1999 mercedes 722.6

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gsferraro
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1999 mercedes 722.6

Post by gsferraro » Wed Jul 15, 2015 3:10 pm

Question, This car delays when cold in drive, it kinda acts like its low on fluid but its full(i have the tool to check the fluid)When the car is hot you would never know there is a problem, it works nice, seems only after it sits a few hours. Thoughts on this please, (drainback maybe?) The wholesale account this came from put a radiator in the car, could he have left something out causing drainback? Thanks

gsferraro
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Re: 1999 mercedes 722.6

Post by gsferraro » Thu Jul 16, 2015 7:43 am

Hello,
Update on this car, We kept the car overnite, started it up this morning and it delayed in drive only not reverse, put the car in low and same thing, delay and bangs into gear, when warm it seems ok. Gary

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tranibob
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Re: 1999 mercedes 722.6

Post by tranibob » Thu Jul 16, 2015 12:39 pm

At least you know it is not a fluid level issue or drain back issue. Probably best to start with an RDI and see what yo find in there.
Robert Moreau
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Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

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gsferraro
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Re: 1999 mercedes 722.6

Post by gsferraro » Tue Jul 21, 2015 1:52 pm

Update,
Trans is coming out, will let you know what i find. Gary

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Re: 1999 mercedes 722.6

Post by gsferraro » Fri Jul 24, 2015 6:36 am

Hello,
Got the trans out, nothing really jumps out at me to say i found the problem, some orings seem alittle flat but other than that i dont see too much. This also has the scarf cut rings so i will be updating those. Any other suggestions would be great. Thanks Gary

zzyzxpat
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Re: 1999 mercedes 722.6

Post by zzyzxpat » Fri Jul 24, 2015 7:29 am

Make sure you replace both sprag elements. Check the VB for a broken pressure spring, common on early units.

http://www.sonnax.com/parts/2313
Pat Schulte
AAMCO Transmisssions
Temecula, Ca.

gsferraro
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Re: 1999 mercedes 722.6

Post by gsferraro » Fri Jul 24, 2015 8:04 am

Thanks Pat,
I checked the spring, that was good but i will be replacing that as well as the sprags. Pat, The molded piston in the pump area and the plate(sits inbetween the stator abd bell) do you replace those items on every overhaul? Thanks Gary

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Re: 1999 mercedes 722.6

Post by zzyzxpat » Fri Jul 24, 2015 8:15 am

Yes, I usually replace those. There have been times when I didn't, but they are not that expensive.

The plate usually comes with the kit. There 2 different height molded pistons. The only difference in apply elements between drive, 1st gear, and reverse, is the B2 brake (clutch). That is where I suspect your problem is.
Pat Schulte
AAMCO Transmisssions
Temecula, Ca.

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Re: 1999 mercedes 722.6

Post by gsferraro » Fri Jul 24, 2015 9:48 am

Thanks for the info pat, with the research i did i was looking closely at the B2 as well. I will let you know how it turns out. Gary

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tranibob
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Re: 1999 mercedes 722.6

Post by tranibob » Fri Jul 24, 2015 8:15 pm

It always sucks when you can't see anything in there.

But since reverse worked fine, and it did it only cold, you know it has to be a sprag or a seal somewhere so I like Pat's advice on this one.
Robert Moreau
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Sonnax Industries, Inc.
Laguna Beach, CA 92651
rmm@sonnax.com

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