Z10079
Length
Length
Brush Holder Side
Field Frame Side
ST0019
P00303
Ohmmeter
No Continuity
--
STARTING
STARTER
ST--7
10. INSPECT BRUS H L E NG T H
Using vernier calipers, measure the brush length.
Standard length:
1.0 kW type: 13.5 mm (0.531 in.)
1.2 kW, 1.4 kW type: 15.5 mm (0.610 in.)
2.0 kW type: 15.0 mm (0.596 in.)
Minimum length:
1.0 kW type:
8.5 mm (0.335 in.)
1.2 kW, 1.4 kW type:
10.0 mm (0.394 in.)
2.0 kW type:
9.0 mm (0.355 in.)
If the length is less than the minimum, replace the brush holder
and field frame.
11 . INSPECT BRUS H S P RI NG L O AD
Take the pull scale reading the instant the brush spring sepa-
rates from the brush.
Spring installed load:
1.2 kW type:
13.7 -- 19.6 N (1.40 -- 2.00 kgf, 3.1 -- 4.4 lbf)
1.0kW, 1.4 kW type:
17.6 -- 23.5 N (1.80 -- 2.40 kgf, 4.0 -- 5.3 lbf)
2.0 kW type:
21.5 -- 27.5 N (2.20 -- 2.80 kgf, 4.9 -- 6.2 lbf)
Minimum spring installed load:
1.2 kW type:
9.8 N (1.0 kgf, 2.2 lbf)
1.0k w, 1.4 kW type:
11.8 N (1.2 kgf, 2.6 lbf)
2.0 kW type:
12.7 N (1.30 kgf, 2.7 lbf)
If the installed load is not within specification, replace the brush
springs.
12. INSPECT BRUS H HO L DE R I NS ULAT I O N
Using an ohmmeter, check that there is no continuity between
the positive (+) and negative (--) brush holders.
If there is continuity, repair or replace the brush holder.
CLICK HERE TO VIEW CHAPTER INDEX
Pages From Supplement
3RZ-F,3RZ-FE
