Perform leakage test (b)
Semitrailers M270 and M269
f air lines,
Caution: Before attempting to remove components
release air pressure from system by opening drain cock on air
(1) R e m o v a l . R e m o v e e m e r g e n c y r e l a y v a l v e ( p a r . 6 0 e ( 1 ) ) .
Remove four hex-head bolts, plain washers, and safety
nuts which secure air reservoir to two brackets welded
to chassis frame cross members. Lower reservoir and
remove two grommets from top of each bracket ex-
tending from end of reservoir and two cushioned clips
securing hose assemblies to brackets.
ets welded to chassis frame cross members.
two grommets on top of bracket extending from each
end of reservoir. Aline grommets, and holes in bracket
at each end of reservoir with holes in brackets welded
Install one 3/8-inch plain washer, one
cushioned clip with hose assembly attached, and one
3/8-inch safety nut on each inner 3/8 x 1 hex-head
bolt. Install one 3/8-inch safety nut and one 3/8-inch
leakage test (b above).
Brake Air Chamber and Hydraulic Master Cylinder
With brakes applied fully, coat brake air
a. Leakage Tests.
flanges, connections, and plug with soapsuds to check
at flanges, tighten flange screws evenly and sufficiently to stop
Do not tighten flange screws too tight as it will distort
flanges and cause new leakage. If leakage is found at con-
Coat area be-
nection or plug, tighten connector and plug.
tween brake air chamber body and mounting bracket, and drain
If leakage, is found, notify ordnance
hole to check for leakage.
TAGO 1321 B