TM 5-3805-262-203-30. ENGINE TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION2. ENGINE HARD TO START OR WILL NOT START (NO EXHAUST SMOKE) (Cont).S t e p 6 . ( C o n t ) .NOTEBe sure batteries are at full charge. Don’t do more than two compressionunbalance tests in a row as loader batteries may discharge.Check that fuel SHUT OFF control is pulled completely out.Crank engine for five seconds to clear fuel from cylinders.Set VTM TEST SELECT switches to 14.NOTEWhile cranking engine with bad or discharged batteries, VTM may losepower and come on again after cranking has stopped, displaying -----. Ifthis happens, clean battery posts and clamps and try again. If VTM stilll o s e s p o w e r , connect VTM to another vehicle’s battery. Connect P1 oftest probe cable W2 to J4 of VTM and W2 black test clip to loader bat-t e r y n e g a t i v e p o s t a n d r e d t e s t c l i p t o l o a d e r b a t t e r y p o s i t i v e p o s t.Then set VTM TEST SELECT switches to 15.Press and release TEST.When GO appears on display, crank engine until OFF or E013 appearson display. Be sure to return ignition key switch to off position.Display should indicate (TBD).a. If display indicates (TBD), compression unbalance is okay. Noti-fy next higher maintenance level (additional tests must be per-formed) .b. If display indicates a number higher than (TBD), notify nexthigher maintenance level (additional tests must be performed).c. If FAIL is displayed, compression is too far unbalanced to bemeasured using STE/ICE. Notify next higher maintenance level(additional tests must be performed).d. If GO appears, repeat this step.e. If E013 is displayed, test data cannot be analyzed due to weakbatteries or interrupted cranking during test. Correct weak bat-teries by charging them, then repeat this step. If E013 messagepersists, after two tests, notify next higher maintenance levelto perform compression test using pressure gage.3-207
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