THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 29
Jun 1/03
2D17
21-50-00
E. Compressor (See Figure 13.)
The engine driven compressor is mounted on the left front of the engine. A V-belt connected to the
ring gear pulley drives the compressor through a magnetic clutch.
(1) Compressor Service
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT, MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)
It is not advisable to service the compressor in the field. It should be done by a qualified shop
which has the special equipment and trained personnel required to properly service the unit.
Maintenance of the Sanden compressor is limited to Removal and Installation of Compressor,
checking the compressor oil level and replacement of worn drive belt. Contact Sanden
International, for special tools and instructions for detailed compressor maintenance. (Refer to
Vendor Publications in the Introduction for the address and phone number.)
CAUTION: AN IMPORTANT FACTOR IN AIR CONDITIONING SERVICING IS
CLEANLINESS. TAKE CARE TO PREVENT DIRT OR FOREIGN MATERIAL
FROM ENTERING THE SYSTEM. ALL HOSE AND TUBING ENDS SHOULD BE
CAPPED IMMEDIATELY. ANY LUBRICATION REQUIRED IN THE ASSEMBLY
OF THE COMPONENTS SHOULD BE REFRIGERANT OIL OF THE TYPE
USED IN THE COMPRESSOR.
(2) Removal
The system must be discharged before removing compressor. Refer to Discharging, paragraph
3.C, above. Remove the compressor as follows:
(a) Be sure the air conditioning circuit protector is in the off position.
(b) Remove engine cowling and right front baffles.
(c) Disconnect the electrical leads to the magnetic clutch on the compressor.
(d) Discharge the air conditioning system to an appropriate environmentally approved
refrigerant recovery station. See Discharging, paragraph 3.C, above.
(e) Remove the suction and discharge lines from the connections on the compressor.
NOTE: All open lines should be capped immediately to prevent dirt and moisture from
entering the system.
(f) Loosen bolt securing compressor idler pulley to release belt tension and remove belt from
pulley. (Do not force belt over pulleys.)
(g) Support compressor and remove bolts securing compressor to engine mounting brackets.
(h) Remove compressor.
(3) Installation
Install the compressor as follows:
(a) Align compressor mounting lugs with mounting brackets. Install bolts and progressively
tighten to a torque of 30 foot pounds. (Safety with cotter pins). If required, adjust
compressor drive sheave forward and aft alignment by adding shims (LYC. P/N 76534 -
1.130 IN. OD x .410 IN. ID x .005 IN. THK) between the compressor mounting bracket and
compressor mounting ears. See Drive Belt Service, below, for additional alignment details.
(b) Check oil level in compressor as described in Checking Compressor Oil, below.
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