Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 09-07-2015, 10:53 AM
Registered User
Join Date: Nov 2014
Location: Slovakia
Posts: 20
722.3 front pump leak?

is it possible for my front pump to leak after its been overhauled maybe 5000 km before to do B3 reverse job done? Recently I just changed valvebody and then this somehow happened didnt even get to drive it much, as I had problem with leaking fluid from trans cooling line cut and warped oil pan leak(now fixed).

What could cause this MASSIVE (like almost splashing out of TC area)leak? And also it refuses to engage reverse, could be due to lost fluid though,(drive is OK) and when i try to put some gas in R it wont do more then 2k RPM asi if it was blocked by something. Also it has noise in N and P (more then usually had) just recently before or with the front leak incident.

thanks for any help
Reply With Quote
Old 09-07-2015, 11:10 AM
Registered User
Join Date: Nov 2010
Location: TX
Posts: 3,442
believing that you checked the obvious - which is torque converter drain plug not loosened out.

The noise you hear is the system running low on oil - specially if you have a splashing leak.
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
Reply With Quote
Old 09-07-2015, 11:16 AM
Registered User
Join Date: Nov 2014
Location: Slovakia
Posts: 20
Well, noone touched the TC drain plug recently, could it be it somehow leaks on its own?
Reply With Quote
Old 09-10-2015, 08:34 AM
Registered User
Join Date: Nov 2014
Location: Slovakia
Posts: 20
Hello I have another update, (i didnt get to lift the car yet so no pan inspection yet, but I bet there wont be anything):
- took a ride in the car just to fill some fuel and first start it was leaking almost as fast as the cooler tube (half a liter in about couple of seconds) would if it was disconnected in P and in N also, I gues in gear it stopped totally even when cold as ice
-reverse is definatelly blocked by the one way clutch - it doesnt go forward on an incline, and if I want to move the car in the way reverse shoud go it is blocked!!!, when my B3 clutches were gone it was like neutral so this IS NOT a tiny bit similar, is feels like it leaves the freaking parking pin stuck in.
-Forward gears ALL AS NICE AS CAN BE, even 2nd gear IS BACK!, all smooth all fast all without flaring all not even noticable RPM are exactly as they should be absoultely no slipping
- Kickdown somehow doesnt work and even if I want to force 1st gear with B selector it wont downshift

Now tell me what in the world would lock my reverse and force the transmission to bleed itself from the front?

I guess this is another 1/5000 scenario which I dont really have patience for...

I wonder why the car thinks I am happy when it challeges me with the hardest and toughest challenges it can throw at me. I am no mercedes GURU trained specialist.

So now what do you think guys?
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 09:23 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page