Specifications
57
Assembly and Installation
MAINTENANCE MANUAL
Ring Gear Runout
1. Attach a dial indicator in the differential case
mountingange.Figure5.42.
2.Adjust the dial indicator so that the plunger
or pointer is against the back surface of the
ring gear. Figure 5.42. Set the dial indicator to
ZERO.
3. Rotate the main differential case and ring gear.
Read the dial indicator. The ring gear runout
must not exceed 0.008-inch (0.200 mm).
• Iftheringgearrunoutiswithinthespecica-
tion, proceed to Ring Gear Backlash.
• Iftheringgearrunoutexceedsthespecica-
tion, remove the main differential case and
ring gear assembly from the differential case.
See the Section 3.
A. Inspect the main differential case parts, in-
cluding the differential case, for wear and
damage. Repair or replace parts as neces-
sary.
B. Install the main differential case and ring
gear assembly into the differential case.
See the procedure in this section.
C. Repeat the procedure for preload adjust-
ment of the main differential side bearings.
Check the Ring Gear Backlash
Measure the outer diameter of the ring gear for
the approximate pitch diameter. Figure 5.43.
• Iftheoldgearsetisinstalled,adjusttheback-
lash to the setting that was measured before
the differential was disassembled.
• Ifanewgearsetisinstalled,adjusttheback-
lash to the correct specication for new gear
sets.
5.Ifthedifferenceisatorwithinthespecication
in Table I: Continue by checking the runout.
• If the difference is less than the specication:
Repeat as needed.
Table I: Expansion Between Bearing Caps
TableJ:Specications
Figure 5.42
Differential models RS-140,
RS-145 e RS-160
0.050-0.229 mm
(0,002-0,009”)
RS 120 and all other differen-
tial models
0.15-0.33 mm
(0,006-0,013”)
DIAL INDICATOR
ROTATE RIG GEAR
Ring Gear Pitch
Diameter
Range of Backlash
Setting
Backlash Setting
for New Gear
Sets
Less than 17-inch-
es (431.8mm)
0.20-0.46 mm
(0,008 - 0,018”)
0,30 mm (0,012”)
Greater than
17-inches
(431.8mm)
(0.25-0.51 mm
0,010 - 0,020”)
0,38 mm (0,015”)