TM 5-3805-25420-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
14. ENGINE BLOWS BLACK OR GREY SMOKE.
Step 1.
Check AIR CLEANER VACUUM reading (TM 5-3805-254-10). If in red zone, remove air cleaner element
(1) (page 2-452) and check for clogged or damaged condition.
a.
If air cleaner element (1) is clogged or damaged, clean or replace (page 2-452).
b.
If air cleaner element (1) is not clogged or damaged, install (page 2-452) and go to step 2.
Step 2.
Check muffler (2) and exhaust pipes (3) for clogged or damaged condition.
a.
If muffler (2) or exhaust pipes (3) are clogged or damaged, clean or replace (page 2-604 or 2-590).
b.
If muffler (2) or exhaust pipes (3) are not clogged or damaged, go to step 3.
Step 3.
Check for loose, broken, or kinked lines (4) at aneroid control valve (5).
a.
If lines (4) are loose, tighten using two 9116-inch open-end wrenches.
b.
If lines (4) are broken or kinked, notify Direct Support Maintenance.
15. ENGINE DOES NOT ACCELERATE
Step 1.
Check for kinked, bent, or clogged fuel lines at fuel tanks (6).
a.
If fuel lines are kinked, bent, or clogged, notify Direct Support Maintenance.
b.
If fuel lines are not kinked, bent, or clogged, go to step 2.
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