Manitowoc 18000 - Page 301

Reference Only
Manitowoc Published 12-05-17, Control # 035-23 10-23
18000 SERIVCE/MAINTENANCE MANUAL TROUBLESHOOTING
10
Problem 21
No swing operation, but engine loads.
POSSIBLE CAUSES
Mechanical hang-up; Solenoid failure; Node fault; Wiring fault.
CHECKS
Check swing operation on digital display, swing screen.
When applicable switch is enabled…
Swing Lock - Out . . . . . . . . . . . . . . . . . . . . Packet #36, Bank 2 changed by 8
Swing Brake. . . . . . . . . . . . . . . . . . . . . . . . Packet #36, Bank 2 changed by 4
Yes No
Contact factory service department.
Repair or replace switch or wiring.
Contact factory service department.
Is 24 volts present at swing brake solenoid W74-B or
swing lock solenoid W74-F. (See Section 3 - Checking
Electrical Inputs/Outputs).
Check accessory accumulator pressure at swing lock or brake valve with a 0 – 1000 psi (70 bar) gauge.
Repair or replace swing
lock, brake or gearbox.
250 psi (17 bar) or more
250 psi (17 bar) or less
No
Replace damaged relief valve or pump.
Set high-pressure accumulator system to
500 psi (35 bar). Is 500 psi obtained?
Voltage No Voltage