Derby LC-9, Руководство оператора

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Troubleshooting, Adjustment & Service
NEUTRAL ADJUSTMENT
If the tractor “creeps” while the ground speed control
levers are locked in NEUTRAL, than it may be neces-
sary to adjust the control linkage.
NOTE: Perform this adjustment on a hard, level surface
such as a concrete floor.
1. Disengage the PTO, engage the parking brake and
turn off the engine.
2. Loosen the jam nut (B, Figure 35) and turn the
adjustment linkage (A, Figure 35) to adjust. If the
machine creeps forward, turn the linkage CLOCK-
WISE (while standing at the rear of the machine, fac-
ing forward), if the machine creeps backward, turn
the linkage COUNTER-CLOCKWISE.
3. Lock the jam nut (B) when neutral is achieved.
NOTE: This adjustment should not be performed while
the machine is running. It may take several attempts to
achieved neutral, depending upon how much the
machine creeps.
DAMPENER FORCE & NEUTRAL
SPRING RETURN ADJUSTMENT
These adjustments will taylor the “feel” of the control
levers to the operator.
Each of the dampeners and springs (C and A, Figure
36) has three adjustment holes (D and B, Figure 36).
The farther up the dampener and spring are placed, the
more effective the dampener becomes and the more
spring force will be felt by the operator while driving for-
ward.
The closer together the dampeners and springs are
placed, the slower the machine will return to NEUTRAL
when the control levers are released. The farther apart
the dampeners and springs are placed, the faster the
machine will return to neutral.
NOTE: These adjustments must be made to BOTH
sides at the same time, and be placed in the SAME
position to one another.
A
B
Figure 35. Neutral Adjustment
A. Control Linkage
B. Jam Nut
Figure 36. Dampener & Return Spring Adjustment
A. Neutral Return Spring C. Dampener
B. Spring Adjustment Holes D. Dampener
Adjustment Holes
A
D
C
B
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