Briggs & Stratton Twin Cylinder L-Head, Руководство по ремонту

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10
Inspect Armature Commutator
The armature commutator may be cleaned with fine
sandpaper. DO NOT use emery cloth. Commutator
may be machined to no less than 1.230” (31.24 mm),
Fig. 26.
Slots between commutator bars should be cleaned
with a hack saw blade after cleaning or machining,
Fig. 26. The slots can also be cleaned using an aerosol
carburetor cleaner or compressed air.
The armature should be checked for shorts with a
growler.
Inspect Brushes
The brushes should be checked for proper seating,
weak brush springs, dirt, oil or corrosion. Brush spring
pressure should be strong enough to ensure good
brush contact with armature. Check to be sure brushes
are not sticking in their holders.
Minimum brush dimension is 1/4” (6 mm), Fig. 27.
Fig. 26 – Cleaning Commutator
PIECE OF BROKEN
HACKSAW BLADE
Fig. 27 – Checking Brushes
NORMAL
LENGTH, NEW
1/4” (6 mm)
OR LESS REPLACE
Replace Brushes
Three different style brush end caps are used. Refer to Fig. 28, Fig. 29 and Fig. 30 for correct location of brushes and
brush leads. Note order of assembly for insulators, washers and screws or nuts.
Fig. 28 – Flat Coil Spring Fig. 29 – Compression Spring Fig. 30 – Compression Spring
NOTE ROUTING OF WIRES
POSITIVE
BRUSHES
NEGATIVE
BRUSHES
NOTE ROUTING OF WIRES
POSITIVE
BRUSHES
NEGATIVE
BRUSHES
POSITIVE
BRUSHES
NEGATIVE
BRUSHES
NOTE ROUTING OF WIRES