Manitowoc 2250 Service Maintenance Manual

Reference Only
HYDRAULIC AND AIR SYSTEMS 2250 SERVICE/MAINTENANCE MANUAL
2-6
Published 07-19-16, Control # 249-01
Table 2-2. Hydraulic System Specifications
Function Direction
Pump-Motor Port
Connections
System
Pressure 1
1
bar (psi)
System
Pressure 2
2
bar (psi)
Charge
Pressure
bar (psi)
Speed
3
rpm
Drum 1
9
Low Speed
Lower Pump B to Motor B
200 (2,900) Lower
420 (6,090) Hoist
N/A 24 (350)
40 to 48
Drum 1
9
Low Speed
Hoist Pump A to Motor A
45 to 50
Drum 1
9
High Speed
Lower Pump B to Motor B
50 to 56
Drum 1
9
High Speed
Hoist Pump A to Motor A
Drum 2
4
Low Speed
Lower Pump B to Motor B
40 to 48
Drum 2
4
Low Speed
Hoist Pump A to Motor A
45 to 50
Drum 2
4
High Speed
Lower Pump B to Motor B
50 to 56
Drum 2
4
High Speed
Hoist Pump A to Motor A
Drum 3
4
Low Speed
Lower Pump B to Motor B
40 to 48
Drum 3
4
Low Speed
Hoist Pump A to Motor A
45 to 50
Drum 3
4
High Speed
Lower Pump B to Motor B
50 to 56
Drum 3
4
High Speed
Hoist Pump A to Motor A
Boom Hoist
Drum 4
5
Lower Pump B to Motor A
200 (2,900) Lower
420 (6,090) Hoist
N/A 24 (350)
14 to 17
Hoist Pump A to Motor B 16 to 18
Luffing Jib Hoist
Drum 5
5
Lower Pump B to Motor B 34 to 40
Hoist Pump A to Motor A 38 to 42
MAX-ER Main Hoist
Drum 9
6
Lower Pump B to Motor A 38 to 46
Hoist Pump A to Motor B 43 to 48
Rigging Winch
Haul In N/A
204 (3,000) N/A N/A 85 to 90
Pay Out N/A
Swing Single Drive
Left Pump A to Motor A
420 (6,090)
Right or Left
N/A 24 (350)
1.1 to 1.5
Right Pump B to Motor B
Swing Dual Drive
7
Left Pump A to Motors A
Right Pump B to Motors B
Swing Dual Drive High
Speed
7
Left Pump A to Motors B
Right Pump B to Motors A
Left Side Travel
6
Forward Pump B to Motor A
420 (6,090)
Forward or Reverse
8 to 9
at Tumbler
Reverse Pump A to Motor B
Right Side Travel
6
Forward Pump B to Motor A
Reverse Pump A to Motor B
Accessory Pumps
8
N/A Open Loop to Tank
N/A 0 to 241 (0 to 3,500) N/A N/A
Fan Pump
10
N/A Open Loop to Tank
224 (3,250)
Notes
1 This is controlled by multi-function valves in each pump.
2 This is controlled by the crane’s programmable controller.
3 Speeds are based on engine at high idle, no load (no rope on drums), and handles moved fully forward or back.
4 The same pump is used for split rear drum 2 or 3. The active drum is selected by the first handle moved.
5 This is the pump used for Boom Hoist 4 or Luffing Jib Hoist 5. The active drum will not hoist until the alternate drum is parked.
6 These are the pumps used for MAX-ER Main Hoist Drum 9 or travel left side and right side.
7 Dual swing standard with MAX-ER 2000 prep. High-speed swing motors optional for clamshell operation.
8
Accessory pumps are the source of hydraulic pressure for the accessory system and high-pressure accessory components. Items
include swing and travel brakes, boom hinge pin cylinders, rotating bed jacking cylinders, front and rear adapter frame pin cylinders,
mast pins and raising cylinders, cab tilt cylinder, rigging winch, crawler pin cylinders, and MAX-ER 2000. The computer controls pump
pressure depending on the accessory selected.
9 Optional Front Drum 1 is not present in MAX-ER configuration.
10 The fixed-displacement fan pump also supplies low pressure to MAX-ER Drum 9 accessory.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English