Grounding Of Field Coil; Checking Brush Spring Tension - Kubota D1102-B Workshop Manual

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(a) Spring hanger
(b) Attach the brush spring
in this method.
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Grounding of Field Coil

1 ) To check the conducti on . Place the tester probes onto the
f ield coil and yoke.
2) If either are conducti ng, repl ace.
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Checking Brush Wear
1) ) Check to see if the brush has worn to more than
2/3 below the standard dimensi ons.
2) I f wear exceeds the al l owable l i mi t, repl ace.
• Starter brush dimensions
Model Length
19 mm
D1102-B
0.7480 in.
D1302-B
D1402-B
V1502-B 19 mm
V1702-B 0.7480 in.
V1402-B
Ci)

Checking Brush Spring Tension

1) ) Measu re the tension with a new brush i n pl ace.
if
2) Replace the tension is un der the reference val ue.
Model Spring tension
01102-B
D1302-B
D1402-B
17.5 to 23.7N.
V1502-B
1,785 to 2,415 g
V1702-B
3.94 to 5.33 Ib
V1902-B
94
Should not
...
Thickness
Width
7 mm
12 mm
0.4724 in. 0.2756 in.
8 mm
25 mm
0.9843 in. 0.3150 in.
Reference value
Commutator diameter
11.8 N.
32.7 mm
1,200 g
1.2874 in.
2.64 lb
30.0mm
1.1811in.
KiSC issued 09, 2007 A