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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
12.
Monitor Low-Pressure Fuel
Pump - Actual Pressure while
cranking engine for 30
seconds (TM 5-3805-294-10).
(Volume 5, WP 0794) Note
reading.
13.
When finished monitoring,
select Readings and select
Disconnect From Model(s).
(Volume 3, WP 0363)
14.
Select Yes to terminate your
readings connection. (Volume
3, WP 0363)
15.
Turn key switch to OFF
1.
If Actual Pressure decreased
position (TM 5-3805-294-10).
to -2 kPa to -10 kPa (-3 to -14
psi), reconnect engine
(Volume 5, WP 0794)
interface wiring harness
connector C32 to low-pressure
fuel pump (Volume 5,
WP 0800, Figure 34) then
proceed to Malfunction 8.
2.
If Actual Pressure did not
decrease to -2 kPa to -10 kPa
(-3 to -14 psi), proceed to
Malfunction 7.
Perform Suction Control Valve
1.
If less than 1.7 oz. (50 mL) in
7.
Suction Control
30 seconds, replace high-
Valve Faulty.
Test. (Volume 3, WP 0371)
pressure fuel pump. (Volume
3, WP 0436) Restore machine
to original condition. Clear and
refresh DTCs. (Volume 3,
WP 0362)
2.
If greater than 1.7 oz. (50 mL)
in 30 seconds, proceed to
Malfunction 8.
0130-5


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