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Discussion Starter · #1 ·
Just had a new angel gear installed at 110K miles.<p>Cost $3100 at the dealer.<p>Car runs like new after about 18 months of hearing a whining pitch get louder and louder until it finally started to make a grinding noise. <p>At the beginning, my dealer put listening devices on the car, but couldn't say for certain it was the angle gear failing. I drove it until there was no doubt.<p>I've never had a drop of oil or transmission fluid on the garage floor, so why do these things fail?<p>My transmission, drive shaft, rear end and axles are all in good shape, according to the dealer's mechanic.
 

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Re: The dreaded angle gear (paxcam)

Dumb question:<p>Is this your XC90 or your SR? I'm asking because I wasn't aware the XC90 is susceptible to this problem.<p>Kevin
 

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Re: The dreaded angle gear (Ljungeld)

<p>Can anything be done before the problem arises to help prevent that failure? Have seen a few<br>of them fail on members cars.
 

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Discussion Starter · #5 ·
Re: The dreaded angle gear (paxcam)

And now we're back in the shop for a transmission oil leak.<p>Apparently, it's coming from the chain drive off the transmission after installing the new angle gear.<p>When I get it back, I plan on changing rotors and pads all around, plus bleeding the brake lines.
 

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Re: The dreaded angle gear (dmd)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>dmd</b> »</i></TD></TR><TR><TD CLASS="quote">Can anything be done before the problem arises to help prevent that failure? </TD></TR></TABLE><p>Change the fluids.
 

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I did a search on the angle gear problem and didnt find much info. Could someone provide any additional info or items to look for? My XC90 is CPO, would an angle gear problem be covered?<p>MagoonR: Not certain what the angle gear does or what its part of, what fluids would be associated with it?
 

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Re: (NY Volvo Lvr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>NY Volvo Lvr</b> »</i></TD></TR><TR><TD CLASS="quote">My XC90 is CPO, would an angle gear problem be covered?</TD></TR></TABLE><p>Yes.<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>NY Volvo Lvr</b> »</i></TD></TR><TR><TD CLASS="quote">MagoonR: Not certain what the angle gear does or what its part of, what fluids would be associated with it?</TD></TR></TABLE><p>Some useful info here:<p><A HREF="http://forums.swedespeed.com/zerothread?id=119347" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=119347</A><p><A HREF="http://forums.swedespeed.com/zerothread?id=81428" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=81428</A>
 

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Re: The dreaded angle gear (dmd)

Please see my two previous posts regarding the a/g and a Volvo tech article.<p><A HREF="http://forums.swedespeed.com/zeropost?cmd=tshow&id=95138" TARGET="_blank">http://forums.swedespeed.com/z...138</A><br><A HREF="http://forums.swedespeed.com/zerothread?id=102176" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=102176</A>
 

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FYI,<p>After they replaced my transmission on my 04 T6, the angle gear started leaking. Each time, they would replace the seals but would leak again. The seals were replaced 4x between the 2nd and 3rd transmission.<p>In each case, the leak was small so the fluid was contained in the underpan. I don't know why the leak was so difficult to fix - seals hard to install, damaged during install, or defective design?<p>
 

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Re: (ccc)

What makes them leak is the fact that the chain wheel housing seal is not designed to hold ATF lol. When installing the right side axle you have to be extremely careful to not even bump any of the seals. Installation error is the most common thing ive seen as to why they leak other than natural failure of the seals. Causes the housing to fill with ATF, mix with the gear oil, and slowly seap out the halves.
 

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Re: The dreaded angle gear (dmd)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>dmd</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Can anything be done before the problem arises to help prevent that failure? Have seen a few<br>of them fail on members cars.</TD></TR></TABLE><p>Don't beat on the car. Make sure your acceleration is smooth, and not jerky. Don't go WOT at low speed unless you're careful to let the AWD engage, so slowly climb RPM and then you can go WOT.
 

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Re: The dreaded angle gear (cmurphy2266)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>cmurphy2266</b> »</i></TD></TR><TR><TD CLASS="quote">Don't beat on the car. Make sure your acceleration is smooth, and not jerky. Don't go WOT at low speed unless you're careful to let the AWD engage, so slowly climb RPM and then you can go WOT.</TD></TR></TABLE><p>And change the fluid every so often (just did all my R's fluids after 5 years and 34K miles).
 

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Angle Gear<br><IMG SRC="http://i267.photobucket.com/albums/ii298/R410a/01xc/IMAGE_020.jpg" BORDER="0"><br>made of swedish dog crap
 

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Re: (ForceFed Motorsports)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>ForceFed Motorsports</b> »</i></TD></TR><TR><TD CLASS="quote">What makes them leak is the fact that the chain wheel housing seal is not designed to hold ATF lol. When installing the right side axle you have to be extremely careful to not even bump any of the seals. Installation error is the most common thing ive seen as to why they leak other than natural failure of the seals. Causes the housing to fill with ATF, mix with the gear oil, and slowly seap out the halves.</TD></TR></TABLE><p>actually thats kind of impossilbe ... <p>considering if you had a atf leak from the tranny it would leak out the bottom between the tranny and angle gear. <p>Also the tranny is seal along with the angle gear so being able to wreck both of those seals and some how get the tranny fluid from one to the other with out falling between the two is ..... very slim
 

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Re: (Chilled Man)

No its not, the inner seals that the axle itself rotates on inside the housing leak when damaged allowing it to trace into the chain wheel housing. If you have ever pulled a right side axle it clearly states in VIDA that the trans fluid MUST be drained first as ATF will enter the chain housing. <p>I know it sounds crazy but as a Volvo technician ive seen this first hand countless times. Must have done at least 15 chain wheel housing reseals in the last year or so.
 

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And now we're back in the shop for a transmission oil leak.<p>Apparently, it's coming from the chain drive off the transmission after installing the new angle gear.<p>When I get it back, I plan on changing rotors and pads all around, plus bleeding the brake lines.
Hey i have an 06 xc90 and i just got my angle gear replaced and it was leaking i thought it was the tranny so i brought it to a friend whos a volvo tech. and he had told me it was the angle gear and it was leaking on both sides. I had my tranny flushed then went back to where i had my angle gear installed and he re did the seals and now its leaking red fluid on the left side of the angle gear where it meets the tranny. Was your leak any similar to this? im just looking around hoping maybe its a tranny seal. Any info you have would be a huge help, thank!
 

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If it helps others, the angle gear can easily be topped off when it is leaking. I do it every time I change the oil. Add a few table spoon fulls
to keep it full. Sure is a lot cheaper than having to replace it. Keeps the oil fresh too :)
 

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Leaking or not, the several points in the angle gear assembly can fail. The most important thing, is keep the fluid fresh and watch for leaks. Although, beyond 100k miles, I would venture to say its anyone's guess as to when it could fail. It is the designed weak point of the AWD system, too bad its a $1800 weak point.

Sent from my SCH-I535 using Tapatalk
 

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I am having the same problem with my xc90 after rebuilding the transmission. Everything was replaced in the transmission seal wise. I have a transmission leak where it looks to be where the angle gear / chain gear goes into the transmission. I am interested in finding out what it happened to be on your transmission please send me a pm once it is figured out it is driving me nuts and im not looking forward to pulling the chain / angle gear back out to replace the seal.
 
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