TM 5-3810-295-34
Table 2-1
Troubleshooting Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 7.
Check for fault starter. Starter may not engage ring gear, or starter windings may be shorted.
Replace faulty starter as described in paragraph 3-8 (crane) or 13-2 (carrier).
Step 8.
Check for missing teeth on engine ring gear. Replace ring gear as described in chapter 4 (crane) or
chapter 14 (carrier).
2. ENGINE CRANKS BUT WILL NOT START.
Step 1.
Check fuel level.
If vehicle is out of fuel, refill it.
Step 2.
Check for restricted air intake.
Clean or replace air cleaner as described in TM 5-3810-295-12.
Step 3.
Check for air leaks in vacuum lines.
Repair air leaks or replace lines.
Step 4.
Check for restricted fuel line injector.
Locate restriction and remove.
Step 5.
Check fuel pump for damage.
Repair fuel pump as described in paragraph 3-49 (crane) or paragraph 13-21 (carrier).
Step 6.
Check for incorrect injector and valve timing.
Correct timing a described in chapter 4 (crane) or chapter 14 (carrier).
Step 7.
Check for burned or sticking valves.
Repair valves as described in paragraph 4-4 (crane) or paragraph 14-18 (carrier).
Step 8.
In low temperature areas, check for defective starting aid.
Repair starting aid as described in TM 5-3810-29S-12.
Step 9.
Check for low compression due to broken piston rings) or scored cylinder liner.
Repair liner or replace rings a required. See chapter 4 or 14.
Step 10.
Check for faulty governor or injector rack settings.
Refer to chapter 4 (crane) or chapter 14 (carrier) and repair or adjust governor.
Step 11
Check for stuck air shut-down valve in air inlet.
Refer to chapter 3 (crane).
Step 12.
Check for restricted exhaust system.
Remove restriction from exhaust system.
3. ENGINE MISSES.
Step 1.
Check for poor quality fuel.
Drain fuel tank and refill with appropriate quality fuel.
Step 2.
Check for clogged or leaking fuel lines.
Clean lines or replace broken tubing.
Step 3.
Check for restricted air intake (dirty air cleaner).
Clean or replace air cleaner as described in TM 5-3810-295-12.
Step 4.
Check for clogged injector spy holes.
Clean or replace injectors as described in paragraph 3-61 (cane) or paragraph 14-13 (carrier).
Step 5.
Check for worn or broken piston rings.
Replace broken rings as described in paragraph 4-36 (crane) or paragraph 14-31 (carrier).
Step 6.
Check governor adjustment.
Adjust governor linkage as described in paragraph 3-55 (crane).
Step 7.
Check engine timing.
Time engine as described in paragraph 14-15.
Step 8.
Check engine air blower (crane).
Refer to paragraph 3-37 (crane) and repair blower.
Step 9.
Check for restriction in exhaust system.
Refer to TM 5-3810-295-12 and repair exhaust system.
4. NOISY ENGINE.
Step 1.
Check for excessive tappet/push rod clearance.
Adjust push rods (hot) as described in chapter 4 and chapter 14.
Change 1 2-2
