1986 Alpha One has leaked oil since service....

[achris]

I did my pressure tester myself as inspired by other forum fellows.
Is there a possibility to make DIY vacuum tester or the only option is the hand vacuum pump with tester ?

There are a few of ways to 'pull a vacuum'.
1. That MityVac.
2. I have an oil suction tank that uses compressed air to 'fill' with a vacuum. I use that to pull the air from a drive, via my Vac/pressure tester.

3. Use one of these water tap vacuum pumps.


4. Run a line from the intake manifold of your (petrol powered) car engine. Running at idle will be plenty enough vacuum to test a drive.

I'm sure there are plenty of other ways of doing it too.

Chris........

 

[nola mike]

4. Run a line from the intake manifold of your (petrol powered) car engine. Running at idle will be plenty enough vacuum to test a drive.

I'm sure there are plenty of other ways of doing it too.

Chris........

Ooooh, extra points for using your boat motor to pull the vacuum!

 

[Paintman1960]

Too funny !

 

[Kubaat3lover]

Yes I have oil pump also, will need to figure out how to connect it to the pressure gauge and also I will need to buy gauge with vacuum.
Thanks for advice !

 

[achris]

Yes I have oil pump also, will need to figure out how to connect it to the pressure gauge and also I will need to buy gauge with vacuum.
Thanks for advice !

Get a 'fuel pump gauge', it has both pressure and vacuum.

This is an Innova 3620. Available from the likes of Summit for about $25

Chris..........

 

[Kubaat3lover]

Ok thanks will have a look,
btw. Whats vaccum pressure You test your Alpha? On stick post you said up to 10in but 6 is ok? what does it mean ? Should it keep at least 6 inch of vacuum or what? Thanks!!

 

[achris]

If the shift shaft seal is new, it should hold around 10", if the seal if old, 6"...

Chris....

 

[Kubaat3lover]

I just finished pressure test again and it holds 6psi for 10min then 11psi for 10 mins,
No issues with my boat and im curious about vacuum test, is it needed if everything is fine ? no water in oil

 

[Grub54891]

Did you spin the shaft's and wiggle the shifter when you tested? If so you should be fine. Vaccume test only holds about 5lb's

 

[Kubaat3lover]

yes, spin yoke with Ujoints, then lower shaft and shift shaft,