Vacuum pump...

[87crewdually]

Makes NO difference which way it turns. It's on an eccentric, all it cares is going up and down like an arm on a mechanical fuel pump.
I used last time Royal purple 75w90. I've heard of guys using 30w too. Don't overfill more isn't better.

 

[gatorman21218]

hmm i also would like to see a picture of this oil port

 

[87crewdually]

hmm i also would like to see a picture of this oil port

It's the only bolt on the back.

You must be registered for see images

 

[SparkandFire]

I wonder what the fill procedure is for that...

Gives new meaning to the term "Check the headlight fluid"

Now it will be "I need to change my vacuum pump oil"

 

[MIDNIGHT RIDER]

I wonder what the fill procedure is for that...

Gives new meaning to the term "Check the headlight fluid"

Now it will be "I need to change my vacuum pump oil"

I just remove that bolt, dump out the old, then pour the new oil in until it is level with the hole.

STP is also a good candidate for such applications.


As already mentioned, these pumps care not which direction they rotate; the eccentric on the pulley-shaft works the operating-rod up and down, thus pushing in and out against the diaphragm; the diaphragm cares not which direction the cam is rotating, just that the rod is riding the cam up and down.



A dash-mounted vacuum gauge is simple to install, in-expensive to buy, and an absolute necessity, letting you know the health of the pump and vacuum system.

By using a check-valve in the big line at the pump, a gauge-line TEEed into the hose between the check-valve and pump will show pump vacuum, regardless of any leaks in the system past the check-valve.

Thus, TWO gauges can pretty much trouble-shoot the entire system from one glance at the gauges.

 

[RedHotNRollin]

they do... well atleast in the later models like mine... mine just doesnt work.

 

[gatorman21218]

x2. didnt even know i had one til like a week ago