OFNA Racing New Differential Case User Manual
ASSEMBLY OF NEW âKâ STYLE DIFFERENTIAL CASE AND GEARS
31324 - FRONT OR REAR DIFF UNIT
31325 - CENTER DIFF UNIT
30779
2 x 12.8mm
Pin
* Position the O-ring
as shown.
30751 Diff. Case ( Front/Rear )
30761 Diff. Case (Center )
30779
2 x 12.8mm
Pin
30771
Diff. Shaft
30779
P5 O-Ring
( Orange )
30779
0.5 x 26mm
O-Ring
30769
Diff. Bevel Gear
( Large )
30779
4 x 10mm
Washer
* Apply diff. Gear grease to the
differential, during assembly.
* Fill the diff. Case to
approx 70% with grease.
Grease
30769
Diff.
Bevel Gear
( Small )
30773
4mm
Cross Pin
30769
Diff.
Bevel Gear
( Small )
30773
4mm
Cross Pin
30779
4 x 10mm
Washer
30769
Diff.
Bevel Gear
( Small )
30779
4 x 10mm
Washer
NB. It is very important to remove
the 30779 shim if the mesh
is too tight.
30771
Diff. Shaft
30769
Diff.
Bevel Gear
( Large )
ASSEMBLY OF THE BEVEL GEAR
( Builds two differentials for front and rear. )
30120
Bevel Gear
(Large/Metal)
31010
Optional - Bevel Gear
(Harden Steel)
30121
3mm
Tube
30779
P5 O-Ring
( Orange )
30121
3 x 5mm
Screw
30751 Diff. Case ( Front/Rear )
30761 Diff. Case (Center )
Sc
rew
Ceme
nt
36730
Cap Joint
90026
5 x 5mm
Set Screw
30620
7 x 19mm
Bal lbearings
90026
5 x 5mm
Set Screw
3x10mm
Tapping Screw
3x10mm
Tapping Screw
Sc
Cement
w
re
* Push 3mm tubes into
holes of the diff. Case.
* Notice the straight holes
are for front and rear.
30121
3mm
Tube
30121
3 x 5mm
Screw
(Small Head)
5 x 5mm
Set Screw
3 x 5mm
Screw
30620
7 x 19mm
Ball bearings
39730
Cap Joint
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