TM 9--2350--292--20--1
0097 00--4
BOOM FAILS TO OPERATE OR OPERATES ROUGHLY -- CONTINUED
0097 00
no
yes
Go to Step K.
G
Is pressure at PR TEST port 385--470 psi?
CONTINUED FROM STEP F
no
yes
CONTINUED ON NEXT PAGE
1. Remove 0--5000 psi dial pressure gauge from
hydraulic control valve manifold assembly and install
the gauge with 1/2--inch tee between the boom
shutoff valve port A and attaching hose.
2. Install 0--4000 psi testing gauge assembly with
1/4--inch tee between boom shutoff valve PILOT
port and attaching hose.
3. Install another 0--4000 psi testing gauge assembly in
the PR TEST port of the hydraulic control valve
manifold assembly.
4. Start the main engine and main hydraulics
(TM 9--2350--292--10). Set engine speed to 1800
rpm.
5. Read gauges and record results.
6. Shut down hydraulics and main engine
(TM 9--2350--292--10).
Is pressure at boom shutoff valve pilot port 385--470 psi?
Is pressure at port A greater than 0 but less than 60 psi?
no
yes
Notify Direct Support
Maintenance.
Notify Direct Support
Maintenance.
WARNING
