Subaru Forester 2.0 MT Viscous coupling / centre diff rebuild and testing скачать в хорошем качестве

Subaru Forester 2.0 MT Viscous coupling / centre diff rebuild and testing

European Subaru Forester X 2.0, 2004, 5-speed manual transmission (with low range). Stock LSD in the rear diff. 310,000 km on the odometer. The car is stock except for a 2.5" lift kit and a homemade steel bashplate. Tires are Toyo Open Country A/T III 195/80/R15. Since I use the car for offroad trips, I wanted a stronger 12 kg diff. The VCs from ’99 onward are the same type, as I read online, except for the newer Subarus nowadays. As far as I know, the stock VC is 4 kgf/100 rpm. It was still working, but not very strong; when heating up, the “hump” locking effect worked, but it took a long time. After searching online, I had a hard time figuring out what viscosity Subaru uses stock. I guess around 100,000 cSt. After seeing multiple people online rebuild their VCs, I decided to go for 300,000 cSt (brand: Tornado silicone oil/grease). I made this video just to share my findings with the great Subaru community. Rebuilding the VC took me about 8 hours. I used 50 ml to fill the VC. When sealing the unit, a little came out of the two “ball bearing breather holes.” There is a good air pocket underneath the first “thick” ring — about 12–15% is normal apparently. The air pocket is very important to let the silicone oil expand when heating up to operating temperatures. When the air pocket is “consumed,” the pressure rises greatly, increasing friction and “locking” the diff, hence protecting itself from heating up further. Note that in this video, all tests were done with a cold VC. The viscosity varies a lot with temperature: 300,000 cSt at 25 °C is more like 450,000 cSt at 15 °C. Hence the strong locking effect after refitting the VC. Afterwards, I drove slowly on wet grass full lock as a test. I didn’t notice a difference compared with the stock VC. Same on the road (roundabouts) in wet conditions driving home. The second “weight” test took about 8 times as long as the first one. So that would bring my VC to a ~20 kg rating more or less. Hard to tell — what do you think? Testing the rebuild VC warmed up.:    • Subaru Forester 2.0 MT Viscous coupling / ...   “This is a DIY demonstration for educational purposes only. I am not responsible for any damage or injury if you attempt this repair. Always consult a factory service manual or a professional mechanic before performing maintenance on your vehicle.”