Use care when removing
retaining rings. Retaining rings
are under tension and can act as
projectiles when released causing
injury to personnel.
Note location and position of
retaining rings during removal.
Remove retaining rings (52) and (53) and
bearing (54) from front housing (35).
Studs may come out with
Hold six studs (46) and remove locknuts
(55) and washers (56) from front rotor (57).
Remove front rotor (57) from shaft (50).
Multimeter should read less than
3 ohms in Step (2). If multimeter
reads above the specified limit,
field coil is open and must be
Check for open field coil. Set multimeter to
x1 range and zero meter. Touch one
multimeter test lead to F+ (1) and other test
lead to F- (2) and measure resistance.
Multimeter should read infinity in
Step (3). If multimeter reads less
than infinity, field coil is
grounded and must be replaced.
Check for grounded field coil. Set
multimeter to x10k range and zero meter.
Touch one multimeter test lead to F+ (1) or
F- (2) and other to known good ground.