Static Pressure Test (Engine Off); Set Up And Procedure - Mityvac MV4534ñ Manual Del Usuario

Static pressure
test (Engine off)
For diagnosing: Cooling system leaks.
Always read instructions carefully prior to
use.
WARNING

Do not remove radiator cap or expansion
tank cap while engine is at operating
temperature. Always allow engine to cool
before removing radiator cap or expansion
tank cap. Cooling system is under pressure.
Failure to allow engine to cool before
opening cooling system could result in
serious injury.
NOTE
Some late-model vehicles are equipped with
radiator tanks and expansion tanks made of
plastic. Excessive over-tightening of
expansion plug could result in cracking of
radiator or expansion tank. Use caution when
tightening expandable rubber plug.
Always refer to manufacturer's
instructions for particular radiator pressure
tester that is being used.
Set-up and procedure
1 Ensure cooling system is cool and not
pressurized.
2 Carefully remove radiator or coolant
bottle pressure cap.
3 Check to see that radiator or coolant
bottle is filled to proper level, and check
hoses for visual damage or leaks.
Fill and repair as necessary prior to
testing.
4 Turn top tension knob (1) counter-
clockwise and bottom tension knob (2)
clockwise until all tension has been
relieved from expandable rubber
adapter (3).
5 Thoroughly wipe inner diameter of filler
neck or expansion bottle with clean rag to
remove any coolant residue. Many
coolants act as lubricants and may cause
universal radiator adapter to slip out
during pressure testing.
6 Insert expandable rubber adapter (3) of
universal radiator adapter into filler neck
of radiator or expansion tank (Fig. 6).
7 While holding bottom knob, rotate top
knob of adapter clockwise until rubber
fully engages interior wall of filler neck.
8 Pull up on adapter with reasonable force
to ensure it holds firmly in place.
9 To test connection, hold tank of radiator
or top of expansion tank. Grip universal
radiator adapter and slowly pull up on
adapter. Adapter should hold firmly in
filler neck. If necessary, tighten
expandable rubber plug more by turning
tension knobs further.
1
2
3
5
Fig. 6