DIFFERENTIAL MAINTENANCE STANDARD
50-12 EX20 Series
Gear oil level: 20
Symbol
Inspection item
Judgement standard
Remedy
Standard size (mm)
Repair limit (mm)
A
Differential
and pinion
Starting torque 392–784.5 Ncm {40–80 kgcm}
3FE–21–15000
Backlash
0.15–0.2
{0.006–0.008 in}
0.15–0.2
{0.006–0.008 in}
B Outside diameter of spider, pin portrion
24.93–24.98
{0.981–0.98e in}
24.75 {0.974 in}
C Inside diameter of pinion gear
25.0–25.02
{0.984–0.985 in}
25.12 {0.99 in}
D Pinion gear
Thickness of busing
5.92–6.08
{0.233–0.239 in}
5.90 {0.232 in}
Width x depth of busing oil
groove
0.3 × 0.9
{0.011–0.035 in}
Depth: 0.7
{0.027 in}
E Side gear
Thickness of bushing
1.94–2.06
{0.076–0.081 in}
1.7 {0.039 in}
Width x depth of busing oil
groove
4× 1
{0.157–0.039 in}
Depth: 0.8 {0.031 in}
F
Differential
case side
gear boss
Inside diameter of mating
portion
60–60.03
{2.362–2.363 in}
59.98 {2.36 IN}
3FE–21–00010
Width x depth of busing oil
groove
4× 1
{0.157–0.039 in}
Depth: 0.8 {0.031 in}
3FE–21–15410
G Outside diameter of differential case boss
75.011–75.030
{2.953–2.954 in}
75 {2.95 in}
H Backlash between bevel and pinion gear
0.2–0.28
{0.0078–0.011 in}
0.28 {0.011 in}
I Runout of rear face of bevel gear
Max. 0.1
{0.0039 in}
Max. 0.1 {0.0039 in}
J
Outside diameter of drum boss portion, seal
contact surface
55 {2.165 in}
There must be no
scratches
K Inside diameter of parking brake drum
216.0–216.2
{8.5–8.51 in}
218.2 {8.59 in}
L Differential case tightening bolt 49–73.5 Nm {5–7.5 kgm}
Coat thread
with Loctite
M Bevel gear mounting bolt 157–196 Nm {16–20 kgm}
N Differential carrier support tightening bolt 490–608 Nm {50–62 kgm}
O Bevel pinion shaft locknut (W) 196–392 Nm {20–40 kgm}
P Bevel pinion shaft case tightening bolt 98–123 Nm {10–12.5 kgm}
Q Differential housing tightening bolt 245–309 Nm {25–31.5 kgm}
R Parking brake drum tightening bolt 196–245 Nm {20–25 kgm}
Coat thread
with Locite
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