OEM 2005 Toyota Tundra Brake Proportioning Valve

2005 Toyota Tundra Brake Proportioning Valve Parts Q&A

• Q: How to service and repair a Brake Proportioning Valve on 2005 Toyota Tundra?

  A: The service procedure for the Load Sensing Proportioning and By-Pass Valve (LSP & BV) starts by disconnecting shackle No.2 from its bracket through bushing removal until shackle No.2 comes off along with taking out the 2 bushings and collar and finally the 2 bolts and shackle bracket. Use Special Service Tool: 09751-36011 to disconnect the 3 brake lines from the valve body. Then, remove the LSP & BV assembly after disconnecting its 2 valve bracket mounting bolts. The Blend Proportioning Valve requires three securing bolts to be removed after disconnecting the four brake lines when a torque of 29 Nm (296 kgf-cm, 21 ft. lbs.) has been achieved. Install the LSP & BV assembly by first placing its position and then securing it using the 2 valve bracket mounting bolts while torquing to 29 Nm (300 kgf-cm, 22 ft. lbs.). Specially designed tool 09751-36011 is used to connect the three brake lines where torque must be set to 15 Nm (155 kgf-cm, 11 ft. lbs.). Secure dimension A to 120 mm (4.72 inch) then fasten the lock nut to 13 Nm (130 kgf-cm, 9 ft. lbs.) afterward add the shackle bracket followed by 2 bolts secured at 29 Nm (300 kgf-cm, 22 ft. lbs.). Insert the shackle bracket by connecting its bushings with collar and shackle No.2 while tightening it to 13 Nm (130 kgf-cm, 9 ft. lbs.). Install the cushion retainer and its matching nut. Position the valve body by manually pulling down the load sensing spring which should move valve piston down smoothly until the piston lightly touches the spring. Tighten its mounting nuts to 13 Nm (130 kgf-cm, 9 ft. lbs.). Brake line bleeding must occur before checking and adjusting fluid pressure levels of both the LSP and BV.