TROUBLE SHOOTING
IMPORTANT PROCEDURE
When locating and correcting unit power or auxiliary
transmission troubles, a systematic procedure should be
followed.
Inspect Thoroughly During Disassembly:
Road test whenever possible. Mechanics usually get
It is poor practice to disassemble a unit as quickly as
second or third hand reports of trouble experienced with
possible without bothering to examine the parts as they
the unit and these reports do not always accurately
come down. It happens many times that a mechanic has
describe the actual conditions. Sometimes symptoms
completely disassembled a unit and failed to find the
seem to indicate trouble in the auxiliary; while, actually
cause of the trouble because he did not bother to
the trouble may be caused by the axle, propeller shaft,
examine the parts as they came apart. After the auxiliary
universal joints, engine or clutch. This is especially true of
is disassembled, check the lubricant for breakdown and
complaints on noise. Therefore, before removing
foreign particles which often reveal sources of trouble
transmission or related components to locate trouble,
that are overlooked during the disassembly.
always road test to check possibility that trouble may
exist in other closely associated units. If the mechanic
Repair or Replace Defective Parts:
can drive, road testing will be more effective; however,
Many times the parts or critical adjustments that
just riding with the driver can be very informative.
have caused the trouble are not replaced or corrected
because the mechanic will only inspect and replace parts
Check Functioning Prior to Disassembly:
that have failed completely. All pieces should be
If remote controls are used, a careful check of the
accurately examined because the broken parts are often
remote and connecting linkage to auxiliary must be
just the result and not the cause of the trouble. All parts
made. The remote units and linkage must be in good
that are broken or worn and no longer meet
working order if the auxiliary is expected to shift
specifications should be replaced. On large units, like an
satisfactorily.
auxiliary, it is suggested that a mechanic replace parts
that are worn to the extent that they do not have a long
Many times the answer to the trouble is apparent
service life remaining. This avoids another teardown on
when the unit is inspected prior to disassembly, but this
the unit in the near future. It is also good practice to
evidence is often lost when the parts are separated. If
make the changes or modifications recommended to
possible, check the unit prior to disassembly. Bear in
bring the auxiliary up to date and increase the service life
mind that a careful inspection of the unit should be made
of the unit.
as each disassembly step is performed.
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