ST- 1 4
START I N G SYSTEM
-
Slarter
: )
�
4.
I N S PECT U N D E R C U T D E PTH
Check tha t the underC u t depth is
clean and free of foreign
malerials. Smooth oul
t
h
e edge.
Standard undercut depth:
0.7 mm 10.028 in.)
Minimum underc u t depth: 0.2 mm 10.008 in,)
If
the
underc u t depth is less
than minimum.
c
or
rect
jt with
a hack saw blade.
F ield Coil ( F i e l d Fra me)
1.
INSPECT FIELD COil F o R OPEN C I R C U IT
2.
Using a
n
ohmmeler, c heck I
h
a
l
t h e re
is continuily be
tween Ihe
lead wire and lield
coil brush lead.
I f
I
h
e
r
e
is no conlinuity.
replace Ihe field frame.
INSPECT F I E L D COIL FOR G R o U N D
Using
a n ohmmeter, c h
e
ck
t h a t there i s
no
c
o
n
t
i
n
u
i
t
y
bet
ween I h e field coil end
and field frame.
I f
t
h
er
e
i s continuity,
repair or
replace I h e field frame.
Brushes
I NSPECT BRUSH L E N GTH
Using
c a lipers. measure the brush
length
Standard lengt h :
20.6 mm (0.807 in,)
Minimum leng t h : 1 3.0 mm (0.5 1 2 in,)
I I the
l
e
n
g
t
h
is less than m i n i m um, replace the
brush
holder and f ield frame.
Brush Springs
I N S P E C T 8 R U S H S P R I N G LoAD
Take lhe pull scale rea d i n g the
instant t h e b r u s h spring
separates from
t
h
e
bru s h .
Spring installed loa d :
3.2 - 4.0 kg (7.1 - 8.8
I b ,
3 1 - 39 NI
I f the reading is not w i t h in
specification,
replace
the brush
springs.
