Manitowoc 2250 Service Maintenance Manual

Reference Only
HYDRAULIC AND AIR SYSTEMS 2250 SERVICE/MAINTENANCE MANUAL
2-16
Published 07-19-16, Control # 249-01
SHOP PROCEDURE
General
This section covers hydraulic adjustments for the hydraulic
system and related components on this crane.
Experienced technicians, trained in the operation of this
crane and its hydraulic system, shall perform these
procedures. These technicians shall read, understand, and
comply with all instructions.
All adjustments were made to the crane before it was
shipped from the factory. Adjustments by field personnel are
required only when parts are replaced or when instructed by
the Manitowoc Crane Care Lattice Team.
Comply with the pressure and flow settings specified.
Altering settings without the approval of the Manitowoc
Crane Care Lattice Team can damage crane components or
cause the crane to operate improperly. Procedures for
connecting hydraulic fittings are provided in this section.
During many of these procedures, it will be necessary to
monitor data on the diagnostic screens of the digital display.
See Electrical System
Section 3 for the description and
operation of the diagnostic screens.
When a procedure states “determine cause and correct,”
proceed as follows:
• MCC Assembly Personnel—Contact the Engineering
Department.
• Field Service Personnel—Contact the Manitowoc Crane
Care Lattice Team.
FIGURE 2-18
Pump Identification
Pump Port Identification
Item Description
1 Boom Hoist Pump
2 Load Drum Pump (qty 2)
3Swing Pump
4 Right Crawler Pump
5 Left Crawler Pump
6 Fan (outboard) and Accessory
(inboard) Pump
7Pump Drive
Pump Port A Port B
1 Lower Hoist
2 Hoist Lower
3 Left Right
4, 5 Reverse Forward
A1064
Access at Left Rear Outboard Side
of Rotating Bed
P916
Pump Port Identification
Item Description
A System Pressure Port A
B System Pressure Port B
1 Mulitfunction Valve Port A
2 Charge Pressure Gauge Port
3 Multifunction Valve Port B
4 Charge Pressure Relief Valve
5 Neutral Adjusting Screw
6 Electronic Displacement
Control (EDC)
7 Manual Override Knob
P966
P967
A
B
1
2
3
4
5
6
7
5
6
1
2
3
7
4

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English