TM 5-3895-385-23-1
0090
Table 1. Truck Hitch Arms Fail to Retract Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Check hydraulic pressure at
1. If hydraulic pressure reads a
hydraulic pressure test port on
minimum of 1800 pounds per
the main hydraulic manifold
square inch (psi) (12,410
while pressing auger raise key
kiloPascals (kPa)), turn keyless
on pedestal top (TM 5-3895-385-
engine switch to the OFF
10).
position (TM 5-3895-385-10),
and proceed to next malfunction.
2. If pressure reads below 1800 psi
(12,410 kPa), turn keyless
engine switch to the OFF
position (TM 5-3895-385-10),
and proceed to WP 0106.
5. Hydraulic solenoid malfunction.
1. Start BMPM engine (TM 5-3895-
385-10).
2. Attempt manual override test of
1. If truck hitch arm retracts, turn
truck hitch retract hydraulic
keyless engine switch to the
solenoid (WP 0441, Vol 3,
OFF position (TM 5-3895-385-
Figure 4) on main manifold (WP
10), and replace truck hitch
0312, Vol 2).
extend hydraulic solenoid (WP
0312, Vol 2).
2. If test fails, turn keyless engine
switch to the OFF position (TM
5-3895-385-10), and proceed to
next test.
3. Attach hydraulic pressure tester
(WP 0442, Vol 3) to hydraulic
pressure at hydraulic fitting THB
on the main hydraulic manifold
(WP 0441, Vol 3, Figure 3, Item
11).
4. Start BMPM engine (TM 5-3895-
385-10).
5. Check hydraulic pressure at
1. If hydraulic pressure reads a
hydraulic fitting THB on the main
minimum of 1800 psi (12,410
hydraulic manifold (WP 0441,
kPa), proceed to next
Vol 3, Figure 3, Item 11) while
malfunction
pressing truck hitch out key on
pedestal top (TM 5-3895-385-
10).
0090-3
