TM 5-3895-385-23-1
0089
Table 1. Truck Hitch Arms Fail to Extend 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
1. If test is successful (truck hitch
(WP 0312, Vol 2) of truck hitch
arm extends), turn keyless
extend hydraulic solenoid on
engine switch to the OFF
main manifold (WP 0441, Vol 3,
position (TM 5-3895-385-10),
Figure 4).
and replace truck hitch 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 THA
on the main hydraulic manifold
(WP 0441, Vol 3, Figure 3, Item
16).
4. Start BMPM engine (TM 5-3895-
385-10).
5. Check hydraulic pressure at
1. If hydraulic pressure reads a
hydraulic fitting THA on the main
minimum of 1800 psi (12,410
hydraulic manifold (WP 0441,
kPa), proceed to next
Vol 3, Figure 3, Item 16) while
malfunction.
pressing truck hitch out key on
pedestal top (TM 5-3895-385-
10).
0089-3
