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

Maintenance Instructions

Adjustments

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
transmission 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 oper-
ation and life of the transmission. These stops are
properly adjusted at the factory and should only
require readjustment if the transmission or related
control linkage is removed or changed.
NOTE: It would not be unusual for a new machine,
after the initial 5 or 10 hours of operation, to begin
to not travel straight (this is due to the break-in of
the transmissions). In this case, proceed to
Straight Ground Travel Adjustment - Step 5 on
page 90.
IMPORTANT: The following adjustment proce-
dures 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
another. If they are not equal, adjust accord-
ingly. (The handles may or may not be even
at this point, see Steering Handles on page
93.)
NOTE: The LH steering lever is non-adjustable.
This procedure will require adjustment of the RH
lever to make it even with the LH lever.
88
Lever Alignment
Speed Control Stop
Jam Nut
Set Screw
Access Hole
Lever Position Adjustment
2. Adjust the position of the RH Steering lever
using the adjustment screw on the Speed
Control Stop as shown in the Lever Position
Adjustment illustration. The screw is adjust-
ed with the tractor body in the normal operat-
ing 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
lever 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.
D21d
Levers should sit
parallel to each other
T-Handle
Allen Wrench