HOIST 800D
11-10
Published 5-27-2018 Control # 039-06
SERVICING THE MOTOR
1. Remove the hose (46, Figure 11-7) and counterbalance
block (42) from the motor assembly.
2. Remove the counterbalance valve (58) from the block
(42) and inspect the small metering hole located on the
side of the valve to make sure it is not obstructed. Also,
inspect the o-rings for damage and replace if necessary.
3. Motors and counterbalance valves are not serviceable in
the field. Return them to an authorized National Crane
distributor for service.
FIGURE 11-6
Wedge Socket
Specialty Clip
Specialty Wedge
METERING
HOLE
FIGURE 11-7
9464
Fo
r
Reference
Only
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