Manitowoc Grove TMS800E User Manual

2-13
TMS800E SERVICE MANUAL HYDRAULIC SYSTEM
2
GROVE
Published 01-29-2014, Control # 496-00
OIL COOLER
Description
An air cooled hydraulic oil cooler (see Figure 2-5) is mounted
on the superstructure below the hoist platform. The oil cooler
consists of a radiator, two electric motors, and two fans. The
fans are driven by the motors and pulls air through the
cooling fins on the cooler. All hydraulic oil returns from the
major functions to two return lines which go to the reservoir.
One return line leads directly to the hydraulic reservoir filter
and bypasses the oil cooler. This line has a 2.07 bar (30 psi)
inline check valve which is normally closed and does not
permit flow. Therefore, all oil is routed through the other line,
through the oil cooler, through the hydraulic swivel and to the
oil filter in the hydraulic reservoir. When several hydraulic
functions are being used at one time (i.e., hoisting, lifting,
and telescoping), more oil has to flow through this one line,
causing a pressure buildup in the return lines. When this
pressure reaches 2.07 bar (30 psi), the normally closed
check valve will open and permit some oil to bypass the oil
cooler and flow directly into the reservoir filter.
A temperature switch in the hydraulic tank senses hydraulic
oil temperature to control the fan motors. The switch sends a
signal to the CAN controller. The controller will turn the fans
on and off based on that signal.
Maintenance
Removal
1. Tag and disconnect the hydraulic lines from the oil
cooler. Cap or plug all openings.
2. Tag and disconnect the electrical connectors to the fan
motors.
3. Remove the bolts, flatwashers, spring lockwashers and
nuts securing the hydraulic oil cooler brackets to the
hoist platform.
Installation
1. Position the oil cooler assembly under the hoist platform
and secure with the bolts, flatwashers, spring
lockwashers, and nuts. Torque the bolts, refer to
Fasteners and Torque Values pg 1-13.
2. Connect the electric motors.
3. Connect the hydraulic lines to the oil cooler as tagged
during removal.
Reference Only

Manitowoc Grove TMS800E Specifications

General

Brand	Manitowoc
Model	Grove TMS800E
Category	Construction Equipment
Language	English