WHEEL DRIVE SYSTEM 71Service Manual – Advenger, 2800ST, 3800ST, BR 755, BR 855
Inspecting/Replacing the Drive Wheel Assembly Carbon Brushes
IMPORTANT!
To remove/replace/inspect the Carbon Brushes, observe the following:
1 The motor must come off of the machine.
2 The motor assembly must be kept vertical while being disassembled to prevent loss of gear oil.
WARNING!
Park the machine on a dry at surface, turn the main key
switch (J) to the Off position and disconnect the battery
pack at the red Anderson connectors inside the battery
compartment.
1 Follow the instructions in “Replacing the Drive Wheel
Assembly”.
2 Place the motor assembly upright, motor side up, as shown.
CAUTION!
To prevent gear oil from draining from the gearbox,
disassemble the motor with the Drive Wheel assembly in a
vertical position. If some oil is lost, drain completely and rell
the oil as indicated at the bottom of the page.
3 See Figure 37. Remove the four metric socket head cap
screws (A) securing the electric motor to the casting.
4 Use a hard piece of wood or a brass drift punch to tap the
motor mounting ange (3 notched locations (B)) to loosen.
5 Grip the motor/brake end bell and pull the motor (C) up and out
of its housing.
6 Inspect the 4 carbon brushes and springs. A new carbon brush
measures 3/4”. If less than 1/4”, replace.
7 Clean the foam lters, and blow out the motor.
8 If gear oil has been lost, drain and replace with 4.5856 oz (130
g) of Mobilgear 600 XP 150 or AGIP BLASIA 150 gear oil.
FIGURE 37
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