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ENGINE RUNS ROUGH OR LACKS POWER.
Up
TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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FUEL CONSUMPTION EXCESSIVE.
TM 5-2420-224-20-1
Table 3-5. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
ENGINE (CONT)
WARNING
D i e s e l fuel is flammable. Do not perform this procedure near fire, flame, or
sparks. Injury or death to personnel could result.
Step 3. Check for clogged fuel cap (vent).
If fuel cap is clogged, clean vent or replace fuel cap
(page 4-47).
If fuel cap is not clogged, go to step 4.
Step 4. Check for water/contamination in fuel tank.
If there is water/contamination in fuel tank, drain fuel tank until
only fuel drains out (page 4-40).
If there is no water/contamination in fuel tank, go to step 5.
Step 5. Check for air leaks and damaged fuel lines.
If there are air leaks or damaged fuel lines, tighten loose
connections or replace fuel lines (pages 4-25, 4-44).
If there are no air leaks or damaged fuel lines, go to step 6.
NOTE
If STE/lCE-R Cl Engine GO-NO GO Chain does not diagnose cause of problem, return to
this troubleshooting table.
Step 6. Perform STE/lCE-R Cl Engine GO-NO GO Chain test procedures in the DCA
diagnostic mode.
If malfunction is found, refer to List of Tasks (page iii) or
Alphabetical Index (page Index-1) and repair or replace
damaged or faulty components.
If malfunction is not found, go to step 7.
Step 7. Check valve adjustment (page 4-5).
If valves require adjustment, adjust valves to proper tolerances
(page 4-5).
If valves do not require adjustment, notify direct support
maintenance.
3-81

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