12
Neutral Adjustment
If the tractor creeps forward or back when the hydro-
static control lever is in neutral, adjust as follows:
CAUTION
Always stop engine before leaving operator's
position. Do not perform adjustment with en-
gine running.
1. Park tractor on level ground, make sure hydro-
static control lever is firmly seated in the neutral
notch of quadrant, stop engine and set parking
brake.
2. Raise the seat deck and check if the pump control
arm roller (E, figure 3-1) is exactly centered with
the centering mark (D). If not, loosen bolt (C) and
move the control cam (B) until centering mark (D)
is centered on roller (E). Tighten the bolt (C).
3. Lower the seat deck, get in operator's seat, start
engine and release parking brake. If tractor still
creeps with hydrostatic control lever in neutral,
note which direction it creeps and proceed with
next steps.
4. Stop the engine, set parking brake, and raise seat
deck. Loosen the jam nut (H) on end of cam pivot
shaft (G). If tractor creep had been in reverse,
turn adjusting nut (I) 1/8 to 1/4 turn clockwise
when viewed from right side of tractor. If tractor
creep had been forward, turn nut 1/8 to 1/4 turn
counterclockwise. Lock jam nut, lower seat deck,
get in operators seat, start engine, and release
parking brake. If tractor still creeps, repeat step 4,
turning nut (I) a little at a time until no creep
occurs.
Figure 3-1. Hydrostatic Neutral Adjustment
A. Control Strap
B. Control Cam Assy. F. Pump Control Arm
C. Bolt G. Cam Pivot Shaft
D. Centering Mark H. Jam Nut
E. Pump Control Arm Roller I. Adjusting Nut
Section 3.
Large-Frame Tractors with Belt Driven - Sundstrand Model 15 Hydrostatic
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