Piper PA-32RT-300T User Manual

LANCE II SERVICE
MANUAL
2. Obtain a basic measurement
from the top of the ring gear by
measuring the
width of the starter ring gear plus the dimension from the forward machined surface of the
ring gear to the forward edge of the compressor drive belt. (Refer to Figure 14-10.)
3. The check and adjustments
of the compressor and/or alternator
drive belts
require different
procedures. Refer to following
appropriate instructions.
f. Compressor
Belt Alignment:
(Refer to Figure 14-10.)
1. Place the straightedge against the right forward side of the ring gear and measure
belt alignment at compressor sheave (Point-B).
2. Measure belt alignment at the compressor idler pulley (Point-A). The belt
misalignment at Point-A should be half the misalignment of Point-B and the dimension at
the top of the ring gear and in the same direction for and aft.
3.
If at Point-A nominal misalignment
is not within ± .030 of an inch, as
obtained
from step 2, add or remove shims as required. Belt alignment should be made as close to
nominal as shims will allow.
g. Alternator Belt Alignment: (Refer to Figure 14-10.)
1. With the alternator belt installed, align the idler pulley in the belt plane by
adding or removing shims, P/N 62833-82 as required. Refer to paragraph 14-23 for belt
tension adjustment.
14-23. ADJUSTMENT OF DRIVE BELT TENSION. The adjustment of the compressor
and/or alternator drive belts is very important to obtain long belt life and proper component
operation.
a Adjust new compressor
belt to
120 pounds span
tension and new alternator
belt to
90-100 pounds span tension. Use a calibrated belt tension gauge.
NOTE
The higher tension specified for a new belt is to compensate
for
the initial stretch that
takes place as soon as
it is
operated.
These higher tension values
should not be applied
to belts
which previously have been
used. See tensions noted
below
for used
belts.
b. Install engine baffles
if removed and install engine
cowling.
c. Run the engine for a 15 minute period at 1200 RPM.
WARNING
If the air conditioner
is
to be operated
on the
ground for
servicing,
the test area should
be dean and free of any
loose
objects
lying on the ramp. Only
the service valves located
on
the evaporator assembly
should be used for
testing.
d. Shut down
engine and recheck
both belt tensions.
If compressor
belt tension falls
as
low as
60 pounds, retension
to 80 pounds.
If alternator belt tension
falls below 50
pounds,
retension to 70 pounds.
e.
This tension check should be made
at every 100 hours or annual
inspection,
whichever occurs first.
f.
Check all idler and bracket bolts
for safety and replace engine
cowling.
Issued: 1/3/78 ACCESSORIES AND UTILITIES
2K1 7

Piper PA-32RT-300T Specifications

General

Brand	Piper
Model	PA-32RT-300T
Category	Aircrafts
Language	English