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FORM NO. 56043055 / HR 2800, HR 2800C / BR 700, BR 700C
WHEEL DRIVE SYSTEM
POTENTIOMETER INSTALLATION AND ADJUSTMENT
The adjustment of the potentiometer is to set the drive pedal for a neutral drive motor operation. If the pot is not adjusted properly, the
machine will creep in either FWD or REV.
1
See Figure 4. Install the pot into the Housing Mount
(CC)
and tighten the attachment nut.
2
Connect loosely together both the Link Rod
(V)
to the Pedal
(W)
, and the Throttle Lever
(AA)
to the potentiometer input shaft. Then
tighten only the Link Rod
(V)
pedal mounting Hardware
(X)
. Note: Check the movement of the Foot Pedal
(W)
it must move freely
in both Fwd and Rev.
3
See Figure 5. Attach test leads from a volt/ohm meter (set meter on 0x100 scale) to the RED/GRN and VIO/BRN wire connection
points on the potentiometer to check it’s total resistance (example 4800 Ohms).
4
Next connect the ohmmeter test leads to the BLK/YEL and VIO/BRN potentiometer connection points. Then using a small
screwdriver, turn the shaft end on the pot to half the total resistance previously measured. Example: 4800 Ohms divided by 2 =
2400 Ohms. Then without turning the shaft, tighten the Screw
(Z)
and Nut
(Y)
to secure the setting at the Throttle Lever
(AA)
(Figure
4).
5
Follow steps 1-2 in reverse order (see Potentiometer Removal steps) to finish the installation. Then test-drive the machine for proper
speed and FWD/REV directional control.
RED/GRN
BLK/YEL
VIO/BRN
FIGURE 5
DRIVE PEDAL NEUTRAL ADJUSTMENT
If the drive pedal has been removed or replaced the neutral position for the pedal will have to be set. Follow the steps below to accomplish
this.
WARNING!
Disconnect the machine’s battery pack connector
(12)
before servicing.
1
Turn the master On/Off key switch
(33)
to the Off position, set the parking brake
(6)
and disconnect the battery pack
(12)
.
2
See Figure 4. Make sure Screw
(DD)
is loose and also the (4) Nuts
(EE)
as shown.
3
Press the Pedal
(W)
all the way Fwd then pull the front Plate Stop
(FF)
up so that the bottom of the pedal doesn’t touch the top of
the housing
(CC)
and then tighten both the Nuts
(EE)
.
4
Slide up the rear Stop Plate
(GG)
until it contacts the spring
(HH)
and tighten the (2) Nuts
(EE)
.
5
The pedal attachment Screw
(DD)
will center its self in the #2 slot in the drive pedal as shown. Tighten the Screw
(DD)
being careful
not to pull on the linkage connected to the previously adjusted potentiometer (see potentiometer section) and disturb (move) its
neutral setting. Note: A correctly adjusted drive pedal will have minimal amount of free play when selecting a drive pedal direction.
6
Reconnect the batteries and test the machine to make sure it does not “creep” forward or reverse when the pedal returns to neutral.
revised 2/05
Summary of Contents for Hydro-Retriever 2800 BR700
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