Universal M4-30 User Manual

Checking Commutator Wear
1. Check to see if the contact face of the brush is scored.
2. If scored, grind off with sand paper or on a lathe.
3. When the wear between the maximum and minimum diameters exceeds 0.4 mm,correct the
wear
to within 0.05 mm on the lathe. Allowable limit is not less than 2 mm smaller than the
reference
value of outside diameter.
Commutator diameter
Reference
value Allowable limit
28.0
mm 27.0 mm
1.1024 in.
1.0630 in.
161

Universal M4-30 Specifications

General

Brand	Universal
Model	M4-30
Category	Engine
Language	English