HYDRAULIC SYSTEM TMS800E SERVICE MANUAL
2-50
Published 01-29-2014, Control # 496-00
MOTOR CONTROL MANIFOLD
Description
The motor control valve manifold (see Figure 2-34) is
installed in the center of the frame. The purpose of the valve
is to provide simultaneously proportional control of the oil
cooler motor and a constant flow to the optional
superstructure air conditioner motor.
The manifold contains a two-position, 4 way solenoid valve,
an adjustable relief valve and a proportional flow control
cartridge.
Priority flow is from section 1 of pump #3 to a proportional
solenoid valve in the manifold. The solenoid is energized
sending flow to swivel port 6 to the air condition option.
Excess flow is routed to the hydraulic oil cooler at 8.0 gpm by
the proportional flow control valve in the manifold. If a signal
is received from the oil cooler temperature sender, the other
proportional valve is energized and priority flow is routed to
the oil cooler motor.
Maintenance
Removal
1. Tag and disconnect the hydraulic lines from the valve.
Cap or plug all openings.
2. Remove the bolts and washers securing the valve to the
frame.
Installation
1. Install the valve to the frame and secure with the bolts
and washers. Torque the bolts refer to Fasteners and
Torque Values, page 1-13.
2. Connect the hydraulic lines to the valve as tagged during
removal.
3. Check valve and hydraulic connections for leaks. Make
repairs as necessary.
FIGURE 2-34
3
4
6
8
2
5
10
9
7
4
7
1
5
3
6
9
10
2
6548-2
6548-1
1
Item Description
1 Proportional Flow Control Cartridge
2Valve
3 Check Valve
4 Adjustable Relief Valve
5 Port A1 (Hydraulic Oil Cooler) - Motor Supply
Item Description
6 Port B1 (Hydraulic Oil Cooler) - Motor Return
7 Tank Port (T)
8 Gauge Port (GP)
9 Pressure Port (P) (Not Shown)
10
Port A2 (To Swivel Port 6 Air Condition
Option) (Not Shown)
Reference Only
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