MAHLE RTI MCX-2 User Manual Rev G
OPERATION MANUAL
MCX-2S
Multiple Coolant Exchanger
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RTI Technologies, Inc.
4075 East Market St.
York, PA 17402 USA
800-468-2321 Where Else?
www.rtitech.com
Manual Number 035-80863-00 (Rev G)
TM
TABLE OF CONTENTS
Component Description ....................... 2
Safety Precautions ........................... 3
Operation of Valves .......................... 3
Set-up..................................... 4
Relieving Radiator Pressure.................... 5
Lowering Coolant Level ....................... 6
Connecting to the Coolant System ............... 7
Special Hookups............................. 8
Coolant Replacement......................... 9
Test Coolant System for Leaks ................. 11
Completing the Job........................... 12
Changing Coolant Type ....................... 14
Emptying the Waste Tank ..................... 16
Replacement Parts........................... 17
Waste Pump Impeller Replacement.............. 18
Flow & Wiring Diagram ........................ 19
Technical Support: 800-468-2321
Mon. - Fri. 8AM - 5PM (Eastern Time)
Sat. - Sun. 8AM - 12PM (Eastern Time)
Page 1
COMPONENT DESCRIPTION
Unpack all components and verify quantities per this illustration.
Contact RTI if any items are missing or damaged.
Small Hose Clamps
Large Hose Clamps
Extra Large Hose Clamps
1-1/4
Small Adapter Hose
1-1/2
Large Adapter Hose
2-1/4
Extra Large Adapter Hose
1-3/8
1-3/4
2-1/2
1-3/8
1-1/4
Small Step Adapters
1-3/4
1-1/2
Large Step Adapters
2-1/2
2-1/4
2
Extra Large Step Adapters
Green Hose
Black Hose
Level Magnets
Impeller & Gasket
New Coolant
Tank
(Qty=3)
Wand
Waste Tank
Page 2
SAFETY PRECAUTIONS
WARNING: FAILURE TO FOLLOW THESE PRECAUTIONS CAN RESULT IN
SERIOUS INJURY OR DEATH.
C Read and understand the Operation Manual completely before operating this unit.
C Always wear proper eye and skin protection when operating and maintaining this
equipment.
C Take precautions to keep clothing, hair, hands, hoses, etc. away from all moving
parts on the vehicle.
C Automotive cooling systems can be under pressure and extremely hot. Use extreme
caution when removing caps and hoses.
C Coolants are poisonous to people and animals and are also corrosive. Clean up any
spills immediately.
CAUTION: FAILURE TO FOLLOW THE PRECAUTIONS AS OUTLINED IN THE
OPERATION MANUAL CAN RESULT IN DAMAGE TO THE ENGINE,
VEHICLE OR EQUIPMENT WHICH WILL NOT BE SUPPORTED OR
COVERED UNDER WARRANTY.
C Do not allow waste coolant tank to overflow. Immediately clean up any coolant
spills. Damage to the vehicle and equipment can result from the corrosiveness of
coolant.
C Continuous monitoring of the coolant replacement process is required.
Operation of Valves
VALVE OPEN VALVE CLOSED
Page 3
The MCX-2S was carefully packaged by RTI to
arrive without damage. Report any evidence of
damage immediately by calling RTI Technical
Support at 800-468-2321.
Mon. - Fri. 8AM - 5PM (Eastern Time)
Sat. - Sun. 8AM - 12PM (Eastern Time)
Following are the steps required to prepare the
MCX-2S for operation:
SET UP
Conventional
Green Gold
1. Remove all packing materials. Press sides of buckle
to release black web strap on rear of unit. Remove
the tanks and the accessory cartons from their
shipping position. There are three small New Coolant
Tanks and one large Waste Coolant Tank.
2. Press down on the levers on the front casters to lock
them. This will keep the MCX-2S from moving as
tanks are installed and connected.
3. Labels are provided to attach to the new coolant tanks
to identify the type of coolant. Peel off the protective
backing cover and place the appropriate label on the
narrow side of the new coolant tank. Attach the label
on the side closest to the brass hose connection
fitting and large fill cap.
4. Unscrew the large cap and fill one of the New Coolant
Tanks with coolant and water. Refer to the
specifications of the coolant manufacturer for the
correct proportions of water and coolant. Replace the
cap.
5. Pull the Tank Plug out of the port in the large cap. A
strap keeps the plug handy for use when carrying the
tank to other areas to avoid splashing.
6. Set the New Coolant Tank into the right side of the
MCX-2S on the shelf above the Battery. The brass
hose connection fitting should be closest to the rear
of the MCX-2S. The coolant type label should be
visible as shown above when the tank is positioned
correctly.
7. Connect the Green Hose to the brass quick connect
fitting on the New Coolant Tank. A sleeve on the
hose fitting can be slid away from the end of the fitting
to make connection and disconnection easy.
9. Connect the Black Hose to the quick connect fitting on
the Waste Tank. A sleeve on the fitting can be slid
away from the end of the fitting to make connection
and disconnection easy.
10. Pull the Tank Plug out of the port in the large cap on
the Waste Tank. A strap keeps the plug handy for use
when carrying the tank to other areas to avoid
splashing.
11. Insert the small diameter Black Tube into the hole in
the large cap on the Waste Coolant Tank. This tube
hangs above the Waste Tank. Do not pull on the
hose. Do not confuse this tube with the Radiator
Pressure Relief Hose on the upper right corner of the
MCX-2S.
12. Press sides of buckle on strap and insert mating end
of buckle to secure the tanks in place.
13. Lay the green and black hoses over the hose storage
bracket on the rear of the MCX-2S. Wrap the Radiator
Pressure Relief Hose on the bracket on the right side
of the rear of the MCX-2S.
14. Install 12 volt battery (not supplied with unit) in lower
right compartment. Set all selector switches to OFF.
Connect cable using supplied hardware. Connect
black terminal to negative (-) battery post and red
terminal to positive (+) battery post.
15. Release the locks on the front casters by lifting up on
the levers.
16. Refer to Page 2 and check that all accessory parts
were received. The accessory parts are packed in
cartons included with the MCX-2S.
8. Set the Waste Coolant Tank into the left side of the
MCX-2S. The Hose connection fitting should be
closest to the front of the MCX-2S.
Page 4
RELIEVING RADIATOR PRESSURE
WARNING: Coolant in the vehicle cooling system may be extremely hot and
under great pressure. Wear safety glasses and use protective
clothing and gloves. Use extreme caution when removing
radiator cap and hoses.
Clear Hose
Radiator
Hose
Green Hose
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Black Hose
Radiator
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Overflow
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Water
Pump
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Engine
Block
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Heater
Core
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NOTE: The MCX-2S does not need to be connected to power for the following.
The MCX-2S will relieve the pressure in a hot-car radiator by drawing a vacuum on the
overflow port on the radiator cap.
Connect shop air (55 to 100 PSI) to the port on the rear of the MCX-2S. This will cause
a vacuum to be pulled on the small diameter clear hose, also connected to the rear.
Connect clear hose to the overflow port on the radiator cap as shown above.
The system Vacuum Gauge on the MCX-2S control panel indicates the vacuum level
which will increase until the radiator cap opens and relieves the pressure. As the
pressure releases a small amount of coolant will be seen flowing in the clear hose.
When the pressure has been relieved, the radiator cap will again close and the vacuum
level will increase and become steady on the gauge.
The radiator cap can now be slowly and carefully removed.
Disconnect shop air from rear port.
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