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M48 Tank
3
3.12. If adjustment is necessary, remove the cutting
deck.
3.13. Inspect the return to neutral cylinders, rods, and
bellcranks of the hydro control linkages.
• The bellcranks should pivot easily without too
much play.
• The rods should not be bent, and the rod ends
should not be loose.
NOTE: The rod end and jam nut at the rear of
each connector rod have left hand threads. A
lock washer is placed between the control input
arm on the hydro pump and the rod end.
NOTE: The rod end and jam nut at the front of
each connector rod have right hand threads. A
spacer fits between each control hub assembly
(bellcrank) and the front rod end that connects to
it.
• The return to neutral cylinders should both work
as advertised. See Figure 3.13.
NOTE: Remove the control console to gain
access to the return to neutral cylinder.
Figure 3.13
RETURN TO NEUTRAL
CYLINDER (RIGHT)
3.14. Loosen the jam nuts at each end of the hydro
control link rods, and rotate the rods to lengthen
or shorten them. See Figure 3.14.
3.15. Start the engine and release parking brake to
test, then turn the engine off to make the adjust-
ment.
3.16. Tighten the jam nuts against the rod ends when
adjustment is complete, and make a final test to
confirm.
3.17. After neutral control is correctly adjusted, set the
travel stops to achieve correct tracking and
adjust the lap bars for operator comfort.
See Figure 3.17.
NOTE: The clamp bolts for the lap bar mounting
handle can be used to adjust the amount of force
required to move the lap bars into or out of the
neutral slot.
Figure 3.14
Figure 3.17
STOP BOLT
LAP BAR TRAVEL
JAM
NUT
LAP BAR
MOUNTING
HANDLE
CLAMP
BOLTS