[xluke]

Hello,
I have a '99 v70xc that I am replacing the engine in and while it is out am replacing seals and making improvements on the weak spots. I know that the angle gear is prone to failure and have read that it is often due to seals failing due to clogged vent -> leaks -> running dry.

I have read tech bulletin 46-08 (attached at http://www.v70xc.com/forums/sh...13573) which details adding a new larger brass tube w/ a filter to prevent the vent from becoming clogged. The bulletin applies to my year, but my angle gear has only a very small vent at the space indicated on the pictures, and is not large enough to install the brass tube (which I have purchased, along w/ the filter). Should I, or can I, just drill this out to install the larger tube? Any tips on preventing metal filings from contaminating the angle gear?

Also, can the angle gear be flushed? Gear oil is pretty thick stuff as I understand it, is there a reliable way to clean it out? I noticed there is some dirt in mine already.

Thanks!

 

[jrodT5]

I have serviced 100's of angle gears and never once installed the new brass tube and filter. I always just took the bottom bolt out, drilled it out which drains the fluid, then lock tight the bolt, put it back in and pump new Volvo fluid back in.

 

[Big Will]

I too have the drilled stud on my angle gear which makes changing the gear oil yearly.

I don't see any harm in installing the updated vent though. I believe there's a decent write-up over on VS or V70r