Mounting of the rear differential gear
1. Press the ball bearing 12x28x8 on the differential housing.
2. Insert the differential bevel gearwheels in the differential housing as
pictured in position 1. When using the FG mounting tool Item N°.
08505 the inserting of the bevel gearwheels will be eased considerably.
3. Lubricate the diff. driving axles slightly with grease and push them in
the diff. housing.
4. Mount the diff. bevel gear axle. If the bevel gear axle resperctively
the driving axles can only be pushed in severely or if it is impossible to
push them in at any position, you have to disassemble the bevel
gearwheels again and insert them once more.
5. Lubricate the gearwheels slightly with multipurpose grease, e.g. Item N°.
06501.
6. Now press the parts on the diff. housing as described in position 1
and in the given sequence: Steel gearwheel 48 teeth ( consider moun-
ting direction of the slant), rear plastic gear disk 42 teeth, plastic stop
disk right. Fix the complete unit with the M4x40 countersunk screws
and stop nuts M4 (impress the M4 stop nuts in the plastic stop disk
right and use the screw retention high-strength).
Mounting of the front differential gear
1. For mounting of the front differential gear you have to disassemble
the differential from your 2WD model, remove diff. bushing and steel
gearwheel 48 teeth.
2. Now mount the parts on the diff. housing as described in position 2
and in the given sequence: Front plastic stop disk left (consider moun-
ting direction of the slant), front plastic toothed belt wheel 42 teeth, pla-
stic stop disk right. Fix the complete unit with the M4x40 countersunk
screws and the stop nuts M4 (impress the M4 stop nuts in the plastic
stop disk right and use the screw retention high-strength).
3. Push the bearing shafts 6x50mm centrally in the deflection roller
16mm and in the 12-teeth toothed belt wheel.
Toothed belt
wheel 12 teeth
Bearing
shaft 6x50
Bearing
shaft 6x50
Deflection roller
16mm
Front plastic
stop disk
right
Front plastic
toothed belt
wheel 42 teeth
Front
differential
Rear
differential
Right plastic
stop disk
Position 1
Parts are in
bag B
Position 2
Parts are in
bag C
Differential
Diff. driving axle
Ball bearing
12x28x8
Ball bearing
12x28x8
Screw
M4x40
Differential
housing
Differential
housing
Differential
housing
Diff. bevel
gear axle
Diff. bevel gearwheel B
Diff. bevel
gearwheel A
Steel gearwheel
48 teeth
Rear plastic gear
disk 42 teeth
Plastic stop
disk right
Plastic stop
disk right
Slant to the
inside
Slant to the
inside
Ball diff.
driving axle
Screw
M4x40
Steel gearwheel
48 Zähne
Rear plastic gear
disk 42 teeth
Stop nut M4
Stop nut M4
Stop nut M4
All metric screws need to be secured with thread lock fluid.
Reusable parts from your 2WD model have to be checked carefully on their condition, defective and worn parts
should be replaced.
Inserting of the diff.
bevel gearwheels or
of the complete
package is much
easier if you use the
FG mounting tool
08505.
Screw
M4x40
Slant to the
outside
Lubricate
slightly
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