TM 5-4310-350-14
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. COMPRESSOR PUMPS TOO SLOWLY
Step 1. Check intake muffler to see if it is clogged.
a. Wipe off the outside of the muffler body.
b. Using figure 5-6 as a guide, disassemble the intake muffler (HR5-8M-3) as follows:
(1) Remove wing nut (1) lower cover (2) screen (3) element (4) separator (5) plate (6)
upper cover (7) ferrule (8) and T-stud (9).
WARNING
Dry cleaning solvent PD680, used to clean parts is potentially dangerous to personnel and
property. DO not use near open flame or excessive heat. Flash point of solvent is 100 F.
-- 138 F.
(2) Wash all parts of the muffler and wipe dry. Wash element and blow dry with low com-
pressed air.
(3) Inspect element for excessive wear or loss of capacity to retain dust and dirt. Replace a
defective element.
c. Reassemble the intake muffler (HR5-8M-3) as follows:
(1) Install the T-stud (9) ferrule (8) upper cover (7) plate (6) separator (5) element (4)
screen (3) lower cover (2) and wing nut ( 1).
(2) Tighten wing nut finger tight.
d. Using figure 5-6.1 as a guide, disassemble the intake muffler (Model HR5-8M-4) as follows:
(1) Remove square nut (40, fig. 5-6.1)
(2) Remove machine screw (41) and separate air intake halves (42).
(3) Remove filter elements (43 and 44).
WARNING
Dry cleaning solvent P-D-680, used to clean parts is potentially dangerous to personnel and property.
Do not use near open flame or excessive heat. Flash point of solvent is 100 F -138 F.
(5) Inspect elements for excessive wear or loss of capacity to retain dust and dirt. Replace a defective
element,
e. Reassemble the intake muffler (Model HR5-8M-4) as follows:
(1) Install elements (43 and 44) in air intake halves (42) and fit halves together.
(2) Install machine screw (41) and secure with square nut (40).
Step 2< Check V-belts for proper adjustment. Also make a visual inspection of belts and condition to deter-
mine if the belts require removal for cleaning and deglazing. If deglazing appears necessary, remove
the lock belt guard.
a. Loosen motor mounting screws ( fig. 5-4) securing motor to receiver. Move motor toward
compressor, then lift belts off of the pulleys.
WARNING
Dry cleaning solvent PD680, used to clean parts is potentially dangerous to personnel and
property. Do not use near open flame or excessive heat. Flash point of solvent is 100 F.
-- 138 F.
b. Use a cloth dampened in dry cleaning solvent P-D-680 to remove oil and dust film. If the
belts appear to have been saturated, and the heat has glazed the surfaces of the Vee's, proceed as
follows :
C. Use a medium grade of grit sand paper (not emery cloth) and rough up the surfaces with
strokes of uneven direction,
NOTE
When installing new belts, never pry the belts over the pulley grooves.
Change 2
5-10
