Cycling Sequence Not Correct; Rapid Brush Wear Or Frequent Breakage - Piper PA-44-180 SEMINOLE Maintenance Manual

CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont)
Trouble
Cycling sequence not
correct.
Rapid brush wear or
frequent breakage.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
Cause
Crossed connections between
timer and deicers.
Brush block out of
alignment.
Slip ring wobbles.
2E8
Remedy
Check system wiring
against wiring diagram.
Check brush alignment.
Correct as required.
Check slip ring alignment
with dial indicator as shown
in Figure 30-2.
Revised: May 15, 1989
3 0 - 6 2 - 0 0
Page 30-28