Clean all other components with drycleaning solvent and wire brush.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and personal protective equipment (goggles/shield, gloves, etc). Failure
to comply may result in injury or death to personnel.
Dry all parts with compressed air.
Inspect solenoid rubber boot for cracks or tears. If boot is damaged, replace solenoid.
Inspect brushes for excessive wear. Brushes less than 0.625 in. (15.875 mm) long must be replaced.
Inspect brush holders for heat damage or defective springs. Replace faulty brush holders.
Inspect all insulation washers and bushings. Broken, cracked, or burned insulators must be replaced.
Inspect nose bushing for wear. If inside diameter is greater than 0.735 in. (19.1 mm), bushing must be
Inspect commutator end housing bushing for wear. If inside diameter is greater than 0.756 in. (19.202
mm), bushing must be replaced.
Inspect shift housing bushing for wear. If inside diameter is greater than 0.878 in. (22.301 mm), bushing
must be replaced.
Inspect shift shaft and shift housing. If grooves are found in shift shaft, or pivot hole in shift housing is not
round, replace shift shaft or shift housing.
Inspect gear teeth and splines on drive assembly for wear or damage. If gear rotates in both directions, or
does not move freely in and out of assembly, replace gear.
Check splines on armature shaft for wear or damage.
Inspect armature commutator surface. If surface is pitted, scored, burned, or coated with hard carbon or
oil, replace armature.
Measure armature commutator surface. If commutator diameter is less than 2.063 in. (52.4 mm), replace
Inspect inside of field ring and field coil. If burn marks are found, replace field coil. If pole pieces and
armature show wear due to rubbing, commutator end housing, shift housing and nose housing bushings
must be replaced.