THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 30
Jun 1/03
2D18
21-50-00
CAUTION: DO NOT FORCE BELT INTO PULLEY SHEAVE. IF NECESSARY, REMOVE
IDLER ASSEMBLY.
(c) Place drive belt over clutch pulley and adjust alignment of pulleys and belt as described in
Drive Belt Service, below.
(d) Connect discharge and suction lines to service valves on evaporator unit.
(e) Evacuate the system per paragraph 3.C or 3.D.
(f) Charge the system per paragraph 3.C or 3.D.
(g) Install right front baffle.
(h) Install engine cowling.
(4) Checking Compressor Oil Level
Whenever a system component has been replaced or there is an obvious leak, use the
following procedure to check the compressor oil level (after making necessary repairs):
(a) Run compressor for 10 minutes at engine idle rpm.
(b) Recover all refrigerant from the system. Be careful not to lose oil.
(c) Determine the compressor mounting angle by positioning the angle gauge (Sanden P/N
32448) across the flat surfaces of the two front mounting ears.
(d) Center the bubble and read the mounting angle to the closest degree.
NOTE: From the factory, the mounting angle is essentially zero (0), but this procedure
may of use if the airplane is being serviced on a slope or uneven service.
(e) Remove the oil filler plug.
(f) Look through the oil filler plug hole and rotate the clutch front plate to position the internal
parts as shown in Figure 10. Center the parts as they are moving to the rear of the
compressor (discharge stroke). (Refer to Figure 12.)
NOTE: This step is necessary to clear the dipstick of internal parts and to allow its
insertion to full depth.
(g) Insert the dipstick to its stop position (refer to Figure 11). The stop is the angle near the
top of the dipstick.
1 The point of the angle must be to the left if the mounting angle is to the right.
2
The bottom surface of the angle must be flush with the surface of the oil filler hole.
(h) Remove the dipstick and count the increments of oil.
(i) Use Chart 7 to determine the correct oil level for the mounting angle of the compressor.
(j) If the increments read on the dipstick do not match the table, add or subtract oil (i.e. -
Retro-fix, PAG-21941, P/N 923-384) to the mid-range value - i.e. - if the angle is 20°, the
desired oil level is 7.
(k) Install the oil filler plug, first checking that the sealing O-ring is not twisted. Ensure that the
seat and O-ring are clean.
(l) Torque the plug from 6 to 9 foot-pounds (0.8 to 1.2 kg-m). Do not over tighten the plug to
stop a leak. If plug leaks, remove it, and install a new O-ring.
To Next Page
Loading...
Need help?
General