Thrush Aircraft S2R–T660 Maintenance Manual page 255

TROUBLE
Starter produces low Ng
10 - 13
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
PROBABLE CAUSE
Low battery
High resistance starter circuit
Defective starter motor
REMARKS
Check battery. Service
and recharge if
necessary
Check resistance of each
connection. Maximum
resistance at any
connection is 0.001 ohm.
Inspect connections for
evidence of heating.
Clean and tighten
connections as
necessary.
Check brushes, springs
and commutator.
Replace brushes and
springs and clean
commutator as
necessary.
Effective: 12/17/03