Riding the Clutch Pedal
Riding the clutch pedal is destructive to the clutch,
since partial clutch engagement permits slippage, gen-
erating excessive heat. Riding the clutch pedal will also
put a constant thrust load on the release bearing, which
can thin out the lubricant. Release bearing failures can
be attributed to this type of misuse.
Holding the Vehicle on an Incline With a
Slipping Clutch
A slipping clutch accumulates heat faster than it can be
dissipated, resulting in early clutch failures. Never use
the clutch as a hill holder.
Coasting With the Clutch Released (Pedal
Depressed) and the Transmission in Gear
Coasting with the clutch released and the transmission
in gear can cause high driven disc rpm through multipli-
cation of ratios from the final drive and transmission.
WARNING
Do not coast with the clutch released (pedal de-
pressed) and the transmission in gear. High driven
disc rpm could cause the clutch facing to be thrown
off the disc. Flying debris could cause injury to per-
sons in the cab.
Engaging the Clutch While Coasting
Engaging the clutch while coasting can result in tremen-
dous shock loads and possible damage to the clutch,
as well as to the entire drivetrain.
Reporting Erratic Clutch Operation Promptly
Reporting erratic clutch operation as soon as possible
will give maintenance personnel a chance to inspect the
clutch components.
CAUTION
Operating the vehicle with incorrect clutch pedal
free-travel could result in clutch damage. See Group
25 of the
Cargo Workshop Manual
for free-pedal ad-
justment procedures and specifications.
Clutch Adjustments
Some clutches have an internal adjustment. See the
applicable section in Group 25 of the
Cargo Workshop
Manual
for clutch adjustment procedures and specifica-
tions.
CAUTION
Operating the vehicle with the clutch incorrectly ad-
justed could result in clutch or clutch brake failure.
Clutches, Rear Axles, and Steering
6.2
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