Brake Caliper Leaking from Bleeder Screw

looks like the front valves are size M7 x 1.0 and the rears are M10 x 1.0, these are the sizes for RUSSELL speed bleeders they should also work for others I think

 

Or, "Let's get two $300 calipers because there are several unknowns with the existing fit, and I'd like to know that I can stop safely in an emergency should it be required and being alive is better than being dead."

 

I really don't think anyone is going to die, its quite obvious that OP wants to fix the brake valve leak by using a low cost option first before investing in a new caliper since he is going to sell the truck and don't want to unnecessarily invest a lot of money if a new bleeder of the right size and fit will do the trick, lighten up

 

Depresses pedal, fluid leaks out bleed screw... hmmm... what's necessary, not necessary... who can say.

What happens if he sells the truck, knowing there's a safety issue (and regardless of your opinion, leaking brakes are a safety issue) and the new owner gets hurt, or causes someone to be hurt? The bus-bench lawyers will be lining up around the clock to sue the OP.

 

what if he just needs a new valve that fits and works first, don't jump the shark Francis

 

A new bleeder screw that is proper for the truck is too small for that caliper. That caliper is a rebuilt caliper from Billy Bob’s calipers and dry cleaners. It’s anybody’s guess what they did to it or where they got it. At this point, I would be very skeptical of any Chevy, Dodge, or Yugo bleeder screw that seems to fit. Although I’m not thrilled about any factory rebuilt calipers, to me, that looks like the best solution. I don’t know where $300 calipers came from, but I’m sure you can get a reasonably good quality caliper for far less than $300.

 

Lol, people theses days dont trust themselves to fix shit, man, man up and repair your shit, instead of always paying, if he doesnt trust his caliper rebuild em for 1/4 of the price, if they aint jammed he got nothing to worry about

 

Yes it is.

 

Wrong. Teflon tape is for sealing.

https://uk.rs-online.com/web/generalDisplay.html?id=ideas-and-advice/ptfe-tapes-guide

You are not supposed to lubricate any threads before you torque. It will cause an incorrect torque value.

 

Rock auto has them for less than $100. Uncoated.

Coated for rust is at highest price each is $161.

 

A Napa reman caliper is $49.99. I replaced one a while back on my '08.

 

$66.49 here in East Tn @Napa.
At this point, that is the way I’d be going.
Then add $75 to the asking price.

 

I'd suggest adding another $25 or so and getting a PowerStop setup of both rotors, both calipers (powdercoated), pads and springs.

Or if you want stick with one caliper and use current pads, under $100 for new, well under for reman.

You need a new shopping source.

BTW, I used CAD$ for your convenience

 

Just go to a pick n pull and go grab a used caliper. $25 and you’re done.

 

You are correct on the tape but the general conscience is bolt lube even torque to yield. If nothing less it reduces gaulding of the bolt threads. A bolt has to stretch a bit to stay put.

 

I just went on Rock Auto, and a remanufactured 4-piston Tundra caliper is ~$100. Would guess the price for a Tacoma caliper is similarly priced.

 

https://www.engineeringtoolbox.com/torque-lubrication-effects-d_1693.html

When a bolt is lubricated - less torque is required to achieve bolt axial load or tension. Reduction of torques for lubricated vs. dry bolts are indicated in the table below.


Lubricant Torque Reduction (%)
No lube 0
Graphite 50 - 55
White Grease 35 - 45
SAE 30 oil 35 - 45
SAE 40 oil 30 - 40

Example - Reduction of Torque when Bolt is Lubricated
The maximum tightening torque for a slightly lubricated 1" Grade 5 coarse bolt is 483 lbf ft.
Dry bolt torque is approximately 30% higher - or 628 lbf ft.

Tdry = (483 lbf ft) (1 + (30%) / (100%))

= 628 lbf ft

If the bolt is lubricated with SAE 30 oil - the torque compared to a dry bolt is reduced with approximately 40%.

TSAE30 = (628 lbf ft) (1 - (40%) / (100%))

= 377 lbf ft

Note that if torque specified for a dry or slightly oiled bolt torque is applied to a lubricated bolt - the bolt may overload and break.

 

Replace the caliper, bleed the brakes new fluid be done with it. This is not bling bling brakes are essential. Do it right the first time.

 

I think he is selling the truck and wants it safe and low cost, if he can find a bleeder valve that can work im pretty sure this is the outcome he is looking for

 

I don't agree with this statement. I think most applications are intended to plug the tiny little spaces between the threads. I've been using it on drain plugs for decades, and not so they are easier to torque.