Nilfisk-ALTO FLOORTEC R 870 Service Manual page 220

Service Manual – Floortec R 870
Drive System Motor Carbon Brush Check/Replacement (Continues)
5 Check the four carbon brushes (D) for wear. The carbon brushes are worn when:
• The contact with the motor armature is insufficient
• The contact surface is not integral
• The stroke is less than 0 47 in (12 mm)
• The spring is broken
6 Remove the two lateral carbon brushes of the drive motor, as shown below:
• Loosen the two screws (E)
• Remove the lateral cover (F)
• Loosen the screws (G)
• Remove the carbon brushes with the spring (H)
7 Check the two carbon brushes (H) for wear. The carbon brushes are worn when:
• The contact with the motor armature is insufficient
• The contact surface is not integral
• The stroke is less than 0 47 in (12 mm)
• The spring is broken
In this cases, replace all the six motor carbon brushes.
Assembly
8 Assemble the components in the reverse order of disassembly
E F E
P200243A
D
G H G
Wheel System, Traction
P200243
H
P200243B
220