Toyota Tundra 2005 Service - Repair - Maintenance page 2631

A
F07763 BR0218
BRAKE − LOAD SENSING PROPORTIONING AND BY−PASS
VALVE (LSP & BV)
4. IF NECESSARY, ADJUST FLUID PRESSURE
(a) Loosen the lock nut.
(b) Adjust the length of shackle No. 2.
Low pressure: Lengthen A
High pressure: Shorten A
Initial set: 120 mm (4.72 in.)
Adjustment range: 112 to 128 mm (4.41 to 5.04 in.)
HINT:
One turn of the nut changes the fluid pressure as shown in the
BR3278
following specification.
7.4 kPa (0.76 kgf/cm
(c) Torque the lock nut.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
(d) If the pressure cannot be adjusted by shackle No. 2, raise
or lower the valve body.
Low pressure: Lower the body
High pressure: Raise the body
(e) Torque the nuts.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
(f) Adjust the length of shackle No. 2 again.
If it cannot be adjusted, inspect the valve body.
F07763
5. IF NECESSARY, CHECK VALVE BODY
(a) Assemble the valve body in the uppermost position.
HINT:
When the brakes are applied, the piston will move down about
0.8 mm (0.03 in.). In this situation, do not move the piston or
make it come into contact with the load sensing spring.
F08451
(b) In this position, check the rear brake pressure.
Front brake pressure
kPa (kgf/cm
1,470 (15, 213)
3,922 (40, 569)
13,720 (140, 1,990)
If the measured value is not within the standard, replace the
valve body.
Z03643
2
11 psi)
2
, psi)
2,210 ± 390 (22.5 ± 4, 320 ± 57)
5,150 ± 590 (52.5 ± 6, 767 ± 85)
BR−55
Rear brake pressure
2
kPa (kgf/cm , psi)
1,470 (15, 213)