1. GEAR DIFFERENTIAL & FRONT SOLID AXLE
1. GEAR DIFFERENTIAL & FRONT SOLID AXLE
964031
S 3.5x10x0.2
971240
O 24x0.7
903256
SFH M2.5x6
Tighten the screws equally
but do NOT tighten them
completely
DETAIL
DETAIL
Finish tightening in this
order
➊
➋
➌
➍
After disassembling the gear diff the large O-ring may have
an increased size and may be more difficult to re-install.
We recommend either inserting the old O-ring carefully in the
diff cover, or replacing the old O-ring with a new O-ring if the
old one cannot be made to fit properly.
Fill differential up to the top of the diff pin. DO NOT fill
the diff to the top of the housing.
➊ Put the diff (without oil) on the scale and check the
weight (approximately 7.90g)
➋ Slowly pour oil into the diff and watch the weight. Add
1.3g of oil into the diff. The approximate weight of the diff
+ oil is 9.20g.
600cst
700cst
800cst
softer oil increases rear traction,
harder oil increases on-power steering.
NOTE
ORIENTATION
900cst
1000cst
2000cst
To increase on-power steering and
cornering speed, the gear diff can also
be used in the front. Note: If you use the
gear diff in the front, we recommend
using optional #304971 HUDY Spring
Steel™ outdrives because the stress on the
outdrives in the front is much higher than
in the rear.
300,000 cst
To make the front differential tighter, you can
use cleaning gum instead of oil. IMPORTANT!
Using cleaning gum instead of oil in the gear
differential can lead to gear breakage because
the gears are working under dry conditions.
#107865
HUDY Ultimate Digital Pocket
Scale 300g±0.01g
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