ATTN:Rear End Specialist

[Pearl02]

A week ago I noticed that my pinion seal is leaking. I removed the plug to check the level and there was pressure behind the plug. The fluid level seem to be full. I decided to check the vent valve on the rearend. The car had been sitting in my garage for 24hrs. As I removed the plug, there was also pressure behind the valve. I could hear it escaping as I removed the valve. Ny question is should there be any preesure there? My Mazda B4000 uses a vent tube instead of a valve. I'm trying to figure out if the vent valve is bad. I blew the valve out with my air compressor a couple of days ago. I removed the plug today and it still had pressure behind it. Has anyone had this type of problem. Thanks Pearl02.

 

[GodAmGT00]

I'm thinking you're correct in the Vent Valve being bad. I've never had any type of pressure in the diff. that I've been able to measure...

I think the valves are cheap too, so it could be a good idea... It's a lot easier than having to swap out pinion seals and axle shaft seals all the time...



JT

 

[donsbad68]

vent valves arent very cheap ford rapes you to the tune of 18 bucks i believe if i remember

 

[Mike97gt]

I would replace the vent valve.

 

[GodAmGT00]

vent valves arent very cheap ford rapes you to the tune of 18 bucks i believe if i remember

Well, it's either that, or pay a few hundred $$'s to rebuild your rear diff when the seals blow..



JT

 

[stangGT97]

sorry I can't really contribute to this but... rear end specialist? is that like an assman?

 

[Pearl02]

sorry I can't really contribute to this but... rear end specialist? is that like an assman?

Some how I knew that was coming . I have the old rearend from my Mazda B. It dosen't have the vent valve but a vent tube. Can I use that until I can get a new vent valve? I'll have to rig up some hose but I thiink it would work. Thanks Pearl02.

 

[Pearl02]

Some how I knew that was coming . I have the old rearend from my Mazda B. It dosen't have the vent valve but a vent tube. Can I use that until I can get a new vent valve? I'll have to rig up some hose but I think it would work. Thanks Pearl02.

Will this work. Thanks Pearl02.

 

[GodAmGT00]

I don't know.. Does the Mazda have the 8.8??


I'd have a tough time testing it though, since you'd have 1 of 2 things happen:

- It could work, and you may not need to purchase a new vent valve (sort of unlikely)

- It could fail, and you spew a few quarts of gear oil all over the road, and then have to refill you diff. along w/ re-sealing it...


It is Saturday, could be a good day to give it a try..



JT

 

[Pearl02]

I don't know.. Does the Mazda have the 8.8??


I'd have a tough time testing it though, since you'd have 1 of 2 things happen:

- It could work, and you may not need to purchase a new vent valve (sort of unlikely)

- It could fail, and you spew a few quarts of gear oil all over the road, and then have to refill you diff. along w/ re-sealing it...


It is Saturday, could be a good day to give it a try..

Yes, the Mazda has a 8.8 rearend. The Mazda is a Ford Ranger rebabged. I also have those concerns about spiting out fluid all over the road. I'm just looking at this for a temp fix until i can get a new vent valve. Thanks Pearl.

 

[GodAmGT00]

I realize the Mazda is a Ranger, but some of them came w/ the 7.5", not the 8.8 and I thought that the 7.5's came w/ the vent tube..



JT

 

[Pearl02]

I realize the Mazda is a Ranger, but some of them came w/ the 7.5", not the 8.8 and I thought that the 7.5's came w/ the vent tube..



JT

Yes, the 4 banger and the 3.0 litre V6 has the 7.5. My B4000(4.0 litre) has a 8.8 rearend. I swoped rearends 4 yrs ago. I wanted something with limited slip and better gearing. There's nothing wrong with old rearend. It's complete with axles. I believe Ford went with a vent valve on the Mustang because it looks neater and cleaner on the rearend. Don't quote me on that. Pearl02.

 

[nwapache]

oops sorry, wrong specialty