DVC-101-HD Manual
Vacuum Tester
Instructions
DVC-101-HD
Please read instructions
before using.
© Goodson Shop Supplies
The DVC-101-HD Manual Vacuum Tester provides a quick, sim-
ple and accurate method for checking valve seating on most gaso-
line and diesel engines. A rubber 4
combustion chamber, vacuum is applied, and valve seating is
checked by timing vacuum leak-down.
Instructions
1) Attach supplied tubing to pump nozzle, and vacuum plate
2) Place cup adaptor over combustion chamber to be tested, and
3) Operate pump to test sealing of cup adaptor. If seal is not tight,
4) With test plate in position, operate pump until at lest 22 in.
5) When gauge hand drops to 20 in. Hg, start timing. Stop timing
The following items are included in this
kit:
Accessories available:
Round Plates:
Rectangle Plates
Plate lube
Things you should know about your
manual vacuum tester
Your Manual Vacuum Tester can be used on any engine which
have the following characteristics:
1) A smooth cylinder head surface which will allow the test plate
2) Valves which do not protrude above the cylinder head
3) Before checking valve seating, make sure valves, seats and
Review August 2013
hold firmly in position.
apply a few drops of oil (oil not included, but is available sepa-
rately) to sealing surface of test plate.
Hg is obtained.
when hand reaches 10 in. Hg. If leak-down time is less than 10
seconds, unsatisfactory sealing is indicated, and valve and seat
should be inspected.(*Idealy no drop should take place)
1
Two-way pump - (vac / pres.)
1
⁄
" ID clear plastic tubing
1
1
4
4
⁄
" dense foam plate
3
4
DVC-2
2" dia.
3" dia.
DVC-3
DVC-475
4.75" dia
DVC-6
6" dia.
DVC-23
2"x3"
DVC-34
3"x4"
4oz.
DVC-PL
to form a tight seal over the valves.
surface and prevent the cup adaptor from sealing.
cylinder head surface are dry and clean. This will ensure maxi-
mum sealing of valves in seats and cup adaptor over valves.
⁄
" adaptor is placed over the
3
4