Final drive oil

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hotflash44
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Re: Final drive oil

Post by hotflash44 » Sun Apr 09, 2017 9:20 pm

Ural ct, do you think that when the fd is cool and you drain and replace the drain plug there is still a small amount of oil still in the case, might be but i add 135ml and check the stick the screw in method and the level is right on. im just thinking that in my case going down the freeway at 55 with a monkey and a 30mph head wind might have caused the oil to flip up to the vent and a few drops came out. only 800 miles never did before and didn't do it on the way back home down wind. what ever no biggie, thank for your input though.
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Re: Final drive oil

Post by URAL CT » Sun Apr 09, 2017 10:15 pm

hf44, I run the highway all the time, reason I took the SC driveshaft out cuz I don't do off-road any longer. Gettin' too old for them shinanigans. :P FD seem to last longer now, I cooked 7 FDs between 2009 to 2014.
Next time you change the FD oil, let it drain like you normally would & place the drain plug back in place but don't add oil yet. Next morning/day, remove the drain plug...you'll see additional oil come out. I found this out by chance, I was a done draining the FD oil when I got an important phone call I had to attend to, so I put the drain plug back on. Too late after I got yaking & was gonna finish the job the next day. When I pulled the plug out, more oil drained out (a lot, IMO)...hmmm. So I cleaned the drain plug, by then no more drip, installed & tighten it. Then I thought...I'll measure & pour 4.5oz FD oil & see what happens. No puking from the breather even at prolonged highway speed (50/55 Ural mph). Haven't puke oil from the breather since. When you add 4.5oz as the manual says, the oil level (in my case) is always above the top hatch mark. Remember I have a 2WD FD...lots of nooks & crannies in there, maybe takes the oil longer to get down. When traveling, I always check the oil levels every morning before scooting off for the day. Try this method & report back, pls...I'm curious too. :? Works for me but??? :foilhead:
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Re: Final drive oil

Post by roscoau » Mon Apr 10, 2017 3:35 am

hotflash44 wrote:check the stick the screw in method and the level is right on
The way to check the oil is with the dipstick sitting on top of the threads - NOT screwed in. Is that what you meant?
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hotflash44
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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 7:16 am

not according to the manual the engine you check with the stick not screwed in the trans has no stick,so.9l or bottom of threads,and the final drive stick screwed in to check 135ml shows exactly when i check.
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Re: Final drive oil

Post by Lee Pape » Mon Apr 10, 2017 9:56 am

I believe if you re-read the manual that the 135 ml is for the 2WD Urals. The 1WD drive finial drive only take 100 ml of oil. Unless Ural made a mistake in the manual again. This was the case for a few years in teh early 2000's where they flipped these values around.
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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 10:06 am

mine is 2wd, was the original post for 1wd? 135ml for mine!
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Re: Final drive oil

Post by Buckhorn » Mon Apr 10, 2017 11:15 am

My 2013 GU manual says that after draining, replace plug, fill with 20W-50 oil, rotate the rear tire to distribute oil, and then drain. I let mine drain overnight as others have suggested. This must thin out the gear oil and flush out fine particles. Replace the drain plug and fill with the amount specified in your manual. This seems to work good, with nothing spewing out of the vent.
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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 11:41 am

good thought, after all 135ml of gear oil is costly.
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Re: Final drive oil

Post by chaos2 » Mon Apr 10, 2017 12:31 pm

Buckhorn wrote:My 2013 GU manual says that after draining, replace plug, fill with 20W-50 oil, rotate the rear tire to distribute oil, and then drain. I let mine drain overnight as others have suggested. This must thin out the gear oil and flush out fine particles. Replace the drain plug and fill with the amount specified in your manual. This seems to work good, with nothing spewing out of the vent.
Pete
+1, I read it to fill the housing TO THE TOP with 20-50, about 15-18oz with my 2wd. I think the reasoning here is to flush areas that normally don't get bathed in oil. I have a milk jug of 20-50 MobilOne I keep and reuse just for the final drive flush.
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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 12:52 pm

you don't reuse with the micro particles in it do you? im not that cheap, but i put the cleaner used oil in my squirt oil cans. Back in the day when oil was 15 cents a quart ,the mechanic never through it away, recycle what the heck does that mean. When i was a kid i had a used oil hole next to the house. I thought i was helping the planet by putting the oil back where it came, slightly used of course.
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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 8:11 pm

i took someones advice said to come from the Ural bible,drained the fd oil put in some 20w50 rotated the wheel and drained,a small amount of stuff,as for new oil 85x90w 135ml is only a squirt i carefully used a pitcher with ml marks to fill. still cant wrap my menopausal brain around that small amount of gear oil. guess the ring gear gust has to flip the grease/ 90w oil up and all over the other parts.probably pretty intense inside the housing.
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Re: Final drive oil

Post by chaos2 » Mon Apr 10, 2017 8:51 pm

That seems like an insanely small amount of oil for the final drive. It's self leveling, anything over that you put it it spits out the vent. I splurge on RedLine for it since one quart is good for about 9 changes.
past afflictions include limey motocars and bikes, R60/2, R65ls, and a Citroen.
Now an 87 K75s, DB Haanjo gravel bike, and a rusty 2012 GU bought new
dual K&N cones on homemade intake, 40/137.5
Raceway needles, Modtop exhaust
$29 VW Hydraulic steering dampener

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Re: Final drive oil

Post by hotflash44 » Mon Apr 10, 2017 9:20 pm

smart, chaos2, is the redline fd oil rated at 85w 90w or what? how long have you used it? Any noticeable good especially on the change, like metal suspended or on the plug.
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Re: Final drive oil

Post by Daytripper » Tue Apr 11, 2017 2:29 am

I bought a couple of 150 ml from amazon, I was going to add a link, but they are out of stock


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Re: Final drive oil

Post by URAL CT » Tue Apr 11, 2017 10:05 am

I use a 5oz or 6oz glass measuring cup I got from the baby section of the grocery store. Picked up a plastic ketchup dispenser too. I measure 4.5oz of FD gear oil, pour it into the ketchup dispenser & squirt the 4.5oz content into the FD filler opening. No mess & small enough to take with you.
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