THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 1
Feb 19/04
3J19
37-00-00
GENERAL
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.)
1. Description and Operation (See Figures 1 and 2.)
NOTE: In 6X S/N’s 3232014 & up and 6XT S/N’s 3255015 & up, when equipped with the optional
Avidyne Entegra Electronic Flight Display System, no vacuum system is installed.
The vacuum system operates the gyro instruments which provide critical flight information (i.e. - attitude
and direction). It consists of the plumbing necessary to connect the components, and:
A. Two (2) engine-driven vacuum pumps located on the accessory case at the rear of the engine;
B. Two (2) vacuum regulators, two (2) vacuum switches, and a manifold located under the forward
baggage compartment floor;
C. A filter located on the upper left, aft side of the forward bulkhead; and,
D. A vacuum gauge located at the lower left side of the instrument panel.
The two engine-driven pumps run continously, providing system redundancy. If either pump fails, the
associated vacuum switch will activate the associated VACUUM INOP annunciator light when the suction
from the failing pump drops below 3.5 psig.
Maintenance, other than that described in 37-10-00 and 37-20-00, must be performed by the instrument
manufacturer or an authorized instrument repair station.
2. Troubleshooting
See Chart 1.
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