Service and Maintenance Manual
Service and Maintenance Manual - JLG
Service and Maintenance Manual - JLG
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SECTION 2 - SERVICE PROCEDURES<br />
Once brush housing has been removed, inspect the rotor<br />
commutator for excessive wear before installing a new<br />
brush set.<br />
The rotor commutator surface when new, is approximately<br />
1/8 in. (3mm) in thickness.<br />
1<br />
2<br />
3<br />
4<br />
Brush Housing Final Assembly Tips<br />
It is easier to install the brush housing assembly by sliding<br />
the rotor assembly completely out of the other end of the<br />
motor housing, then attach the brush housing first. After<br />
the brush housing is installed look into the motor housing<br />
from the opposite end to check that the positive (+) post<br />
wires <strong>and</strong> static winding wires are positioned, not to block<br />
the holes for the motor mounting bolts, inside the motor<br />
housing.<br />
After final assembly of the brush housing check that all<br />
brush terminal screws are tight <strong>and</strong> the brush springs are<br />
positioned properly before mounting the motor to the<br />
pump/motor end head.<br />
5<br />
New Brush Installation<br />
1. Brush Terminal Screw 4. Brush Spring<br />
2. Brush 5. (See Installation Note Below)<br />
3. Brush Holder<br />
Installation the same for all four (4) brush assemblies.<br />
Note: Using a clean towel, push each brush (2) up into it’s holder<br />
(3), slide the spring (4) over the side of the brush. This will hold<br />
each brush in place <strong>and</strong> allow them to clear the rotor commutator<br />
during reassembly.<br />
Clean the rotor commutator with a non-conductive electrical<br />
cleaner before assembling the brush housing to the motor housing.<br />
Brush Final Positioning<br />
ONCE THE ROTOR ASSEMBLY IS IN PLACE, REMEMBER TO<br />
PUSH EACH BRUSH DOWN UNTIL THE BRUSH FACE IS IN<br />
CONTACT WITH THE COMMUTATOR ON THE ROTOR SHAFT<br />
AND THE BRUSH SPRING IS PUSHING DOWN ON TOP OF<br />
THE BRUSH.<br />
2-14 – JLG Lift – 3120875