Test coolant system for leaks, Page 11 – MAHLE RTI MCX-2 (Rev G) User Manual
Page 12
Page 11
Adapters
Hose
Radiator
Green Hose
Black Hose
Radiator
Step
SY
ST
EM
PR
ES
SU
RE
EX
CH
AN
GE
CO
OL
AN
T
TE
ST
FIL
L R
AD
IAT
OR
& O
VE
RF
LO
W
EM
PT
Y W
AS
TE
TA
NK
LO
W
ER
RA
DIA
TO
R
& O
VE
RF
LO
W
Overflow
Water
Pump
OF
F
OF
F
SY
ST
EM
VA
CU
UM
& O
VE
RF
LO
W
LO
W
ER
RA
DIA
TO
R
EX
CH
AN
GE
CO
OL
AN
T O
R
FIL
L R
AD
IAT
OR
& O
VE
RF
LO
W
EM
PT
Y W
AS
TE
TA
NK
Core
Engine
Block
Heater
Adapter
Hose
OF
F
EM
PT
Y W
AS
TE
TA
NK
EM
PT
Y W
AS
TE
TA
NK
& O
VE
RF
LO
W
LO
W
ER
RA
DIA
TO
R
& O
VE
RFL
OW
FIL
L R
AD
IAT
OR
TE
ST
EX
CH
AN
GE
CO
OLA
NT
OFF
FIL
L R
AD
IAT
OR
& O
VE
RF
LO
W
EX
CH
AN
GE
CO
OLA
NT
OR
LO
WE
R R
AD
IAT
OR
& O
VE
RF
LO
W
SY
STE
M V
AC
UU
M
OF
F
OFF
SY
ST
EM
PR
ES
SU
RE
TEST COOLANT SYSTEM FOR LEAKS
The MCX-2S can be used to check the coolant system for leaks. The coolant system
is pressurized and the System Pressure Gauge on the MCX-2S is monitored for a drop
in pressure which would indicate a system leak.
The MCX-2S should be connected a shown above.
1.
Turn control valve to TEST.
2.
Press the top of EXCHANGE COOLANT OR FILL RADIATOR & OVERFLOW
selector switch to turn on the pump.
3.
Watch the System Pressure Gauge and press the bottom of the EXCHANGE
COOLANT OR FILL RADIATOR & OVERFLOW selector switch when the
pressure reaches 10 to 13 PSI.
4.
The coolant system is now pressurized. Monitor the pressure for a constant
reading. A coolant system leak is indicated if the pressure falls.