Applications And Basics Of Testing - Mityvac MV4535 Manual De Instrucciones

Applications & Basics of Testing
The MV4535 Cooling System AirEvac Kit includes equipment
to perform a vacuum leak test on an automotive cooling system
that has been drained of fluid, and then to refill it quickly
without trapping air. All tests are performed with the engine
off, and when the cooling system is cool and drained of fluid.
Cooling system leaks and airlocks are a common cause of
overheating, and can be quickly diagnosed and eliminated
using the MV4535 AirEvac Kit. Although a pressure test is
most commonly used to diagnose a cooling system leak,
using vacuum is convenient because it can be performed
in conjunction with a vacuum refill. Both functions are
performed using a compressed air operated vacuum to
remove all air from a vehicle's cooling system, and then
monitor it to determine if there are any leaks. If no leaks
are present, the vacuum is used to automatically draw in
new fluid, and fill the system without trapping air.
Precautions
This equipment is designed for servicing a variety of vehicles
in a safe, convenient manner. However, differences in cooling
systems may make it impossible to perform some of the tests
indicated in these instructions on every vehicle. The procedures
documented in this manual are to serve as guidelines for the
use of this equipment. In addition to these guidelines, always
follow the manufacturer's recommended procedures when
servicing each unique vehicle. Do not attempt to force a test
on a cooling system for which this equipment is not designed
to perform.
Performing cooling system tests using the MV4535 is simple
and straightforward if you follow the instructions. However,
always keep in mind that you are working with a system that
may be full of cold or hot fluid that is under pressure and just
waiting to be expelled. If you are testing an engine that is hot
and/or pressurized, always stop to think before removing a cap
or disconnecting a hose or other component.
Always read carefully and understand instructions prior to using
this equipment.
Always wear eye protection when removing radiator or coolant
bottle cap, or when performing any cooling system test.
Never remove the radiator or coolant bottle cap, or attempt to
pressurize the cooling system of a vehicle that is overheated.
Always allow system to cool prior to attempting to perform any
cooling system related test procedure.
Form 822954
To order call 1-800-548-1191 or visit www.partdeal.com - [email protected]
Basics of Testing
When deciding where to connect this test equipment to the
cooling system, first look for the radiator and determine if it
has a fill neck and pressure cap. This is common on about
half of US manufactured vehicles, and almost all Asian
manufactured vehicles, and would be the first choice for
connecting. If the radiator is closed and inaccessible, then
the connection will be made through a coolant bottle. Some
automotive cooling systems utilize a coolant overflow bottle
that is not part of the sealed system. Attempting to test the
cooling system through this bottle will not connect you into
the sealed system, and will simply vent the required test
vacuum to the atmosphere. This type of overflow bottle is
easily recognized because it typically utilizes a snap-on style
cap or a threaded cap that is open to atmosphere. A test
connection should be made through a radiator or coolant
bottle with a bayonet or threaded style of cap, designed to
maintain a specific pressure in the cooling system.
Universal Cooling System Adapter
The MV4535 includes a cone shaped universal adapter for
connecting the test equipment to a radiator or coolant bottle.
After removing the cooling system pressure cap from the
radiator or coolant bottle, the universal adapter will slip easily
into the neck. The adapter does not need to be forced to form
a seal. Once vacuum is applied, it will be sucked securely into
the neck, and will form an airtight seal. Once the vacuum is
relieved, the adapter can be easily withdrawn from the neck.
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