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Page Title:
TSUM - 2-029 Upper Winch Function Check Part 4 |
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 TM 5-5420-279-23
TSUM - 2-029 Upper Winch Function Check Part 4
Part 4
All Maintainer Tasks
CAUTION
W hen checking function of
winches by paying out rope allow
ONLY SUFFICIENT SLACK to
Fit pressure
dem onstrate correct functioning.
gauge to TPPA on
DO NOT ALLOW SLACK rope to
Launch Fram e
becom e caught on other parts of
W inch Control
the equipm ent or becom e
Manifold
incorrectly positioned on sheave
blocks etc.
Operate joystick to
pay out.
NOTE CAUTION
Does
P m ore than 1450 psi (10000 kPa)
P less than 1450 psi
gauge
but less than
(10000 kPa)
read
3191 psi (22000 kPa)
P = 3191 psi
(22000 kPa)
Fit pressure
Replace both
Replace relief
gauge to TPP on
SV13 and SV14 on Launch Fram e
valve cartridge assem bly on
Launch Fram e
W inch Control Manifold. See
Launch Fam e W inch Control
W inch Control
m aintenance procedure
Manifold. See m aintenance
Manifold
5-122
procedure 5-132, item 3
Does
Carry out Pum p Function
gauge read
Check. See hydraulic trouble
No
653 psi (4500 kPa)
shooting chapter 2 procedure
or m ore
2-030
Yes
Replace proportional valve
PV1 on Launch Fram e W inch
Control Manifold. See
m aintenance procedure 5-122
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