CHECKING AND ADJUSTING THE KNOCK-OUT
POSITIONERS
The
EXCEL’s
correct
knock-out
specifications are…
SLIDER
2700-2750 PSI @ THROTTLE ADVANCED
(will “advance” automatically during procedure)
SWEEP
2200-2250 PSI @ THROTTLE ADVANCED
(A second person will have to
hold depressed
a t-
adv button switch for sweep).
The
EXCEL’s
correct
system main relief
specification is
2900-2950 PSI @ THROTTLE
ADVANCED
“CHECKING” WHERE THE
EXCEL’S
SLIDER’S KNOCK-
OUT POSITIONER (”K-O”) IS PRESENTLY SET…
This procedure will identify the knockout-positioners
present
setting. (See separate procedure below to “adjust” a k-o.) You will use
the
system main relief’s
adjustment feature to identify where the k-o is
set. This relief is located at “body-mounted valve’s” inlet.
1- Move the ejector blade fully rearward (towards tailgate) and
leave it there.
2- Attach a 0-3000 psi glycerin filled gauge on a 2-foot hose with
the female coupler…to the gauge stem that exists at the body-
mounted valve’s inlet cover. <FIG 1>
3- Loosen jamb nut at main relief. Arbitrarily turn outward (CCW)
the main system relief 2 to 3 turns to lower its setting a great deal.
<FIG 2>
4- Diesel running; PTO to engaged; Throttle’s in-cab, master
rocker switch to ON (red band will show)
5- Go the tailgate; move the orange slider control lever to shifted
position (push for “up”) and let go of lever. <FIG 3>
The lever should
not
knockout to neutral because the main
relief is very low and therefore undercutting the K-O. (Many
people will call this “soaking” the relief.) The throttle should
be automatically advancing to 1200-1300RPM.
6- Go back to the body-mounted valve. Affix your eyes upon the
pressure gauge. Hold the gauge in one-hand so you can clearly
read it…. the slider is still “soaking”.
7- Begin slowly turning upward (cw) the main relief’s hex key
adjuster…slowly and smoothly. All the while,
keep your eyes
affixed
upon the gauge. Soon you will feel and hear the slider’s
knock-out kick to neutral. Memorize and jot down on paper the
gauge reading that occurred
at the very moment
it kicked-out.
This is the
present
slider k-o setting.
8- Repeat steps 3-7 again…until you have confidence your
“reading” is accurate…jot this down on paper
.
[
This procedure will also work for checking the
sweep’s k-o
, but a
second person must hold pressed a throttle-advance button switch.]
Important! Always remember to
return
the
main system relief
to
its correct specification of 2900-2950 PSI @ throttle advanced
when you are finished
identifying what the knock-out is set to.
(
Set “main relief” by locking
both
tailgate turn buckles and
shifting tailgate raise/lower lever to “raise” while holding
throttle
advanced
. See earlier topic in this manual.)
“RESETTING/ADJUSTING” THE
EXCEL’S
SLIDER’S K-O
POSITIONER
!DANGER!
Be sure diesel is
not
running,
ignition
keys
are in your pocket, and affix a
sign
on steering wheel that
reads “
do not start
”…
before
you enter the hopper or get
near the hopper’s blades!
Repeat these lockout/tag out steps each and every time
you must enter the hopper!
(Your shop may have a more
detailed LOCKOUT/TAGOUT procedure. If so, then perform
the
detailed
LOCKOUT/TAGOUT procedure.)
To make a
adjustment
(the checking above has shown k.o. to be “out
of spec”)…
1-Remove the small, rubbery hole plug from the end of the K-O
positioner’s bonnet (at the end face of it)…the “adjuster” is behind
it <FIG. 4> [Sec 02-pg 03]
2-Do the “checking” procedure (above) to find out “where” the K-O
positioner is presently set at. (CONT’D NEXT PAGE)
TOOLS REQUIRED…
5/32” ALLEN WRENCH AND 9/16” OPEN END FOR MAIN RELIEF;
3/32” ALLEN WRENCH FOR K.O. ADJUSTMENT; 3000PSI
GUAGE & HOSE ASSY
Fig.1
Fig. 2
Fig. 3
SLIDER
Summary of Contents for EXCEL Series
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