PROBLEM 11
Front or rear load drum will not raise load, but will lower load.
POSSIBLE CAUSES
Block up limit is opened; Pump is worn; Rated capacity indicator/limiter (RCL) circuit is open; Control
handle is worn; Maximum bail limit is opened; Speed sender is bad.
CHECKS
Check diagnostic screen D2. When applicable switch is enabled…
Bank 1 changed by 2 (front), 16 (left rear), or 64 (right rear) . . . . . . . . . . . Maximum bail limit
Bank 1 changed by 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block up limit
Bank 6 changed by 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RCL
All bank numbers increased
by number shown.
Any bank number not increased
by number shown.
Diagnostic DRUM 1, 2 or 3 screen (bank 1) approaches +100%
handle control with handle moved back.
Yes No
Check for problem and repair limit
switch operation, wiring, or fuse.
Repair or replace control handle.
Diagnostic DRUM 1, 2 or 3 screen (bank 2) approaches
+100% pump control with handle moved back.
Yes
No
Consult dealer/factory.
Is +2.3 or more volts present at
pump EDC with handle moved
back? (See Tes t
5.)
Replace pump EDC
or replace pump.
Repair or replace wiring
or consult dealer/factory.
Yes
No
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