TM-5-4310-356-14
motor towards compressor to loosen V-belt tension.
compressor assembly as follows:
(3) Remove V-belts.
(1) Position compressor assembly on tank
and install mounting bolts after aligning flywheel with
belts as follows:
motor pulley and installing V-belts on pulleys.
(1) Install V-belts on compressor and motor
(2) Tighten compressor mounting bolts.
pulleys.
(3) Install and connect aftercooler tube.
increasing V-belt tension. Make sure pulleys are in
(4) Install
V-belt
guard
and
attaching
correct alignment.
Tighten motor mounting bolts
hardware.
slightly.
4-15. V-Belts
(3) Press on the V-belts with your fingers
a. Inspection.
midway between the motor drive pulley and the
compressor flywheel. Proper V-belt tension is when the
(1) Make a visual inspection of the belts to
belt deflection is no more than one-half inch.
determine their condition.
(4) When proper belt tension is obtained
(2) If the belts are worn, frayed, or bad,
tighten motor mounting bolts securely.
replace with a new set.
(5) Install V-belt drive guard and attaching
b. Cleaning.
hardware and tighten securely.
WARNING
e. Adjustment.
Dry cleaning solvent, P-D-680,
(1) If necessary, adjust the tension as follows:
used to clean parts is potentially
dangerous to personnel and
(a) Loosen motor mounting screws (fig.
property. Use in a well ventilated
45). It is not necessary to remove the mounting screws.
area as the fumes are dangerous
if inhaled. Avoid repeated and
(b) Move the motor away from
prolonged skin contact. Do not
compressor until proper tension is obtained on the V-
use near open flame or excessive
belts, para d. (3). Be sure pulleys are in correct
heat. Flash point of solvent is
alignment.
100 . -138 .(38 . -59 .).
F
F
C
C
(c) Tighten motor mounting bolts to
(1) Use a cloth dampened in cleaning
secure adjustment.
solvent, P-D-680, to remove oil and dust from the belts.
CAUTION
(2) If the belts have become saturated with oil
Do not adjust the V-belts too
and dirt, replace with a new set.
tightly as this will overload motor
and compressor bearings. Also
check and be sure motor pulley is
belts as follows:
square in relationship to the
mounting base and flywheel to
(1) Remove attaching hardware and remove
avoid binding and excessive wear
V-belt drive guard.
of the V-belts.
(2) Loosen motor mounting bolts and move
(2) Install V-belt guard.
4-7
