Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 5-19
MLC300 SERVICE/MAINTENANCE MANUAL HOISTS
5
Drum 4 Hydraulic Schematic—Lowering
Item Description
1Engine
2Pump Drive
3 Pump 3 (inboard C) (left/system B)
4 Pump 4 (inboard D) (right/system A)
5 Pump 3 Pressure Transducer
6 Pump 1 Charge Pump (inboard A)
7 Check Valve
8 Drum 4 System A Control Valve
9 Drum 4 System B Control Valve
10 Relief Valve
(370-375 bar [5,366-5,439 psi])
11 Drum 4 Motor Pressure Transducer
12 Load-Holding Valve
(shifting pressure = 12 bar [174 psi])
13 Drum 4 Pawl Solenoid Valve
14 Drum 4 Brake Release Solenoid Valve
15 Drum 4 Pawl Cylinder
16 Drum 4
17 Drum Brake (spring applied)
18 Hydraulic Motor (variable 160/82 cc/rev)
19 Makeup Check Valve (qty 2)
(cracking pressure = 0,34 bar (5 psi])
20 Makeup Accumulator
(precharge = 5,5 bar [80 psi])
21 Thermal Expansion Accumulator
(precharge = 1,4 bar [20 psi])
22 Brake Defeat Valve
23 Pressure-Reducing Valve
(16,5 bar [240 psi])
24 Check Valve
(cracking pressure = 0,2 bar (3 psi])
25 Sequence Valve (21,4 bar [310 psi])
26 Pump 4 Pressure Transducer
27 Drum 4 System A Pressure
Transducer (ports A/B)
28 Drum 4 System B Pressure
Transducer (ports A/B)
29 Distribution Manifold (qty 2)
FIGURE 5-9

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English