Quantcast Table 4-4. Test Stand Shutdown Performance Checks

 

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Table 4-3. Hydraulic Performance Checks During System Test
Up
TM-55-4920-405-13-P Test Stand Hydraulic System Gasoline Engine Driven Type D-5C Manual
Next
TROUBLE ANALYSIS. - TM-55-4920-405-13-P0056
TM 55-4920-405-13&P
Table 4-3. Hydraulic Performance Checks During System Test - Continued
Normal
Abnormal
Step
Action
Indication
Indication
Corrective
Action
(1) Defective HIGH
(3) Replace defective gage,
(cont)
PRESS RELIEF
VALVE.
(2) Defective or incor-
rectly set FLUID
PRESS GAGE
SHUTOFF valve.
(3) FLUID PRESSURE
GAGE defective.
Hydraulic fluid
b. Fluid not flowing
b.
Clear problem in system
flows through
through system under
under test.  Replace de-
system under
test because of
fective hose assembly or
test.
blockage in system
coupling.
under test, or defec-
tive hose assembly or
coupling.
q
Table 4-4. Test Stand Shutdown Performance Checks
Normal
Abnormal
Indication
Corrective
Action
Action
Step
Indication
1
HIGH PRESS BY-
HIGH PRESS BYPASS
Repair or replace valve.
Set HIGH PRESS
PASS VALVE
VALVE control binds
BYPASS VALVE
control operates
or cannot be set to
control (19, figure
2-1) to OPEN.
smoothly.
OPEN because valve
is defective.
Turn FLOW CON-
Repair or replace valve.
FLOW CONTROL
Hydraulic fluid
VALVE cannot be
TROL VALVE (12,
flow to system
closed because valve
under test is shut
is defective.
off .
CW to close.
Repair or replace pressure
3
Turn PRESSURE
PRESSURE
PRESSURE COMPEN-
COMPENSATOR
COMPENSATOR
SATOR cannot be
compensator.
operates
opened because it is
fully CCW to open.
smoothly.
defective.
4
Engine idles
Engine stalls. Prob-
a. Repair or replace de-
Adjust THROTTLE
smoothly.
fective fuel pump.
able cause:
idle engine about
b. Replace fuel strainer.
a. Defective fuel pump.
c. Adjust, repair or replace
5 minutes.
b. Clogged fuel
carburetor.
strainer.
c . Carburetor incor-
rectly adjusted.
Engine stops.
a. Replace switch.
Engine continues to
5
Set IGNITION
b. Replace defective engine
run for several min-
SWITCH (2, figure
utes.  Probable
temperature switch.
2-2) to OFF.
cause:
a. Defective IGNITION
switch.
b. Engine temperature
is too high.
Replace defective hose assem-
Hose assemblies are
6
Hose assemblies
Remove hose
bly or coupling.
difficult to remove be-
assemblies.
can be removed
cause hose assembly or
without difficulty.
coupling is defective.
4-7

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