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 TM 55-1905-223-24-10
CAUTION
o The common mounting surfaces of the brake, the motor and the gear reducer are
machined to close tolerances and should be protected from damage during removal,
repair and installation.
o Cleanliness and care during repair are important. Before disassembly of any
components, plug all ports and thoroughly wash the outside of the assembly with
cleaning solution to remove grit and dirt. When removing internal components, care
must be taken so that sealing surfaces are not scratched or otherwise damaged. Inspect
all packing grooves and mating surfaces for severe wear or other damage. Any metal
parts showing severe wear should be replaced.
CAUTION
This assembly is spring loaded. Springs may fly free in disassembly.
a. With shaft protrusion down, alternately remove assembled washer/screws (29), power plate (26), and housing
gasket (8) from housing (7). Discard gasket.
b. Remove straight shaft (13) and stack assembly (30) from housing (7) by lightly tapping or pressing on small
external spline end of the shaft.
c. To disassemble stack assembly (30), remove ball bearing (24), torque pins (14), stationary disks (18), rotating
disks (16), compression springs (17 ), and primary disk (15) from straight shaft (13).
d. From housing (7), remove compression springs (12), spring retainer (11), oil seal (10), and ball bearing (9).
WARNING
High pressure compressed air tanks, piping systems, and air operated devices possess
potential for serious injury to eyes and exposed areas of skin due to escaping air
pressure.
e. To disassemble power plate (26), remove pressure valve (28); then, remove piston (19) by introducing low
pressure air (15 psi) into hydraulic inlet wher e valve (28) was.
4-37
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