Piper PA-32R-301T SARATOGA S, Maintenance Manual

Page: 173 / 956

COOLING (cont.)
O. Component Service (cont.)
(4) Checking Compressor Oil
Compressor oil level should be checked any time the system is discharged. Compressor must be
in installed position.
(a) Discharge system. (Refer to Discharging System).
(b) Fabricate an oil dipstick. (Refer to Figure 10.)
— CAUTION —
The oil plug should not be removed with pressure in the sys-
tem.
(c) Remove 0.375 inch oil plug in top side of compressor crankcase.
(d) Place Woodruff key in the up position before inserting dipstick into crankshaft . (Front face
of compressor clutch is marked with a stamped “K” indicating key location.)
(e) Use long end of dipstick to measure oil level from lowest point in crankcase.(See Figure 10.)
(f) Use Chart 5 to determine the amount of oil in the crankcase.
— CAUTION—
A 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.
(f) Do not operate compressor with less than 6 ounces of oil. When adding oil level must not go
above 10 ounces. Piper refrigerant oil PMS-L2000 or equivalent 500 viscosity refrigerant oil
must be used.
(g) Evacuate and charge system. (Refer to Evacuating the System and Charging the System.)
Compressor and Fabricated Oil Stick
Figure 10
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
21-50-00
Page 21-32
Reissued: July 1, 1993
1I15
TORQUE
16-23 FT. LBS
4 PLCS
THIS END FOR
HORIZONTAL
MOUNT
NOTE: 12 NOTCHES 1/8 INCH APART
STARTING AT EACH END
THIS END FOR
VERTICAL MOUNT
OIL CHECK PLUG
(TYPICAL TWO SIDES
1.50
1.50R
1.7 5
1 .50
1 0 8 °
4.6 8