GENERAL TROUBLESHOOTING INSTRUCTIONS

TM5-241O-237-34

(1) Low power problems are generally caused by loose governor linkage or dirty

(2) Excessive oil consumption is generally caused by leaky gaskets or loose

line connections.

(3) Always check the easiest and most obvious things first. This simple rule

saves time and trouble.

Double check before disassembly. The source of most engine problems can be

traced to more than one part in a system. For example:

(1) Excessive fuel consumption may not be caused by the fuel pump alone.

Instead, the trouble could be a clogged air cleaner reducing air inflow or

a restricted exhaust passage, causing abnormally high back pressure.

(2) Engines very often are disassembled in search of a complaint and the real

evidence of the problem is destroyed. Check again to be sure an easier

solution to the problem has not been overlooked.

(3) Check all tags, service request forms, and vehicle logbook for repair

history. This may help lead to the source of problems.

Before attempting to correct a problem, diagnose the cause of the problem.

Do not allow the same failure to occur again.

2-5.

EXPLANATION OF COLUMNS

Visual or operational indication that something is

MALFUNCTION

wrong with the D7G tractor.

TEST/INSPECTION

Procedure to isolate the problem to a component or

system.

Procedure to correct problem.

CORRECTIVE ACTION

2-2