TM 5-5420-234-14&P
5-2. DIRECT SUPPORT TROUBLESHOOTING (continued).
7.
BAP WINCH DOES NOT OPERATE (continued).
VALVE BLOCK BYPASS
WARNING
4
The LHS hydraulic system operates at oil
5
pressures up to 3625 psi (24,994 kPa). Never
disconnect any hydraulic line or fitting with-
1
out first dropping pressure to zero. Failure
to comply with this warning may result in
serious injury or death to personnel.
2
7
(1)
Loosen tube nut (1) at winch motor elbow (2).
(2)
Remove inlet tube (3) from valve block (4).
10
3
NOTE
8
It may be necessary to loosen elbow on winch
motor in order to fully rotate tube downward.
6
(3)
Rotate inlet tube (3) downward.
9
(4)
Tighten tube nut (1) on winch motor elbow (2).
(5)
Install plug (5) on valve block (4).
(6)
Remove male quick-disconnect hose (6) from
dummy coupling (7). Remove opposite end of
hose (6) from tube nut (8).
( 7 ) Install male quick-disconnect hose (6) on inlet
tube (3).
( 8 ) Remove female quick-disconnect hose (9) from
dummy coupling (10).
( 9 ) Attach two quick-disconnect hoses (6 and 9) to
Transporter.
( 1 0 ) Start engine.
PTO ENGAGE
( 1 1 ) Turn PTO ENGAGE switch (11) to ON.
NOTE
Oil will leak from hydraulic tubing when the
11
OFF
ON
WINCH switch is in the neutral position. Place
drain pan under tubing to collect oil.
( 1 2 ) Move WINCH switch (12) to the OUT position,
then to the IN position while observing winch
operation.
( 1 3 ) Turn PTO ENGAGE switch (11) to OFF position.
( 1 4 ) Shut off engine.
( 1 5 ) Install female quick-disconnect hose (9) on
dummy coupling (10.
( 1 6 ) Remove male quick-disconnect hose (6) from
inlet tube (3).
( 1 7 ) Install male quick-disconnect hose (6) on tube
nut (8).
( 1 8 ) Install male quick-disconnect hose (6) on dummy
coupling (7).
( 1 9 ) Remove plug (5) from valve block (4).
( 2 0 ) Loosen tube nut (1) on winch motor elbow (2).
( 2 1 ) Rotate inlet tube (3) upward.
12
( 2 2 ) Install inlet tube (3) on valve block (4).
( 2 3 ) Tighten tube nut (1) on winch motor elbow (2).
5-47