TM 5-3810-307-24-2-2
Valve Tappets - Removal (0-54)
Remove the valve tappets. The engine can be rotated
to allow easy access to the tappets.
NOTE
Refer to Component Section 4 for inspection
procedures.
Lube Pump - Removal (0-55)
Measuring Backlash (0-56)
Position the indicator on a tooth of the lube pump gear.
Note the lube pump gear backlash. Mark the lube
pump gear and idler gear for additional analysis if the
limits are exceeded.
Lube Pump Gear Backlash Limits (A)
mm
in
0.076
MIN
0.003
0.330
MAX
0.013
Lube Pump Gear Backlash Limits (A)
mm
in
0.076
MIN
0.003
0.330
MAX
0.013
NOTE
Prevent movement of the adjoining gear
when checking backlash or the reading will
be the total of both gears.
Position the indicator on a tooth of the lube pump idler
gear.