Vibrations and missing oil? - Kia Forum

 
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post #1 of 3 (permalink) Old 05-07-2019, 04:58 AM Thread Starter
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Vibrations and missing oil?

Hi;

I recently replaced my sportage's (2014 AWD 2.4L ) front axels.
I had vibrations @ high and low speeds .
I note that I'm not aware how things are connected "front wheels to gear box or to another part of the AWD system"

two things noticed :
1- While replacing the axles, one (on the right) had surface rust on the coupling where it connects to the gearbox\AWD. the coupling inside the gearbox\AWD had the same rust. there was no oil spillage when the axle was removed. I was notified once before that the AWD box is dry\has no oil and that some where put in (they were inspecting the axles). This time no one noted anything and the surface rust was treated with WD40.

2- Vibrations went away , at least most of it, I still experience some vibrations between 120-140 KM\hr

I note that : Tie rods, sway bar links, and wheels are brand new. Gear box oil recently replaced. Wheel balancing done approx. 3 months back.

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post #2 of 3 (permalink) Old 05-07-2019, 04:11 PM
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The axles go into a housing with the differential in side, this housing is part
of the gearbox and is lubricated by gearbox oil, there is a seperate , assembly
sometimes referred to as a PTO, or power take off, and this has its own oil,
from the pto a drive shaft goes to the rear differential, this to has its own oil,
just in front of the rear diff is the coupling devise that controll how much
drive goes to the rear diff/wheels and it to has its own oil

( that’s why I bought a front wheel only drive, much simpler)

I would say it’s highly unlikely front drive shafts would cause vibrations,
unless The cv joints were worn out, and then you would have heard then
clacking away When you turned corners

Firstly I would confirm ALL oil levels are correct, then look at tyre diameters
These soft road cars are notorious for chewing up rear diffs,couplers and pto,s
If not maintained

Additionally have you had all your tyres balance checked

Good luck

Last edited by kiama; 05-07-2019 at 04:14 PM.
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post #3 of 3 (permalink) Old 05-09-2019, 02:45 AM Thread Starter
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eh, it is complicated... I still didn't get if what happened (no oil spillage) when the axles were removed is normal, and why the surface rust was there? (does it indicate that at some point in time it was covered in lubricants\oils?
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