Toyota Hilux Surf 1993 Owner's Manual page 637

SUSPENSION AND AXLE –
DISASSEMBLY OF DIFFERENTIAL
(See page SA–134)
HINT: If the differential is noisy, perform the following
preinspection before disassembly to determine the
cause.
If the differential has severe problems, disassemble and
repair it as necessary.
1. CHECK RING GEAR RUNOUT
If the runout is greater than maximum, install a new ring
gear.
Maximum runout:
7.5 in. 0.07 mm (0.0028 in.)
8 in. 0.10 mm (0.0039 in.)
2. CHECK RING GEAR BACKLASH
If the backlash is not within specifications, adjust the
side bearing preload or repair as necessary. (See step 8
on page SA–147)
Backlash: 0.13 – 0.18 mm (0.0051 – 0.0071 in.)
3. INSPECT TOOTH CONTACT BETWEEN RING GEAR AND
DRIVE PINION (See step 9 on page SA–149)
Note the tooth contact position.
4. (2 PINION TYPE)
CHECK SIDE GEAR BACKLASH
Measure the side gear backlash while holding one pinion
gear toward the case.
Standard backlash:
0.05 – 0.20 mm (0.0020 – 0.0079 in.)
If the backlash is not within specification, install the
proper thrust washers.
5. MEASURE DRIVE PINION PRELOAD
Using a torque meter, measure the preload of backlash
between the drive pinion and ring gear.
Preload (starting):
7.5 in.
0.6 – 1.0 N–m (6 – 10 kgf–cm, 5.2 – 8.7 in.–Ibf )
8 in.
(2 pinion type)
0.9 – 1.3 N–m (9 – 13 kgf–cm, 7.8 – 11.3 in.–Ibf )
(4 pinion type)
0.5 – 0.8 N–m (5 – 8 kgf–cm, 4.3 – 6.9 in.–Ibf)
Differential
SA–137