Landcruiser AWD L6-4.5L (1FZ-FE) (1997)
Differential Carrier: Testing and Inspection
Front Differential Carrier
1. To check the runout of companion flange use a dial indicator to measure the vertical and lateral runout of the companion flange. The maximum
runout allowed is 0.10 mm (0.0039 inch).
2. Check the ring gear runout by using a dial indicator and measure the ring gear runout. The maximum runout allowed is 0.10 mm (0.0039 inch). If
the runout is greater than the maximum, replace the ring gear and driven pinion as a set.
3. Check the ring gear backlash by using a dial indicator and measure the ring gear backlash. the backlash should measure 0.13 - 0.18 mm (0.0051 -
0.0071 inch). If the backlash is not within the specification, adjust the side bearing preload or repair as necessary.
4. Measure the drive pinion preload by using a torque wrench. Measure the preload of backlash between the drive pinion and ring gear, it should
measure at 0.5 - 0.8 Nm (4.3 - 6.9 inch lbs.).
5. Using a torque wrench, measure the preload. Total preload (at starting) should be 0.4 - 0.6 Nm (3.5 - 5.2 inch lbs.). If necessary, disassemble and
inspect the differential.