JLG 600SC_660SJC Service Manual - Manual (Page 96)

SECTION 5 - CAT CHASSIS (S/N 0300128000 TO PRESENT)
5-4 – JLG Lift – 3121157
5.2 GENERAL
This manual describes the specifications, structure and
handling method of the motor MAG-85VP series for closed
loop in order to assure reliable performance for a long
period of time and to prevent it from improper use.
Description
Design of Drive Motor:
The drive motor is a swash plate type axial piston motor
integrated with a reduction gear, consisting of seven func-
tions; swash plate axial piston motor, shuttle valves, cross-
over relief valves, low pressure relief valves, two-speed
changeover system, parking brake, and reduction gear.
The piston motor converts fluid energy of pressurized oil
delivered from a hydraulic pump to mechanical energy,
and transfers high speed and low torque power to the
reduction gear. The reduction gear changes the high
speed and low torque power to low speed and high
torque power, and transfers the power to a drum.
Model Code Identification:
Features:
1. The motor is light-weight and compact unit,
equipped with shuttle valves, crossover relief valves,
low pressure relief valves, swash plate type axial pis-
ton motor, and reduction gear as one package.
2. The reduction gear is of casing rotation type to
ensure sufficient durability.
3. A double stage planetary reduction gear ensures
high efficiency and long life.
4. The integrated parking brake prevents the machine
from slipping on a slope, and securely engages the
mechanical brake when it is parked or stopped.
Design Type:
Axial piston motor - Swash plate piston motor (2-speed
changeover system, integrated parking brake)
Valve function - Low pressure shuttle function, low pres-
sure relief function, high pressure relief function (installed
on cross-line)
Reduction gear - Double stage planetary pinion gear sys-
tem
MAG – 85 V P – 1400 – X
Axial piston motor with reduction gear
Motor displacement(cm3/rev approximation)
With two-speed changeover system
With parking brake
Output torque (kgf-m)
Design number