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GQ TD42 vacuum pump not working - Help Please

Tech Talk for Nissan owners.

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Posts: 569
Joined: Sun Jan 11, 2004 11:36 am
Location: Sunshine Coast QLD

GQ TD42 vacuum pump not working - Help Please

Post by Mark2 »

Towing my boat home today and coming down a steep hill I thought I had lost my brakes until I realised there was no power assistance. Managed to get home very cautiously.

The vacuum pump on the alternator is not producing any vacuum.

Can they be overhauled? Does anyone know know where I could get another one at a reasonable price? I hope I dont have to replace the alternator.........
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Posts: 1084
Joined: Sun Apr 04, 2004 9:33 pm
Location: Aotearoa

Post by J Top »

Are you sure it is the pump,it is common for the small vaccum hoses ,especally around the rear of the pump,to perish and fail,causing
vaccum loss.
I have stripped the pumps,they are very simple amd just require cleanliness,and cleaned up the vanes to enable free movement,improving their pumping ability.They seem to clog up with old oil?.
J Top
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Posts: 569
Joined: Sun Jan 11, 2004 11:36 am
Location: Sunshine Coast QLD

Post by Mark2 »

J Top,
I pulled the large vacuum hose off the pump while the engine was running and couldnt feel any vacuum. So I assume its something to do with the pump. Are there other hoses which connect to the pump?
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Joined: Thu Jun 03, 2004 8:30 am
Location: wallan victoria

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Re: GQ TD42 vacuum pump not working - Help Please

Post by nissan turbo 4wd »

Mark2 wrote:Towing my boat home today and coming down a steep hill I thought I had lost my brakes until I realised there was no power assistance. Managed to get home very cautiously.

The vacuum pump on the alternator is not producing any vacuum.

Can they be overhauled? Does anyone know know where I could get another one at a reasonable price? I hope I dont have to replace the alternator.........
yes i had same problem alt drive worn out and not cheap to replace
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Joined: Wed Nov 27, 2002 10:13 am

Re: GQ TD42 vacuum pump not working - Help Please

Post by bogged »

You can rebuild them... but may as well take the opportunity to upgrade while at it.

search few pages back, has been mention of places to buy upgraded ones
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Posts: 7
Joined: Thu Jun 03, 2004 8:30 am
Location: wallan victoria

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Contact nissan turbo 4wd

Re: GQ TD42 vacuum pump not working - Help Please

Post by nissan turbo 4wd »

bogged wrote:You can rebuild them... but may as well take the opportunity to upgrade while at it.

search few pages back, has been mention of places to buy upgraded ones
after market alt comes complete with vac\pump . new not reco . its the best way to go about $400. two year warranty
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Joined: Mon Nov 25, 2002 9:51 pm
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Re: GQ TD42 vacuum pump not working - Help Please

Post by turps »

nissan turbo 4wd wrote:
bogged wrote:You can rebuild them... but may as well take the opportunity to upgrade while at it.

search few pages back, has been mention of places to buy upgraded ones
after market alt comes complete with vac\pump . new not reco . its the best way to go about $400. two year warranty


Yep that sounds like the place.
www.aea.com.au
THOUGHT FOR THE DAY....
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