Bank number not increased
by number shown.
Problem 18
Luffing jib will not boom up, but will boom down.
POSSIBLE CAUSES
Maximum up limit 1 or 2 is tripped; Pawl engaged; Pump is damaged; Control
handle is worn; Node fault; Speed encoder is damaged.
CHECKS
See Crane Diagnostics topic in Section 3 to find CAN bus packet numbers.
When applicable switch is enabled…
Maximum Jib Working Up Limit . . . . . . . . . Packet #136, Bank 6 changed by 16
Maximum Jib Maximum Up Limit . . . . . . . . Packet #136, Bank 6 changed by 32
Luffing jib (Drum 6) Pump Pressure. . . . . . Packet #38, Bank 2 changed by 16
Bank number increased
by number shown.
Yes
No
Out In
Yes No
Yes
No
Yes
No
Does Packet #39, bank 2 (luffing jib pawl) change by
32 when moving brake switch?
Check for problem. Repair limit
switch, wiring, or circuit breaker.
Visually check pawl.
Check pawl operation.
Repair or replace switch
or wiring to controller.
Does DRUM 6 screen approach 100% pump control with handle
moved fully back?
Are zero volts at rest and 24 volts at full speed
present at pump EDC when control handle is
moved back? (See Section 3 - Checking
Electrical Inputs/Outputs).
Consult dealer/factory.
Repair or replace wiring or consult dealer/factory.
Replace pump EDC.
Repair or replace pump.
Can luffing jib pump be manually stroked down?
(See Section 2 - Manual Override Tests).
When moving luffing jib handle fully back, does DRUM 6 screen read 100% handle command and 0.5
to 2.4 volts in raise direction?
Yes No
Replace control
handle or repair wiring.
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