Arrma How-to: 3S and 4S diff rebuild, how to replace gears, bearings, grease and differential fluid. In this video,I will demonstrate with great detail how to remove the gears, bearings and fluids in a 3S or 4S Arrma RC car differential gearbox. I will transfer all gears from a stripped main gear case to a brand new Arrma stock replacement. Then I will show you how I grease the input gear and the main gear. In this video, you will alao see a full disassembly from removing the motor module and back to it's fully re-assembled state. This task can seem overwhelming at first but I will guide you through the process and am sure you will learn plenty today. I've included chapters in the video so you can navigate through the video to your liking.

Parts used: 13T Input Gear ARA311031
37T Diff Case Main Gear AR310872
Team Losi 20000 cs Diff Oil

Wiha Mini Pry Bar (lifter)-26810 https://www.amazon.ca/dp/B00433SJB2/r...

Tools: Neewer - Set of 4 Hexagonal Screwdrivers Made of Titanium Nitride with Coloured Handles.Compatible with 1.5, 2, 2.5 and 3mm Screws. https://www.amazon.ca/dp/B00CP2GGBI/r...

#arrmarc #rccar #3sdifferential #3sarrma, #4sarrma

0:00 Intro
0:22 Parts Needed
1:04 Accessing Differential
3:25 Disassemble Differential
8:35 Fill Differential Fluid
9:16 Re-Assemble Differential
10:26 Add Shim Then Bearing On Gear Side
10:47 Grease Input And Main Gear
11:33 Connect Driveshafts
12:10 Re-assemble RC
14:07 Install Motor Module

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