© Jan 2022 4-6 0607SE Maintenance Manual
SERVICE AND GUIDELINES
2. The composite bearing should be replaced if the
following occurs:
• Frayed or separated fibers on the liner surface.
• Cracked or damaged liner backing.
• Bearing that have moved or spun in their
housing.
• Debris embedded in liner surface.
3. Pins should be replaced if any of the following is
observed (pin should be properly cleaned prior to
inspection:
• Detectable wear in the bearing area.
• Flaking, pealing, scoring, or scratches on the pin
surface.
• Rusting of the pin in the bearing area.
4. Reassembly of pins and composite bearing:
• Housing should be blown out to remove all dirt
and debris. Bearings and bearing housings must
be free of all contamination.
• Bearing/pins should be cleaned with a solvent to
remove all grease and oil. The composite
bearing is a dry joint and needs no lubricating.
• Pins should be inspected to ensure it is free of
burrs, nicks, and scratches which would
damage the bearing during installation and
operation.
APPLICATION OF
INSULATING SILICONE
GREASE TO ELECTRICAL
CONNECTIONS
Insulating silicone grease should be applied to all
electrical connections for the purpose of：
• Avoiding oxidization of the mechanical joints
between the male pins and female pins.
• Avoiding electrical failure due to low conductivity
between the pins in humid environment.
The following procedure should be observed to apply
the insulating silicone grease to the electrical
connections. The procedure applies to all plugged
connections outside of the power distribution box. The
silicone grease is not suitable for the connectors with
enclosed outer surface.
1. Prior to the machine assembling, apply silicone
grease around the male pins and female pins inside
the connectors to prevent oxidization. An injector
may be used for the convenience of operation.
NOTICE
The oxidization exceeding a certain period will
increase the resistance of the connector and
eventually lead to electrical failure.
2. Silicone grease should be applied to each electrical
cord that is exposed at the outside of the connector
to prevent short circuit. Besides, the joint between
the male and female connectors should also been
applied with silicone grease. Other joints that may
allow entry of water into the connectors, like the
area around the anti-pull buckle, should be properly
sealed as well.
NOTICE
Since the electrical conductivity of cleaning
solvent is superior to that of water, it is mostly
likely that this will occur when using pressure
cleaning method to clean the machine.
3. Silicone grease should be applied to each contact
of the connectors for battery case and charger.
NOTICE
The setting type sealant can be used to avoid
short circuit and keep the connections tidy, but it
will make the future removal of pins more difficult.
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