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SERVICE AND ADJUSTMENTS
TO ADJUST TRANSMISSION CONTROL
LEVER (See Fig. 37)
A Hydrostatic Transmission is basically a hydraulic variable
displacement pump with a hydraulic motor which drives the
rear wheels_
In gear drive transmissions neutral is definite and has no gears
engaged, There are no gears in a hydraulic pump, Forward or
reverse motion is achieved by changing the flow of oil in the
pump and neutral is a narrow band between forward and re-
verse.
Neutral can be found by placing the shift ]ever in the neutral
gate,
A more _ps_tive _eut[a{ is to push down the brake-clutch pedal
which disengages the belt drive to the hydrostatic
transmission. If the operator leaves the tractor seat and the
brake-clutch pedal is not pushed all the way down and the
parking brake latched the engine will kiU,,
It may be necessary to make an adjustment to the
transmission control lever for true neutral position,
TO CHECK FOR TRUE NEUTRAL POSITION:
• Place transmission control lever in neutral gate. if tractor
continues to move, adjustment is required. Move transmis-
sion control lever to find the true neutral position, Leave
transmission control lever in true neutral position and turn
engine off.
TO ADJUST FOR TRUE NEUTRAL POSITiOkl:
Note the amount of adjustment required to move the
transmission control lever from the true neutral position to the
neutral gate. Note the location of the five adjustment washers
on the transmission control lever. Determine the proper
relocation of these washers to center the laver in the neutral
gate.
• Remove hair pin on end of transmission control lever.
@ Note position of spring Remove transmissi
control lever and spring.
e Relocate washers as needed to center transmission cont
lever in neutral gate
t Replace spring, transmission contro{ lever and hair pin
• Recheck adjustment for true neutral position°
If sufficient adjustment can not be made by re{ocating wash_
proceed with instructions below:
• Loosen two hex head screws and nuts located under ri!
rear fender_
• Move t_ansmission controllever to center o{ neutralgate
transmission control lever quadrant
• Tighten hex head screws and nuts
• Recheck adjustment for true neutra} position
TO CHECK TENSION OF TRANSMISSION CONTROL LEVE
• Start tractor and place transmission control lever in
forward speed position., if the lever creeps (moves) ou
position when climbing hills or under a load. adjustmen
required.
TO ADJUST TENSION ON TRANSMISSION CONTROL LEVI
• Turn tractor off
e Located under right rear frame is a hex nut This nut is u..
to adjust tension on transmission control lever
e Place wrench on hex nut and another wrench on bolt the
is on.
• While holding bo_t, tighten hex nut to add tension to tra
mission control lever
• Recheck adjustment
TRANSMISSION CONTROL LEVER
/
HEX NUT,
VIEW UNDER RIGHT REAR FENDER
Fig_ 37
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