Manitowoc 14000 - Page 281

Reference Only
Manitowoc Published 09-10-14, Control # 065-24 10-27
14000 SERVICE MANUAL TROUBLESHOOTING
10
PROBLEM 26
Crawler pin cylinder(s) will not extend or retract.
CHECKS
Check for 3,100 psi (214 bar) at valve test port while manually enabling a
crawler pin cylinder.
POSSIBLE CAUSES
Faulty control valve section; low pump pressure; bad pump; pressure
transducer bad; faulty counterbalance valve.
3,100 psi (214 bar) or More
Less than 3,100 psi (214 bar)
Repair or replace drum 1
(front drum) pump.
Does system pressure increase when a pin cylinder
handle is moved?
Yes No
Repair or replace lower accessory
pressure sender.
Repair or replace problem
cylinder(s).
Consult dealer/factory.
Does system develop any pressure?
Yes No