Modular Brush Assemblies; Brush Module Replacement; Measuring Bush Assemblies - Piper PA-44-180 SEMINOLE Maintenance Manual

MODULAR BRUSH ASSEMBLIES.

BRUSH MODULE REPLACEMENT.

Brush wear may be measured as shown in Figure 30-7. The X-dimension given (in inches) indicates when the
brushes must be replaced.
Brushes are not offered individually as replacements. When a brush wears out, the
module containing it should be replaced
1. Remove the modular brush assembly from the aircraft by removing the attachment hardware and
disconnecting the engine wire harness.
2. Remove assembly screws and separate modules and spacers.
The part number of each module is etched into the surface of the plastic housing;
replace with the same part number module.
2030
DURING MEASUREMENT ONLY 1/16 INCH OF
BRUSH SHOULD BE ALLOWED TO PROTRUDE
FROM BRUSH BLACK. THIS IS THE NORMAL
POSITION OF THE BRUSH WHEN INSTALLED ON
THE AIRCRAFT.
MODULAR BRUSH ASSEMBLIES
Modules having brushes with rods
Modules having brushes without rods.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— Note —
— Note —
X DIMENSION
MUST REPLACE
17/64 "
17/64 "
Figure 30-7. Measuring Bush Assemblies
2E15
A407
3 0 - 6 6 - 0 1
Page 30-35
Revised: May 15, 1989