SER 7175-R4
High-Pressure Grease Pump
Revision (2-13)
26
Alemite, LLC
Motor Overhaul
NOTE
: For information on motor removal,
refer to the section entitled
Remove and
Replace Motor
.
Disassembly
NOTE
: Refer to
Figure 11
for component
identification.
1. Remove Bushing (
7
) from Motor Housing (
18
).
• Use a flat-head screwdriver and small hammer.
• Remove the Bushing from the wire.
2. Unscrew Caps (
9
) from Brush Holder Assembly (
11
).
IMPORTANT: Record the direction of Brush
and Spring Assembly (10). Brushes wear
unevenly and must be replaced in the proper
direction in their respective Holder.
3. Remove each Brush and Spring Assembly from the
Brush Holder Assembly.
4. Remove Screws (
1
) that secure End Housing (
2
) to
Motor Housing (
18
).
• Remove the End Housing.
5. Remove Loader Spring Washer (
3
) from Armature (
5
).
6. Remove the Armature from the Motor Housing.
CAUTION
Use a puller to remove Bearings (4) from the Arma-
ture shaft. Alternate methods of removal can
cause damage to components.
7. Pull the Bearings from each end of the Armature shaft.
8. Remove Retaining Ring (
6
) from the Armature shaft.
9. Remove Screws (
14
) that secure Baffle (
15
) to the
Motor Housing.
• Remove the Baffle and Spacer (
13
).
10. Remove Terminal Wire Connectors (
17
) from each
Brush Holder assembly (
11
).
• Use needle-nose pliers.
11. Remove Field Assembly (
16
) from the Motor Housing.
12. Remove Washers (
12
) from each Brush Holder
assembly.
13. Remove Setscrews (
8
) that secure the Brush Holder
assembly to the Motor Housing.
14. Remove the Brush Holder assembly.
• Position an appropriate size socket on the assembly
from inside the Motor Housing. Place an extension
on the socket through the opposite opening in the
Housing. Tap the extension with a small hammer.
Clean and Inspect
1. Clean all metal parts in a modified petroleum-based
solvent. The solvent should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Closely inspect the teeth on the Armature shaft for
signs of wear.
• Make sure the teeth are free of nicks.
IMPORTANT: Should the teeth on the Arma-
ture shaft show excessive wear, inspect the
Gear Body for worn and/or misaligned
gears. Refer to section entitled Remove and
Replace Motor for details.
4. Discard any Brush and Spring Assembly (
10
) that is
less than 3/16 " [4.8 mm] long. Replace Brushes as a
set.
Assembly
NOTE
: Refer to
Figure 11
for component
identification.
1. Install and seat each Brush Holder assembly (
11
) into
Motor Housing (
18
).
• Make sure the grooved slots run parallel with the
length of the Motor Housing.
2. Install Setscrews (
8
) into the Motor Housing.
• Tighten the Setscrews securely.
3. Install Washers (
12
) onto each Brush Holder assembly.
• Make sure the flat side faces the bottom of the Motor
Housing.
4. Guide the main wire of Field assembly (
16
) through
the bottom access hole in the Motor Housing.
5. Position Terminal Wire Connectors (
17
) toward each
Brush Holder while installing the Field Assembly.
• Make sure the Field Assembly holes align properly
with the Motor Housing.
