Savage X 4.6 diff maintenance

[Nihal]

Hi Guys,
I'm doing maintenance for the diffs for the first time and would like your recommendation on the diff oil use. I'm just a light basher.

 

[Jam Racing 1]

oils are mostly for racing duties, I pack my diffs with tacky hi temp red grease.... one tube will last for hundreds of diff rebuilds and it works well.......

 

[mikelh]

I use silicone diff fluid 3-5K in rear and 5-10k in front because I always have those weights on hand for tuning my buggy diffs. Grease gives diff action a little more free than 3K silicone give or take.

 

[Nihal]

Thanks guys
And for the cleaning of the diffs, others then denatured alcohol what others can be used?

 

[mikelh]

I use Dawn dish soap to clean gears, cases, etc. I also use it to clean air filters. It really does cut the grease and its mild and cheap.

 

[olds97_lss]

I use Dawn dish soap to clean gears, cases, etc. I also use it to clean air filters. It really does cut the grease and its mild and cheap.

+1 to that. Soap and water with a toothbrush works the best, unless you don't mind using gasoline and an old paint brush. I hate the smell of gas and I doubt my wife would like me putting a small bucket of petro in the sink to do anything with. Apartment life is fun. lol

I run 50K in both the front/rear diffs on mine. As a basher, I like some power to get to all my tires even if I'm high centered on something. 50K doesn't lock the diff, but it does make for fairly strong positraction.

 

[tert]

I also tend to use fairly high viscosity oil in both front and rear. Currently I`m running 60K in the rear and a mix of 30 and 60K in the front and I really like this setup.

 

[Caretaker109]

For cleaning I often use brakecleaner.

50K in front and 30K in the rear..

 

[Nihal]

Thank you guys.

 

[Nihal]

Hi guys
The main reason for me to tear down the savage is that my truck became 2 wheel drive all of a sudden.
When I break only the back wheels lock up while the front was free. After investigation I realise that a lock nut is missing as seen in the pic. Now my question is why did it happen? Very sorry as I'm puzzled.

 

[Caretaker109]

Lock nut?
You are missing a screw shaft..
Not sure what size but one of these 2.
http://www.hpiracing.com/en/part/86094

I think you need these http://www.hpiracing.com/en/part/86095

 

[Nihal]

Sorry for the description,
Yes screw shaft, I did not know there were 2 sizes?? I looked at the manual and it says as 86094

 

[X]

Now my question is why did it happen? Very sorry as I'm puzzled.

Very common for those pins/ screws to come out. If there wasn't thread locker on them it only takes a little vibration to work their way out. Put some blue thread locker on it when you reinstall.

 

[Nihal]

Thanks. Will do do
I got 1 more question
Currently I'm running on stock wheel hub which is 17mm hub with 8mm flange nut. I want to have 17mm nut. What must I get. Do I need to upgrade the axle as well or do I just get the 17mm hub with the nut.

 

[Jam Racing 1]

https://www.rcplanet.com/HPI_Hub_He...mpaign=scn_618566f33e93a000&_sgm_action=click

 

[Nihal]

Thanks Jam for the link. Able to get from LHS and fixed it up together with the diffs and shocks. Did a test run yesterday and it was great. But i found another issue after i took a tumble, I nearly lost 2 shock caps as they were out of place. How do you keep them in place?