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WARNING
Never remove the radiator cap or
expansion tank cap while the engine
is at operating temperature. Always
allow the engine to cool before
removing the radiator cap or expan-
sion tank cap. The cooling system is
under pressure. Failure to allow the
engine to cool before opening the
cooling system could result in seri-
ous injuries.
1
A
Set-up and procedure
1 Drain engine cooling system.
2 Hold the lower knob (6) on the expandable
rubber adapter (7) and turn the top ten-
sion knob (5) counter-clockwise until all
tension has been relieved (→ fig. 1,A).
3 Wipe inner diameter of filler neck or expan-
sion bottle with a clean rag to remove any
coolant residue. Many coolants act as
lubricants and can cause the cooling sys-
tem adapter (1) to slip out during pressure
testing.
4 Insert expandable adapter plug (7) into the
filler neck (8) of the radiator or expansion
tank.
5 While holding the bottom knob (6), rotate
the top knob (5) of the adapter (1) clock-
wise until adapter plug (7) fully engages
the interior wall of the filler neck (8).
5
6
7
8
B
5
6
C
2
7
8
3
6 Connect the vacuum pump assembly (2)
to the cooling system adapter (1) utilizing
the quick coupler connection (9). Attach an
air-connector (not included) (11) to fitting
(10) on the vacuum pump assembly (2)
(→ fig.1, C).
NOTE
To test the adapter plug connection,
slowly pull up on the adapter (1).
The adapter plug (7) should hold firmly
in the filler neck (8). If necessary, tighten
the adapter plug (7) by adjusting the
tension knobs (5,6) (→ fig.1, B).
11
10
9
Fig. 1
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