ENGLISH
SERVICE MANUAL
60
909 6424 000(3)2007-12
BR 601 / BR 651 / BR 751 / BR 751 C
DRIVE SYSTEM
DRIVE SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT (Machines up to January
2007)
Check
Drive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).
Empty the solution/washing water tank (59) with the tap (36).
Place the machine on a hoisting system (if available). Otherwise, drive the machine on a level fl oor.
Turn the ignition key (12) to "0".
Carefully lift the tank assembly (60).
Disconnect the battery connector (63).
Remove dust and debris from the drive system motor outer part (F), then disengage and remove the clamp (A) from the motor.
Lift the retaining springs (B) and remove the four carbon brushes (C).
Check the carbon brushes for wear. Replace the carbon brushes when: the contact with the motor armature is insuffi cient, the
carbon brushes are worn, the carbon brush contact surface is not integral, the thrust spring is broken, etc.
Replacement
If necessary, remove the nuts (D) and disengage the lead-in wires (E), then remove the carbon brushes.
Reset
Assemble the components in the reverse order of disassembly.
S301347
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.