TM 5-3810-306-34
b. Install two new preformed packings (22) on side
WARNING (Cont'd)
of brake piston (18).
and get medical aid.
If
c. Install two new preformed packings (23) on
contact with eyes is made,
brake cylinder (19).
wash your eyes with water
and
get
medical
aid
d. Lubricate piston and cylinder mating surfaces
immediately.
with light coating of oil.
Compressed air used for
e. Start brake piston (18) into brake cylinder (19).
cleaning purpose will not
Ensure bolt holes in end of brake piston are
exceed 30 psi. Use only with
aligned so vent hole will face up when installed in
effective chip guarding and
brake housing (14) and mounted on hoist.
personal
protective
equipment
(goggles/shield,
f. Use soft faced hammer to tap brake piston (18)
gloves, etc.).
into brake cylinder (19).
CAUTION
g. Install new preformed packings (20) and (21) on
end of piston (18).
Do not
use
gasoline
as
solvent.
2. SET NINE BRAKE SPRINGS (16) INTO POSITION
ON CAST SPROCKET OF BRAKE CYLINDER (19).
1. CLEAN ALL PARTS THOROUGHLY IN SOLVENT
AND DRY WITH COMPRESSED AIR.
3. INSTALL BRAKE HOUSING (14).
INSPECTION:
a. Set piston/cylinder assembly on wood block
about five inches high and with a circumference
1. INSPECT ALL PARTS FOR WEAR AND OBVIOUS
less than that of brake housing (14).
DAMAGE.
WARNING
2. MEASURE SPRINGS (16).
Ensure the brake cylinder is
a. Springs (16) should measure 2.5 in. (63.5 mm)
installed so the vent hole will
long (free length).
be at the top when installed
on the hoist.
b. If any spring measures less than 2.375 in.
(60.325 mm) all nine springs should be replaced.
b. Set brake housing (14) over piston cylinder
assembly aligning the capscrew holes.
INSTALLATION:
1. INSTALL BRAKE PISTON (18).
a. Lubricate preformed packings (20), (21), (22),
and (23) and brake piston (18) with clean
hydraulic oil.
CAUTION
Do not damage the preformed
packings.
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