3 minute read

Diff Breather Mod for Dummies (Pics)

Compliments of Neubs @ tacomaworld.com

10-2-2008

I did the diff breather mod today and figured I would post a quick "how to" for anyone who is considering doing it. It is a simple quick mod. 

Everything you need: 

1. Toyota Part numbers:90404-51026 Camary Union and 90930-03136 (Breather Union)

2. Drill

3. 3/8" drill bit

4. Teflon tape

5. 6' of 1/4" fuel line

6. Screwdriver (flat head)

7. 14mm and 10mm wrenches

8. Hose clamps

9. Zip-ties

10. Wirecutters or razor knife

11. Can of Skoal 

12. Ice cold beer (optional)

Step 1: Take old breather out using 14mm wrench

Step 2: Wrap new fitting with teflon tape.

Step 3: Install new fitting/union using a 10mm wrench.

Step 4:Remove cubby to gain access to fuel filler (Pull up and out)

Step 5: Drill mounting location for new breather.

Drill bit poking through:

Step 6: Install new breather.

A look from the inside.

Step 7: Attach the new fuel line and tighten clamp (using a little dish soap will aid in sliding the line on the new breather). I ran the line parallel with the filler neck and drown the frame rail not out the bed pocket as pictured)

Step 8: Run the 1/4" fuel line and use zip ties to secure it. 

Step 8: Install and tighten final clamp and be sure to leave enough line for axle movement. 

Step 9: Re-install bed pocket and you are done! Enjoy a cold beer.