Adjustments; Transmission Control; Steering Lever Position Adjustment; Set Fsc Travel Limits (Stop) - Walker D21d Operator's Manual

Maintenance Instructions

ADJUSTMENTS

Transmission Control

The following instructions reflect the most current
transmission linkage configuration with a spring/
dampener connected to the steering lever (starting
S/N 11-109716) and the FSC using direct linkage
instead of a sliding fork disconnect (starting S/N
15-134121). Earlier units will need to use the trans­
mission control adjustment instructions from the
P/N 9000-30 Service Manual.
IMPORTANT: The proper adjustment of the trans­
mission control stops is essential for efficient op­
eration and life of the transmission. These stops are
properly adjusted at the factory and should only re­
quire readjustment if the transmission or related
control linkage is removed or changed.
NOTE: It would not be unusual for a new machine,
after initial 5 or 10 hours of operation, to begin to not
travel straight (this is due to the break-in of the trans­
missions). In this case, proceed to Straight Ground
Travel Adjustment - Step 5.
IMPORTANT: The following adjustment procedures
are sequential. Check and adjust each function in
the order given.
Steering Lever Position Adjustment - Step 1
NOTE: For proper operation, the steering levers
should be adjusted to sit evenly using the following
procedure.
1. Examine the steering levers to make sure they
are parallel front to back in relation to one an­
other. If they are not equal, adjust accordingly.
(The handles may or may not be even at this
point, see Steering Handles adjustment this
section.)
NOTE: The LH steering lever is non-adjustable.
This procedure will require adjustment of the RH le­
ver to make it even with the LH lever.
84
Lever Alignment
Speed Control Stop
Jam Nut
Set Screw
Access Hole
Lever Position Adjustment
2. Adjust the position of the RH Steering lever us­
ing the adjustment screw on the Speed Control
Stop as shown in the Lever Position Adjust-
ment illustration. The screw is adjusted with the
tractor body in the normal operating position
(not raised) using an access hole in the front
panel. Loosen the jam nut and adjust the lever
position to match the LH lever position. Tighten
jam nut after the adjustment.
Set FSC Travel Limits (Stop) - Step 2
1. Move the Forward Speed Control (FSC) lever to
the most FORWARD position.
2. Check clearance of the RH and LH steering le­
ver actuator arms with the frame and adjust
forward stop bolt so each lever clears the
frame by at least 1/16 in. (1.6 mm). Clearance of
the arm to the frame should be checked while
applying pressure back on the arm to remove
any slack in the linkage.
ADJUSTMENTS
Levers should sit
parallel to each other
T-Handle
Allen Wrench