Manitowoc Published 05-26-17, Control # 238-02 3-7
MLC165-1 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
SOLENOID VALVE IDENTIFICATION
Each hydraulic solenoid valve (HS) is assigned a number (#)
for troubleshooting. The wire number of each solenoid can
be found in the electrical schematics.
Each HS-# is determined as follow: the first number is the
universal node number and the second two numbers are the
digital output assigned to that solenoid on that node. For
example, HS-311 = Node 3, Digital Output 11 (DO11).
HS # Description Wire #
HS-302 Main Valve Combined Flow 33D
HS-303 Horse Power Override 33F
HS-304 Load Sense Shifting 33H
HS-308 Drum 2 Motor Control 36D
HS-309 Drum 1 Motor Control 36F
HS-311 Drum 4 Up 34B
HS-312 Drum 4 Down 34D
HS-313 Drum 1 Up 34F
HS-314 Drum 1 Down 34H
HS-315 Drum 2 Up 34R
HS-316 Drum 2 Down 34P
HS-317 Drum 3 Up 34M
HS-318 Drum 3 Down 34S
HS-319 Select Handle 3 to Drum 4 Up 34U
HS-320 Select Handle 3 to Drum 4 Down 34W
HS-321 Select Handle 4y to Drum 1 Up 34Z
HS-322 Select Handle 4y to Drum 1 Down 34b
HS-323 Select Handle 4y to Drum 3 Up 34d
HS-324 Select Handle 4y to Drum 3 Down 34f
HS-407 Accessory Enable 46B
HS-409 Swing Control Right 46F
HS-410 Swing Control Left 46H
HS-411 Travel Pilot 44B
HS-412 Drum 2 Brake 44D
HS-413 Drum 1 Brake 44F
HS-414 Swing Brake 44H
HS-415 Travel High Speed 44R
HS-416 Drum 4 Brake 44P
HS-417 Drum 3 Brake 44M
HS-418 Drum 4 Pawl Out 44S
HS-419 Drum 4 Pawl In 44U
HS-420 Drum 1 Pawl Out 44W
HS-421 Drum 1 Pawl In 44Z
HS-422 Drum 3 Pawl In 44b
HS-423 Drum 3 Pawl Out 44d
HS-424 Pilot Pressure Unloading 44f
HS-502 Accessory Pump Pressure Control 53D
HS-503
Accessory Pump Displacement
Control
53F
HS-504 Cooler Fan Pumps Control 53H
HS-505 Rigging Winch Out 53P
HS-506 Rigging Winch In 53R
HS-507 Free Fall Drum 1 Enable 56B
HS-508 Free Fall Drum 2 Enable 56D
HS-509 Auto Grease Control 56F
HS-511 Counterweight Pins In 54B
HS-512 Counterweight Pins Out 54D
HS-513 Counterweight Cylinder Left Up 54F
HS-514 Counterweight Cylinder Left Down 54H
HS-515 Cab Tilt Cylinder Up 54R
HS-516 Counterweight Cylinder Right Down 54P
HS-517 Counterweight Cylinder Right Up 54M
HS-518 Cab Tilt Cylinder Down 54S
HS-519 Boom Hinge Pins In 54U
HS-520 Boom Hinge Pins Out 54W
HS-521 Assembly Cylinder Retract (up) 54Z
HS-522 Assembly Cylinder Extend (down) 54b
HS-523 Mast Raise Cylinder Extend 54d
HS-524 Mast Raise Cylinder Retract 54f
HS # Description Wire #
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