Tacoma & Tundra
- For testing purposes, rear axle is loaded to a specified weight. Set total rear axle weight to specified amount. See LSPV REAR AXLE TEST WEIGHT table.NOTE: DO NOT depress brake pedal more than once or release pedal while setting pressure on front gauge.
- Attach pressure gauge set to front caliper and rear wheel cylinder or caliper. Bleed air from system. See BLEEDING BRAKE SYSTEM . Depress brake pedal until front pressure is as specified. See LSPV PRESSURE SPECIFICATIONS table. Wait 2 seconds and record rear pressure reading.LSPV REAR AXLE TEST WEIGHT
Application Lbs. (kg) Tacoma 2WD 1543 (700) 4WD 1874 (850) Tundra V6 Engine (5UZ-FE) 2205 (1000) V8 Engine (2UZ-FE) 2315 (1050) 4Runner 2033 (922) LSPV PRESSURE SPECIFICATIONSApplication Front Pressure - psi (kg/cm2 ) Rear Pressure - psi (kg/cm2 ) Tacoma 2WD 1138 (80) 640-782 (45-55) 4WD 1138 (80) 569-711 (40-50) Tundra 1138 (80) 670-812 (47-57) 4Runner 996 (70) 393-563 (28-40) - Adjust rear pressure by changing length of No. 2 shackle (if necessary). See Fig 1. To increase rear pressure reading, increase distance "A". To decrease rear pressure reading, decrease distance "A".
- Repeat pressure tests after adjusting shackle length. If rear pressures fail specification after adjustment, reposition valve body. Raise valve body if rear pressures are too high, lower valve body if rear pressures are too low.
- Ensure No. 2 shackle length is within adjustment range. If shackle is removed or replaced, adjust No. 2 shackle to standard length. See NO. 2 SHACKLE LENGTH SPECIFICATIONS table.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NO. 2 SHACKLE LENGTH SPECIFICATIONSApplication Standard Length - In. (mm) Adjustment Range - In. (mm) Tacoma 2WD 3.07 (78) 2.83-3.31 (72-84) 4WD 4.72 (120) 4.49-4.96 (114-126) Tundra 4.72 (120) 4.41-5.04 (112-128) - If pressures cannot be adjusted to specification, check valve housing. Position valve body in uppermost position. Apply brakes and record rear brake pressures. See VALVE BODY ADJUSTMENT PRESSURE SPECIFICATIONS (TACOMA & TUNDRA) table. If measured value does not meet specification, replace valve assembly.
VALVE BODY ADJUSTMENT PRESSURE SPECIFICATIONS (TACOMA & TUNDRA)
| Application | Front Pressure - psi (kg/cm2 ) | Rear Pressure - psi (kg/cm2 ) | ||
|---|---|---|---|---|
| Tacoma | ||||
| 2WD | ||||
| 1st Reading | 285 (20) | 285 (20) | ||
| 2nd Reading | 570 (40) | 327-384 (23-27) | ||
| 3rd Reading | 998 (70) | 412-512 (29-36) | ||
| 4WD | ||||
| 1st Reading | 213 (15) | 213 (15) | ||
| 2nd Reading | 570 (40) | 256-313 (18-22) | ||
| 3rd Reading | 998 (70) | 320-420 (23-30) | ||
| Tundra | ||||
| 1st Reading | 213 (15) | 213 (15) | ||
| 2nd Reading | 569 (40) | 263-377 (19-27) | ||
| 3rd Reading | 1990 (140) | 682-852 (48-60) | ||