Mityvac 06820 Diesel Compression Test Adapters - Manual (Page 5)

Page Number - 5
Form 822378
USING THE PUMP
The vacuum pump is simple to use. In
most cases, the pump is either attached
directly to a component, used in place of
a vacuum line or connected into a
vacuum circuit with a tee connector. The
pump can be operated as a test instru-
ment in three ways:
1) When vacuum is desired for a test,
the movable handle of the pump is
simply squeezed with your hand, as
in clenching your fist. Continue
strokes until desired vacuum is
indicated on the gauge.
2) The pump can be connected into a
vacuum circuit and used to measure
existing amounts of vacuum, just as
any vacuum gauge would be used.
When used this way, do not pump the
handle, or incorrect readings may
result.
3) The pump can also be used as a
pressure pump by removing the
safety cap and connecting to the
pressure fitting. When the pump
handle is released from the closed
position, pressure is created.
Additional pressure can be applied
manually pushing in the piston pump
rod.
CAUTION: Always be sure the safety
cap is in place unless the pressure
fitting is being used. Other sections of
this manual outline specific uses for
the pump.
PROPER CARE
Your pump is a sturdily built, precision
test instrument. Do handle it carefully!
Don’t drop or handle roughly as the gauge
accuracy may be affected. Don’t lay on
hot manifold or expose to direct flame.
Don’t leave plastic pump in a hot car as it
may warp. Care for your pump and it will
give you years of trouble free service.
LUBRICATION
The factory installed lubricant is silicone
oil and should provide very long service.
If you find it necessary to lubricate your
pump, use silicone oil. If unavailable, you
may use DOT 5 (not DOT 3) silicone-
based brake fluid or a salad vegetable oil.
Do not use petroleum based fluids or
spray lubricants (WD-40, motor oil, etc.),
as these will damage the pump.