Thursday , 28 March 2024

Axial EXO Terra Build – Part 4 – Center Differential

CompetitionX Build Blog

Axial EXO Terra Build
Axial EXO Terra Build

The Build – Part 4
In part 4, we assemble the center differential. Depending on the power you plan and running through your EXO, you can change this oil to help balance the front/rear drive ratio.

Build Notes:
The center differential build is much the same as the front and rear diffs. Having some clean towels handy will help with clean up.

Axial EXO Terra Build - Step 40
Axial EXO Terra Build - Step 40
Slide the red o-rings over the outdrives. A dab of diff fluid will help keep them lubed.

Axial EXO Terra Build - Step 41
Axial EXO Terra Build - Step 41
Press the bearing onto the differential housing. It should be a snug fit and should sit flush as shown.

Axial EXO Terra Build - Step 42
Axial EXO Terra Build - Step 42
Insert an outdrive through the housing and slide another red o-ring over outdrive.

Axial EXO Terra Build - Step 43
Axial EXO Terra Build - Step 43
Align the flat spots on the outdrive and spider gear and slide the gear into place.

Axial EXO Terra Build - Step 44
Axial EXO Terra Build - Step 44
Snap the e-clip into place. As we did with the front and rear diffs, a dab of diff fluid will help keep the e-clip in place while you lock it to the outdrive.

Axial EXO Terra Build - Step 45
Axial EXO Terra Build - Step 45
Slide the small spider gears over the input shaft as shown…

Axial EXO Terra Build - Step 46
Axial EXO Terra Build - Step 46
…and drop it into place within the diff housing. Rotate the outdrive to seat the gears if they don’t push all the way into place.

Axial EXO Terra Build - Step 47
Axial EXO Terra Build - Step 47
Press the bearing onto the diff gear as shown.

Axial EXO Terra Build - Step 48
Axial EXO Terra Build - Step 48
Flip the diff gear over, insert the other outdrive and slide the red o-ring into place.

Axial EXO Terra Build - Step 49
Axial EXO Terra Build - Step 49
Align the flat spots on the outdrive and spider gear and slide the gear into place.

Axial EXO Terra Build - Step 50
Axial EXO Terra Build - Step 50
Snap the e-clip into place. This side is much easier to work with so you probably won’t need the diff oil to hold the e-clip in place.

Axial EXO Terra Build - Step 51
Axial EXO Terra Build - Step 51
Press the diff gasket into place as shown. If it slides off, a dab of diff fluid on it should help keep it in place.

Axial EXO Terra Build - Step 52
Axial EXO Terra Build - Step 52
Fill you differential to about 85% with the provided fluid. Rotate the outdrive a couple turns to help circulate the diff fluid thoughout the housing. Let it stand for a minute or so and then refill to about 90% with the fluid.

Axial EXO Terra Build - Step 53
Axial EXO Terra Build - Step 53
Attach the diff gear to the housing by aligning the pegs in the gear to the slots in the housing. Secure with the four screws.

Part 5 – Assembling the chassis.
Back to the Axial EXO Terra Build List

About Tony Phalen

Tony Phalen - As an avid RC enthusiast, Tony has been building, bashing and racing RC Cars for over 30 years. He has participated in every kind of surface racing events - 1/18 scale trucks, 1/10 scale TC, Rock Racers, Rally - if it had wheels, he's raced it! He's also worked on both sides of the industry fence; collaborating with many major manufacturers (as well as being a sponsored driver) to working for a high-profile industry magazine. During this time he has learned many tricks, tips and techniques and is sharing that knowledge on CompetitionX - the most informative RC website on the internet!

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