Motor Brush Replacement - Graco ULTRA MAX 1095 Instructions-Parts List Manual

Motor Brush Replacement

NOTE: Replace brushes worn to less than 1/2 in. Note
that brushes wear differently on each side of mo-
tor, so check both. Brush Repair Kit 220–853 is
available. A new spring clip, 1 10–816, may be
purchased separately.
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 7.
NOTE: Read General Repair Information on page 16
before doing this procedure.
1. Relieve pressure.
2. Remove motor shield (54). Remove inspection
covers (B) and gaskets on each side of motor.
See Fig. 11.
54
Fig. 11
3. Push in spring clip to release hooks from brush
holder. Pull out spring clip. See Fig. 12.
SPRING
Fig. 12
4. Loosen brush lead terminal screw. Pull brush lead
away, leaving motor lead terminal in place. Re-
move brush and spring. See Fig. 14.
B
HOOK
BRUSH
SPRING CLIP
110–816
5. Inspect commutator for excessive pitting, burning
or gouging. A black color on commutator is normal.
Have commutator resurfaced by a qualified motor
repair shop if brushes seem to wear too fast.
CAUTION
When installing the brushes, follow all steps carefully
to avoid damaging the parts.
6. Install new brush so lead is in long slot of holder.
See Fig. 13.
NOTE: SPRING MUST COIL
IN THIS DIRECTION
Fig. 13
7. Slide terminal under terminal screw washer and
tighten screw. Be sure motor lead is still connected
at screw. See Fig. 14.
SPRING
BRUSH
Fig. 14
8. Place spring on brush as shown in Fig. 13.
9. Install spring clip and push it down to hook short
slots in housing. See Fig. 13.
10. Repeat for other side.
BRUSH HOLDER
SHORT SLOT
LONG SLOT
BRUSH
SPRING
CLIP
SPRING CLIP
BRUSH LEAD
TERMINAL SCREW
MOTOR LEAD
TERMINAL