowest point in the crankcase. Use the long end of the dipstick. (See Figure 21-
I I.)
5. With the compressor in the installed position use Chart 2107 to determine the amount of oil in the
crankcase.
6. The compressor should never be operated with less than 6ounces of oil. When oil is added the level
should not go above 10 ounces. Piper refrigerant oil PMS-L2000 or equivalent 500 viscosity refrigerant oil
must be used.
7. Evacuate and charge system. (Per Evacuating the System and Charging the System.)
-
NOTE -
The 10 ounce oil level is required in compressors installed on new
systems. Some oil is distributed in the system during operation.
Replacement compressors should be charged with 10 ounces of oil.
-
CAUTION -
The oil plug should not be removed with pressure in the system.
CHART 2107. COMPRESSOR OIL CHARGE
Oil Charge Ounces
Dipstick Reading Inches
6
13 16"
8
1.00"
10
1-3 16"
16
1-15 16"
21-58-04
Page 21-30
Revised: August 11, 1983
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