Mityvac MV4560 COOLING SYSTEM TEST KIT - Manual (Page 6)

Page Number - 6 Form 801625
Static Pressure Test (Engine Off)
For diagnosing:
Cooling system leaks
Set-up & Procedure:
1. Ensure the cooling system is cool and not pressurized.
Carefully remove the radiator or coolant bottle pressure cap
(Fig. 1).
2. Check to see that the radiator or coolant bottle is filled to
the proper level, and check hoses for visual damage or
leaks. Fill and repair as necessary prior to testing.
3. Select the correct Cooling System Adapter for the
application.
4. Apply water or coolant to the rubber gasket and/or o-ring
on the adapter, and install the adapter in place of the
pressure cap (Fig. 2).
5. Secure one end of the clear hose to the pressure pump
using the compression nut (Fig. 3).
6. Secure the second end of the hose to the cooling system
test adapter using the compression nut (Fig. 4).
7. Note the operating pressure of the cooling system
indicated on the cap or in the vehicle repair manual.
8. Operate the Pressure Pump until the needle on the
pressure gauge moves to the arrowhead at the end of the
colored band indicating the appropriate pressure range of
the cap (see Chart A).
Caution: Do not pressurize the cooling system beyond the
appropriate color of arrowhead for the system being tested.
9. Monitor the gauge for at least two minutes. If the pressure
reading drops, a leak is present.
10. With the system still pressurized, perform a visual
inspection of the entire cooling system. Check hoses
and connections for seepage, which would indicate a leak.
Return to the gauge and check the reading once more.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Chart A: Cooling System Cap Pressure Test Ranges
Rated Pressure (PSI) Pressure Range (PSI) Arrow/Band Color
4 3 - 5 Yellow
7 6 - 8 Green
10 9 - 11 White
13 or 14 12 - 16 Blue
15 or 16 14 - 18 Yellow
18 16 - 20 Black
20 18 - 22 Green
30 28 - 30 Red