Super Products MUD DOG, Operator'S Manual

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16 Super Products LLC Publication: 0004175
TROUBLESHOOTING
5
Remote Throttle Troubleshooting
Summary:
This document details the steps needed to troubleshoot
the Mud Dog Remote Throttle Control operation. This
document describes the mechanical and electrical
processes that occur when putting the truck into work
mode. Perform these steps to determine where there is a
problem.
1. Assure that all dash switches are off, especially
Cruise Control and Remote Control (a.k.a. Throttle
Enable). Start the truck with the transmission is in
Neutral or Park. Assure there are no chassis error
messages or that the truck needs to perform a
REGEN operation.
Note: Either the Remote Control (a.k.a. Throttle Enable)
switch OR the Rear Axle Disengage lever will enable the
Throttle Enable function, thereby giving engine throttle
control to the Mud Dog control system. The following
steps are for when each function is done separately.
Typically, both are enabled at the same time. Therefore,
the remote control switch is always turned on last.
2. To enable the hydraulic system, push in the clutch
pedal, wait for 3 to 5 seconds, and then engage the
Hydraulic PTO by enabling the PTO air shift switch or
lever. The PTO air pressure switch will close
confirming that the PTO is enabled. The PTO HYD
EN LED will light on the chassis module and the
hydraulic cooling fan will run. Release the clutch
pedal.
3. Keeping your foot off the clutch pedal, turn on the
dash Remote Control switch. The engine will go into
PTO mode and the engine RPM will increase slightly
as confirmation that the engine is in PTO mode.
Engine PTO can be disabled by pressing the clutch
pedal.
4. To enable the blower and disengage the rear axle,
push in the clutch pedal, wait for 3 to 5 seconds, and
then lift the Blower/Rear Axle Disengage lever
upward until the Rear Axle Disengage dash light is
illuminated. The vent door will open and the Vent
Door Open LED will light on the chassis module. The
Rear Axle Diseng LT and the Throttle Enable LEDs
will light on the Control Module.
5. Put the transmission into the desired gear and slowly
let out the clutch. The SS EN PROX SW and the
Throttle EN LED will light on the chassis module. The
dash may display a parking brake error message and
the speedometer may show road speed until engine
PTO mode is established. PTO mode will not enable
until a vacuum RPM increase or decrease is given.
Once in PTO mode, any error message will clear and
the speedometer will drop to zero.
Note:
The Vent Door Open EN LED or the Vent Door
Open LEDs will not be lit intially umtil the Vent Door
switch on the control panel or remote control is cycled.
6. If the PTO mode will not enable, determine if the
Throttle Enable LED is lit on the control module. The
Throttle Increase and Decrease LEDs may also be lit
or flashing.
7. Locate the throttle control relay, typically found
behind the fuse panel door. On it, there are four
LEDs. The LEDs are labeled 1 thru 4. They are for:
#1 = Throttle Enable
#2 = Throttle Increase
#3 = Throttle Decrease Throttle Enable LE
#4 = Fan Lock-up (no longer used)
Assure that Throttle Enable LED is lit.
8. If the Throttle Enable LED is lit, use the vacuum
function to assure that the increase and decrease
LEDs light when given a command to increase or
decrease vacuum blower RPM.
9. If the above functions do not operate properly, the
PTO mode can be enabled manually to test that the
engine PTO mode is working so as to eliminate a
problem with the engine or chassis portion of the
truck.
a. Return the truck back to road mode by
disabling the Remote Control switch, Hyd
PTO, and the Vacuum Blower/Rear Axle
disengage systems.
b. With the truck idling and your foot off the clutch
pedal, turn the cruise control switch on.
c. On the set/resume switch, press the resume
(lower) portion of the rocker switch for at least
two seconds. The engine RPM will increase
slightly to indicate that the engine is in PTO
mode. The accelerator pedal should not be
able to change engine speed.
d. Press and hold the set switch. The engine
RPM will increase, up to its maximum limit of
2000 RPM.
e. Press and hold the resume switch. The engine
RPM will decrease, down to its minimum idle
speed of 700 RPM.
f. Increase the RPM again up to 1000 RPM.
Turn the Cruise Control switch off. The engine
RPM should drop down to idle.
g. Turn the cruise control switch on again.
Increase the RPM to 1000 RPM, then depress
the clutch peddle. The engine RPM should
drop down to idle.