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Table 1. High-Pressure Fuel Supply System Test - Continued.
Table 1. High-Pressure Fuel Supply System Test - Continued.

Maintenance Manual For Hydraulic Excavator Type 1 With Hydraulic Thumb And Quick Latch -1 Page Navigation
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TM 5-3805-294-23-1
0130
Table 1. High-Pressure Fuel Supply System Test - Continued.
Test or Inspection
Corrective Action
Malfunction
Perform Safety Relief Valve
1.
If fuel flow through the safety
8.
Safety Relief Valve
relief valve is present, replace
Test.
Test. (Volume 3, WP 0368)
safety relief valve (Volume 3,
WP 0434) then proceed to
Malfunction 5.
2.
If fuel flow through the safety
relief valve is not present,
reinstall return line (Volume 3,
WP 0368), then proceed to
Malfunction 9.
Perform Fuel Injector Leak-off
1.
If fuel flow was greater than
9.
Fuel Injector Leak-
11.3 oz. (333 mL) per minute,
off Test.
Test. (Volume 3, WP 0341)
proceed to Malfunction 10.
2.
If fuel flow was less than 11.3
oz. (333 mL) per minute,
proceed to Malfunction 11.
1.
Remove fuel injectors.
10.
Fuel Injectors
Faulty.
(Volume 3, WP 0408)
2.
Inspect fuel injectors for
1.
If damaged, replace affected
damage or missing hardware.
fuel injector(s). (Volume 3,
WP 0408) Restore machine to
original condition. Clear and
refresh DTCs. (Volume 3,
WP 0362)
2.
If missing hardware, replace
hardware. (Volume 3,
WP 0408) Restore machine to
original condition. Clear and
refresh DTCs. (Volume 3,
WP 0362)
3.
If not damaged or missing
hardware, install fuel injectors
(Volume 3, WP 0408), then
proceed to Malfunction 11.
Perform Cylinder
1.
If one cylinder has 10 percent
11.
Service ADVISOR
Compression Test (Volume 3,
or higher compression than the
Cylinder
other cylinders, replace
Compression Test.
WP 0321) in Service
ADVISOR. Note readings.
injector (Volume 3, WP 0408),
in affected cylinder then
proceed to Malfunction 5.
All cylinders have similar
2.
compression ratios less than
10 percent difference, proceed
to Malfunction 12.
0130-6


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