MAINTENANCE MANUAL OF ENGINE
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6.1.2 Use and maintenance of the starter
1. Precautions for use of the starter
◆Frequently inspect connecting condition of in-
dividual parts and tightness of the cables.
◆Remove oxides on the cables and terminals,
clean the dust and oil stains deposited on the exter-
nal of the starter.
◆The starter should be preheated for 10-15 se-
conds during startup in cold season.
◆The starter can be operated for a short time,
and every time the startup time cannot exceed 5
seconds. If the starter cannot be started once, it
should be re-started after 45-60 seconds
◆After startup of the engine, it is required to
immediately release the starter switch, preventing
wear of the starter.
2. Maintenance after the starter is put into service
for one year:
◆Remove oil stains and contaminants in the
starter and at individual interfaces.
◆ Inspect whether the commutator surface is
smooth and clean, the brush is jammed in the brush
holder, the brush contacts the commutator well, and
brush height (the height cannot be less than 10mm
for QD1536S starter) is sufficient. If the commuta-
tor surface is slightly burned, it can be polished by a
No. "00" sandpaper. If it is burned seriously and the
out-of-circularity is more than 0.08mm, it has to be
re-machined, and polished by a No. "00" sandpaper.
◆Inspect the pressure of the brush return spring
(to be measured by a spring balance); the pressure
exerted by the return spring of the QD1536S stator
to the brush should be within 1.2-1.5kg, otherwise it
should be adjusted or changed.
◆Use a hair brush or rag to remove oil sludge
and dust on the stator、rotor and other parts again.
During installation, the helical spline of the rotor,
bearing bushings and bearing pores should be ap-
plied with lithium base lubricating grease.
◆Inspect working condition of the excitation
winding.
◆Inspect locking capability of the isolator.
◆Inspect condition of the contact plate and sta-
tionary contact of the electromagnetic switch; if it is
burned or has black spot, it should be ground to
flush by using a No. "00" sandpaper.
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