JLG DVSP Series Service Manual - Manual (Page 81)

SECTION 4 - CONTROL COMPONENTS
3121136 – JLG Lift – 4-23
Once brush housing has been removed, inspect the rotor
commutator for excessive wear before installing a new brush
set.
The rotor commutator surface when new, is approximately
1/8 in. (3mm) in thickness.
Brush Housing Final Assembly Tips
It is easier to install the brush housing assembly by sliding
the rotor assembly completely out of the other end of the
motor housing, then attach the brush housing first. After the
brush housing is installed look into the motor housing from
the opposite end to check that the positive (+) post wires
and static winding wires are positioned not to block the
holes for the motor mounting bolts, and are properly posi-
tioned around the motor housing.
After final assembly of the brush housing check that all
brush terminal screws are tight and the brush springs are
positioned properly before mounting the motor to the pump/
motor end head.
New Brush Installation
1. Brush Terminal Screw 4. Brush Spring
2. Brush
5. (See Installation Note Below)
3. Brush Holder
Installation the same for all four (4) brush assemblies.
Note: Using a clean towel, push each brush (2) up into it’s holder
(3), slide the spring (4) over the side of the brush. This will hold
each brush in place and allow them to clear the rotor commutator
during reassembly.
Clean the rotor commutator with a non-conductive electrical
cleaner before assembling the brush housing to the motor hous-
ing.
1
2
3
4
5
Brush Final Positioning
IMPORTANT
ONCE THE ROTOR ASSEMBLY IS IN PLACE, REMEMBER TO
PUSH EACH BRUSH DOWN UNTIL THE BRUSH FACE IS IN CON-
TACT WITH THE COMMUTATOR ON THE ROTOR SHAFT AND THE
BRUSH SPRING IS PUSHING DOWN ON TOP OF THE BRUSH.