Blizzard B74C Operator And Parts Manual page 40

SHIELD
Note: Shield bearings must be greased every 8 working hours.
OM 0410SB-A
MAINTENANCE
AVOIDABLE DAMAGES
 Excessive wear of shield
bearings.
 Chain moving or failure.
 Shield cone damaged.
 Shield
tubes damaged
(deformed and split at one
side).
POSSIBLE CAUSES
 Insufficient lubrication.
 Incorrect chain mounting.
 Shield interfering with
implement.
 Shield interfering with
implement.
 Incorrect chain mounting.
 Shield cone in contact with
components on the tractor
and/or implement.
 Excessive angularity.
 Shields in contact with
components on the tractor
and/or implement.
 Shield tubes overlap too
short or no overlap at all
with extended driveline.
38
CORRECTIVE ACTIONS
 Follow lubrication instructions.
 Mount chain to allow
maximum angularity.
 Avoid contact of the shields
with fixed parts of the machine
or tractor.
 Replace shield bearings.
 Avoid contact of the shields
with fixed parts of the machine
or tractor.
 Mount chain to allow
maximum angularity.
 Replace defective parts.
 Eliminate interference
between Shield cones and any
part on the tractor and/or
implement.
 Avoid excessive angle during
cornering or when lifting or
lowering the implement.
 Replace damaged Shield
cones.
 Eliminate interference
between Shield cones and
any part on the tractor and/or
implement.
 Replace damaged tubes.
 Adjust Shield tubes length
with longer tubes.