Vacuum pumps.

Hi all I am looking at fitting a pump to my servos . Mine just don't feel like they are working properly . Have to press pedal quite hard . My question is has any body fitted an electric servo pump and any for or against ..

Thanks all .. John.

Larry L.

Lifetime Premier Supporter
I've now installed about 4 different electric auxiliary vac pumps (various brands)...'am now trying to get my 5 FIFTH ONE to work...and NONE to date have worked as they should OR worked in one fashion or another for any longer than an hour-or-so running time.

If you find one that actually WORKS AS ADVERTISED and works for longer than an hour or two of running time - PLEASE let me know!
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Larry L.

Lifetime Premier Supporter
That's the only one I saw.
'Will now do what I should have done in the 1st place: insert the word "electric"!

Edit: no luck there either...'will tackle it after DAWN!
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Larry L.

Lifetime Premier Supporter
hello, other decent solution is to find the combination of alternator/vacuum pump which can be find onthe nissan petrol diesel 4x4 some mutshibusi diesel engine equipped 4x4

thats the way i'm going in my build

as example:MITSUBISHI L200 2.5 4D56 TD DIESEL BRAND NEW ALTERNATOR + VAC PUMP 1998-2006 | eBay

hope this could help

Here is one on this side of the pond.

New Alternator Fits Mitsubishi 1986-13 Pajero Shogun L200 L300 Montero Delica | eBay

or, what about one of the manual style, off a 5.7 olds diesel ?

'Will check these out...but, 'would prefer to use a 'stand alone' unit such as the one above - if I can find one that actually works.
I normaly use the Hella UP28 for this aplication which works great.
The Hella UP 28 pulls 25inHg ( I measured that).
Bit of searching on eBay normaly found for around $100.-
Volvo's have them.

Hooked these up to the brakelight switch so when hitting the brake the pump starts sucking.

I Have converted two cars allready who drive for years now.

Larry L.

Lifetime Premier Supporter
I have seen this unit as I have a former employee who works for the company: Electric Vacuum Pump Kits | Vacuum Pump Parts and Accessories

If you inquire ask for Greg and tell him I sent you.

Thanks, Rick. 'Appreciate it.

I'll wait 'til I see if the replacement relay does the trick. If it doesn't, I'll give him a call and see if he can shed some light on things.

According to the 'meter, the stinkin' relay has to be the fly in the ointment.

Larry L.

Lifetime Premier Supporter
I have just fitted a UP 28 pump .. makes a world of difference … LARRY …
'Replacement relay still not, I don't know what I'll end up doing/getting.

Do you know what the 'start up/shut off range' is on the UP 28? I'm looking for something that provides 15 inches-or-so 'on' / 25 inches-or-so 'off'...