5HP30 Valve body rebuild

[jofusfarr]

I definitely want to replace the check balls in my valve body, though I'm hesitant to spend so much on a kit if it's solely to replace 2 check balls - you can purchase suitable .25" balls from McMaster.

Has anyone done the kit rebuild and found the various gaskets, o-rings, and springs to be worn or was it simply these check balls that required attention?

[BMW4LIFE]

I definitely want to replace the check balls in my valve body, though I'm hesitant to spend so much on a kit if it's solely to replace 2 check balls - you can purchase suitable .25" balls from McMaster.

Has anyone done the kit rebuild and found the various gaskets, o-rings, and springs to be worn or was it simply these check balls that required attention?

do a search for some of shogun's write ups...

here is a link to a general tranny rebuild

http://video.boxwrench.net/transmission/index.htm

hope that helps

[shogun]

Is a valve body rebuild kit for the 5HP30 with 160 $ too expensive?
Definitely not.
When you ever have replaced a valve body kit, you will never again think about saving $ by replacing just 2 balls.
To get to the balls, you have to disassemble the valve body!
Do you think yoy can re-use baked on gaskets?
http://www.bimmerboard.com/members/WTH/5HP30VBK%20Instructions.pdf
http://www.zf.com/na/content/media/import/zf_na/startseite/sso/passenger_car___light_truck/car_driveline/product_catalog/5HP30.pdf

Look how ZF in Germany makes a valve body service with trans fluid change, LOTS of pics
http://www.bimmerboard.com/forums/posts/527361

VB replacement
http://www.bimmerboard.com/forums/posts/673185

[shogun]

and more to download here from Russia
http://forum.b-m-w.ru/index.php?action=downloads;sa=downfile;id=99

[Mr._Graybeard]

At 150K it's a good time to overhaul the entire valve body, IMO. The various valves and springs do develop wear and can produce erratic shifts, which (again IMO) subjects the powertrain to unnecessary stress. As Shogun said, the major gaskets also get brittle from heat and will need to be replaced.

With all the great step-by-step writeups available , it's not that tough a job, just tedious and kind of messy. And yes, the check balls are buried deep in the valve body. Once you set out to do the job, there's no point in doing it halfway.

[jofusfarr]

Noted, gents.

Thanks for your inputs, I'll be getting the whole kit.

[BigKriss]

wow, thats an official zf repair manual. is there one for zf 4hp22 gearboxes?


and more to download here from Russia
http://forum.b-m-w.ru/index.php?action=downloads;sa=downfile;id=99

[shogun]

some additional info: 5HP30 problems after valve body rebuild - solved - with rebuilded vb, my car has problem with forward , with pics
https://www.bimmerforums.com/forum/showthread.php?2399101-5HP30-problems-after-valve-body-rebuild-solved

5HP30 Valve Body Rebuild Kit detailed list https://www.bimmerforums.com/forum/showthread.php?2059448-5HP30-Valve-Body-Rebuild-Kit

instructions http://www.bimmerboard.com/forums/posts/763091/
5HP30 parts lists and diagrams http://www.e38.org/5HP30%20spare%20parts%20catalog.pdf

22MB http://www.vasimr.com/bmw/5hp30_repair_manual.pdf
http://www.bmwe34.net/E34main/Trouble/Data/ZF%20Tech%20Guide.pdf

http://www.bimmerboard.com/forums/posts/825438
http://www.bavarian-board.co.uk/forum_posts.asp?TID=37207

[Frank87]

I have done a valve body rebuild with alot of parts. I have to say honestly, if you have no shift issues, don't do it, the difference is negliable. If you have a transmission with some miles on it, go for a full rebuild.

The best way to go is let a shop rebuild your VB. The only way to know if something is bad, is a proper pressure test bench which we as hobbyists don't have. Trust me, I can do this myself no prob but if I look at the hours I spent, part costs etc., next time, I will drop my VB at a specialist or just buy a BRAND NEW ONE from ZF.

Only exception is the 5HP30 check ball fix since this is a known issue.

[shogun]

more parts lists for download https://zf-parts.ru/zf/cats/5HP18_19_24_30_S531_S640.pdf
including detailed parts catalogs for 5HP24, 5HP24A, 5HP30, S-531 manual trans, S640 6-speed trans, 5HP18, 5HP19, 5HP19FL, 5HP19FLA