JLG 15/20MSP Service Manual - Manual (Page 80)

SECTION 4 - CONTROL COMPONENTS
4-24 – JLG Lift – 3121231
Motor Brush Installation 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 Installation
1. Brush Housing
2. Brush Housing Screws
3. Mark Front of Motor and Brush Housing for reference
when reassembling.
Brush Assembly Connections
1. Negative (–) Post 3. Brush Assemblies
2. Positive (+) Post 4. Spring Washer
Note: Length of wires to brush assemblies shown exaggerated for
illustrative purposes.
1
2
3
1
2
3
3
4
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