PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
ITEM TO BE
d. Place a small breaker bar, about 2 or 3 feet long,
across the two bolts to check backlash on the
spline drive coupling.
Although you can turn the engine by
applying constant pressure, the idea is to
detect any backlash generated between the
engine and transmission mating splines.
e. As with the power method, a good spline drive
coupling will produce a muffled sound, while a
bad spline drive coupling will produce a
distinctive metallic clanking sound.
a. The third type of inspection is the visual method.
Studs and nuts
1/4 inch) in
Fuel cut-off control at drivers position
must be pulled all the way out to prevent
engine from starting. Personnel could be
injured or killed if engine starts during
this PMCS check.
b. Two people are required to perform the visual
method. One will be inside the vehicle manually
jerking the engine. Meanwhile the second will
be under the vehicle observing the relative
motion between the flywheels clearance holes
and the spline drive rings studs and nuts.