Quantcast TSUM - 4-011 Electrical Trouble Shooting (Part 2)

 

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TSUM - 4-011 Electrical Trouble Shooting (Part 1)
Up
TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
Next
TSUM - 4-011 Electrical Trouble Shooting (Part 3)
TM 5-5420-279-23
TSUM - 4-011 Electrical Trouble Shooting (Part 2)
All Maintainer Tasks
Electrical trouble shooting
part 2
Trace the harness back to the
PCB junction box and carry out
a harness continuity test. see
m aintenance procedure
5-142
Locate the solenoid
valve, proxim ity switch
or pressure switch in
the defective circuit
Carry out a voltage drop test
Replace
at the working end of the
No
Is
solenoid valve, proxim ity
the harness see
No
the harness OK
m aintenance procedure
switch or pressure switch
6-086
harness see m aintenance
procedure 5-144
Yes
Replace the PCB
Is
Is
junction Box. See
there 24V at the
there electrical power at the
Yes
m aintenance
working end of the
PCB juction box
procedure
harness
input
6-065
Yes
No
Carry out a resistance
Trace the electrical
check at the solenoid
valve, proxim ity switch or
power supply from the
m ain junction box to
pressure switch see
m aintenance procedure
the PCB junction box
6-075
Replace the Hydraulic valve
solenoid if the reading taken is below
20 ohm s. See the relevant
Go to
m aintenance procedure for the
part 3
hydraulic valve of the solenoid under
test.

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