Manitowoc 14000 Service And Maintenance Manual

Reference Only
Manitowoc Published 09-10-14, Control # 065-24 1-63
14000 SERVICE MANUAL INTRODUCTION
1
Cab Tilt
See Figure 1-32 and Figure 1-36 for the following procedure.
Cab tilt cylinder is attached to cab frame. During normal
operation the cab tilt solenoid is motor spooled where both
cylinder ports and tank port of valve spool section are
connected in center position. The accessory system
pressure sender monitors accessory system pressure. Cab
tilt switch is on right side console in operator’s cab.
When top of cab tilt switch (raise front of cab) is pushed and
held, an input voltage is sent to node 1 controller. Node 3
controller sends a 24 volt output to enable cab tilt up
solenoid HS-21 and shifts valve to up position. Node 4
controller sends a variable 0 to 24 volt output to enable low-
pressure side of drum 1 pump EDC.
Hydraulic fluid pressure at approximately 3,000 psi (204 bar)
flows to cab tilt upper accessory valve. Hydraulic fluid exits
valve and enters free-flow check valve before entering piston
end of cylinder, extending cylinder rod to raise the cab front.
Hydraulic fluid from rod end of cylinder exits upper accessory
valve and returns to tank. When cab tilt switch is released,
node 3 controller sends a 24 volt output to disable cab tilt up
solenoid HS-21 and shifts valve to center position. Node 4
controller sends a variable 0 to 24 volt output to disable low-
pressure side of drum 1 pump.
When bottom of cab tilt switch (lower front of cab) is pushed
and held, an input voltage is sent to node 1 controller. Node 3
controller sends a 24 volt output to enable cab tilt lower
solenoid HS-20 and shifts valve to lower position. Node 4
controller sends a variable 0 to 24 volt output to enable low-
pressure side of drum 1 pump EDC.
Hydraulic fluid pressure at approximately 3,000 psi (204 bar)
flows to cab tilt upper accessory valve. Hydraulic fluid exits
valve and enters rod end of cylinder, retracting cylinder rod to
lower cab front.
Hydraulic fluid from piston end of cylinder enters free-flow
check valve before entering upper accessory system valve
and returns to tank. When cab tilt switch is released, node 3
controller sends a 24 volt output to disable cab tilt up
solenoid HS-20 and shifts valve to center position. Node 4
controller sends a variable 0 to 24 volt output to disable low-
pressure side of drum 1 pump.

Manitowoc 14000 Specifications

General

Brand	Manitowoc
Model	14000
Category	Construction Equipment
Language	English