Maintenance; Air Motor Muffler - Graco 25C528 Instructions - Parts Manual

Maintenance

Maintenance Maintenance
Moving parts, such as an impeller blade, can cut
or amputate fingers. To reduce the risk of serious
injury, always shut off the agitator and disconnect
the air line before checking or repairing the agitator.
Before performing any maintenance procedure,
follow the Pressure Relief Procedure, page
Greasing the the Air Air Motor
Greasing Greasing the Air
After approximately 20 million revolutions or every
three to four months (whichever comes first), grease
the motor needle bearing. Recommended grease:
MOBILGREASE XHP 222 SPECIAL or equivalent
with minimum flash point temperature of 399.2° F
(204° C).
1. Follow the Pressure Relief Procedure, page
2. Remove the motor top cover (103).
3. Using a manual grease gun, push grease into
the 21RC fitting (102) until grease is seen below
the top washer (109a).
Air Motor Motor Muffler Muffler
Air Air Motor Muffler
Depending on the environment of the motor,
periodically check the cleanliness of the air motor
muffler. Dirty or clogged air mufflers result in
decreased motor efficiency and may cause the motor
to run irregularly. If the muffler is dirty or clogged,
replace it with a new muffler.
3A4792C
12.
Motor
Motor
Cleaning the
Cleaning Cleaning
For models For For models 25C528, models
Each week, clean any dried fluid from around the
bearing (6) area of the shaft (7) and inspect the
bearing for cracking or excessive wear.
For model For For model 25C529 model
Each week, clean any dried fluid from around the
bearing (18) and bracket (23) area of the shaft (21).
Lubricate with several drops of light oil.
12.
the Shaft Shaft
the Shaft
25C528, 25C533, 25C528, 25C533, 25M481 25C533, 25M481 25M481
25C529 25C529
Maintenance
13