
Reference
Only
Manitowoc
Published 12-05-17, Control # 035-23
10-21
18000 SERIVCE/MAINTENANCE MANUAL
TROUBLESHOOTING
10
Bank number not increased
by number shown.
Problem 19
Luffing jib will not boom down, but will boom up.
POSSIBLE CAUSES
Boom maximum down limit opened; Pawl engaged; Pump is damaged; Block-
up limit open; 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 Down Limit . . . . . . . . . . . . . Packet #136, Bank 6 changed by 8
Luffing jib (Drum 6) Pump Pressure . . . . . Packet #38, Bank 2 changed by 32
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 forward?
Are zero volts at rest and 24 volts at full speed present
at pump EDC when control handle is moved forward?
(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 in forward directions, does DRUM 6 screen read 100% handle
command and 2.6 to 4.5 volts in lower direction?
Yes
No
Replace control handle
or repair wiring.
Содержание 18000
Страница 1: ...R e f e r e n c e O n l y Service Maintenance Manual Manitowoc 18000 ...
Страница 2: ...R e f e r e n c e O n l y ...
Страница 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Страница 210: ...R e f e r e n c e O n l y NOTES SKETCHES AND PHOTOGRAPHS ...
Страница 315: ...R e f e r e n c e O n l y ...
Страница 316: ...R e f e r e n c e O n l y ...