Piper Cherokee Six Service Manual page 706

VALVE ASS'Y
PIPER CHEROKEE SIX SERVICE MANUAL
TO EVAPORATOR
CAPILLARY COIL
FROM RECEIVER
DEHYDRATOR
Figure 13-13. Expansion Valve
13-38. EXPANSION VALVE INSTALLATION.
a. Install the expansion valve in the inlet line of the evaporator core by coupling the
related fittings. (Seal all couplings with sealant applied to tube flanges only.) Torque fittings
per Table XIII-11.
b. Secure the capillary coil to the evaporator outlet line.
c. Evacuate and charge the system. (See Paragraphs 13-13 and 13-14.) Check for leaks.
(See Paragraph 13-9.)
d. Replace access panels.
13-39. EVAPORATOR ASSEMBLY. The evaporator assembly consists of the evaporator
core, receiver-dehydrator, expansion valve, circulating fan and pressure switch together with
necessary housing and plumbing. The housing is fabricated of Cycolac type material. The
condensed moisture is dumped overboard through a hose clamped to a fitting on the bottom
of the evaporator housing.
13-40. EVAPORATOR ASSEMBLY REMOVAL. The evaporator assembly is located
behind the cabin rear panel, attached to the mounting panel with 12 screws and washers and
a bracket securing the back to the mounting panel.
a. Remove air conditioning filter cover, filter and rear access panels.
NOTE
Discharge the system before disassembling any components
for service.
ACCESSORIES AND UTILITIES
Issued: 8/17/72
3H16