TM 5-3895-385-23-1
0154
Table 1. Screed Crown Fails to Crown Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Loss of hydraulic pressure at
1. Check hydraulic hoses from load
1. If leaks or damage is found,
main hydraulic manifold.
sense hydraulic pump to main
replace damaged hydraulic
hydraulic manifold for leaks or
hose (WP 0291, Vol 2).
pinches (WP 0291, Vol 2).
2. If no leaks or damage is found,
proceed to next test.
2. Attach hydraulic pressure tester
(WP 0442, Vol 3) to hydraulic
pressure test port on the main
hydraulic manifold (WP 0449,
Vol 3, Figure 3).
3. Start BMPM engine (TM 5-3895-
385-10).
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.
6. Hydraulic solenoid malfunction.
1. Attempt manual override test of
1. If screed crown operates, turn
screed crown up hydraulic
keyless engine switch to the
solenoid on main manifold (WP
OFF position (TM 5-3895-385-
0312, Vol 2).
10) and replace screed crown up
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.
2. Attach hydraulic pressure tester
(WP 0442, Vol 3) to hydraulic
pressure at hydraulic fitting PCB
on the main hydraulic manifold
(WP 0441, Vol 3).
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