SECTION 3 – LUBRICATION AND MAINTENANCE
3-31
INCHING PEDAL CABLE ADJUSTMENT
(EHSS)
The inching pedal controls the dump valve, via a
control cable, for the hydraulic shuttle shift
transmission. When the inching pedal is
depressed
the dump valve releases all the
hydraulic pressure to
the transmission hydraulic
clutch packs. When the
hydraulic pressure is
released the forward or reverse
drive of the
tractor is interrupted.
Adjustment Procedure
NOTE:
check and adjust maximum inching pedal
travel before adjusting dump valve spool travel.
1. Slowly depress the inching pedal to full travel
①
.
2. Remove left steering column side panel and
measure dump valve spool travel.
3. Full inching pedal travel equates to a dump
valve
spool travel
②
, of 2mm+ 0.25.
4. If required, adjust the cable by loosening the
lock
nut
①
, on the cable at the turnbuckle
②
, and
rotate turnbuckle to lengthen or
shorten the
cable as required until the
specified amount of
cable travel is achieved.
NOTE:
If the cable travel is
less
than the
specified
amount, the dump valve will not be
pulled outward
enough to stop the oil flow to
the shuttle clutch with
the inching pedal fully
depressed, causing hard
shifting of the
synchronized (1-4) gears.
If the cable travel is
more
than the specified
amount, the dump valve will not back to specified
position, and can not increase the hydraulic
pressure by smooth inching operation with pedal.
In this case, jerky motion of the tractor, and
damage to the cable assembly may occur.
Содержание ST460
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