Need some help on a real axle leak. Have a friend with a 1999 fixed roof that he has to replace the left side seal for the fourth time. Have you any idea for a fix. He seems to think the seal cover might be warped but don't sound logical. Any ideas for a fix because at $250. a try is getting expensive.

 

Ensure the casing vent is clear and working.

 

Drive the car until the drive train is up to FULL temp then let the deive train cool. Jack the rear of the car and open the differential fill plug. You should hear a VACUUM release. The case operate under a slight vacuum. The vent allows gasses OUT but NOT back in. If theres no vacuum, thats part of the issue.

If you have to pull the rear,,,heres a couple of post to make things more bullet proof.

- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html

- C5, Its Go Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966

If you remove the CV shaft from the rear, make sure theres NOT excessive play in the differential output shaft. If there is, th clutches are shot and or theres too much end play in the differential. That can lead to premature seal wear.

BC

 

So if you don't hear the vacuum release the seals are bad?? or air is trapped in the rearend?? Sorry for not understanding...

 

This word doc helps:

Heres ALL the post that I consider GOLD KNOWLEDGE!

- C5 ignition Switch repair - http://forums.corvetteforum.com/c5-t...ch-repair.html

- C5 Multifunction Switch repair - http://forums.corvetteforum.com/c5-t...f-replace.html

- C5 Pewter 99, The Ultimate DIY Thread .... with PICS - http://forums.corvetteforum.com/c5-t...post1571737259

- Tire pressure sensor rebuild - http://forums.corvetteforum.com/c5-t...post1570376652

- C5 Gage Cluster disassembly - http://forums.corvetteforum.com/c5-t...post1570380674

- C5 Gage Cluster Post - http://forums.corvetteforum.com/c5-t...post1570380878

- C5 Tire Pressure Monitor Sys Up-Grade 97-2000 to 2001 RFA System: http://forums.corvetteforum.com/c5-t...e-sensors.html , http://forums.corvetteforum.com/c5-t...aded-tpms.html

- C5 AC System Service and Repairs: http://forums.corvetteforum.com/c5-g...post1570703001 ,, Rocco’s post http://forums.corvetteforum.com/c5-t...post1571637102 , http://forums.corvetteforum.com/c5-t...-write-up.html

-

- C5 Key FOB Repair Post: http://forums.corvetteforum.com/c5-t...post1570747451

The Ultimate DIY Thread .... with PICS http://forums.corvetteforum.com/c5-t...with-pics.html

- C5 No Start Thread: http://forums.corvetteforum.com/c5-t...post1571099773

- Everything I Know About a C5: http://forums.corvetteforum.com/c5-g...ngths-etc.html

- C5 Horn Membrane Fix: http://forums.corvetteforum.com/c5-t...brane-fix.html

- C5/C6 Shifter Install Thread: http://forums.corvetteforum.com/c5-g...tallation.html , http://temp.corvetteforum.net/c5/pat...rInstall.shtml

- C5 Alternator Disassembly Thread: http://forums.corvetteforum.com/c5-t...cs-inside.html

- Targa Top Refinish: http://forums.corvetteforum.com/c5-t...sh-how-to.html

- TSTAR Interior Led Light Up-Grade http://forums.corvetteforum.com/c5-g...od-thread.html

- C5, EBTCM troubleshooting http://forums.corvetteforum.com/c5-t...c-c1243-h.html

- C5, NUMB Transmission repair: http://forums.corvetteforum.com/c5-t...uild-saga.html

- C5, MIKER Fuel Sender Repair: http://forums.corvetteforum.com/c5-t...post1571514483

- C5, TRUSSME EBTCM DTC 1214 Diagnosis: http://forums.corvetteforum.com/c5-t...post1571568455

- C5 TICK Master Cylinder FACTS: http://forums.corvetteforum.com/c5-t...inder-kit.html

- C5, JBAUCH357, CV Shaft POP Repair: http://forums.corvetteforum.com/c5-t...-bearings.html

- C5, FL Dave, How to fix your hazard flasher/turn signal problem: http://forums.corvetteforum.com/c5-t...post1571702905

- C5, DPG, BIG 3 Wiring Improvement: http://forums.corvetteforum.com/audi...ig-3-pics.html

- C5, KC JEFF, HUD FIX: http://forums.corvetteforum.com/c5-t...post1571913016

- GM Service Manuals on CD: http://forums.corvetteforum.com/c5-t...al-on-dvd.html

- C5 SJBROTHERS, EBTCM DTC 1243 DC Current: http://forums.corvetteforum.com/c5-t...post1572045355

- C5 A.I.R. Check Valve post DTC P1416: http://forums.corvetteforum.com/c5-t...post1572083373 http://forums.corvetteforum.com/newr...1&p=1573420204

- OBDII Driving Cycle: http://www.obdii.com/drivecycle.html


- C5 WKMCD Torque Tube Bushing Replacement: http://forums.corvetteforum.com/c5-t...oday-pics.html

- C5, Bville Bud, Wiper Motor Repair: http://forums.corvetteforum.com/c5-t...post1572156474

- C5, dquagliaroli , Deprogramming F-55: http://forums.corvetteforum.com/c5-t...uspension.html

- C5 Intake Manifold Comparisons: http://www.tpis.com/index.php?module=2_17_06

- C5 Corvette Action Center C5 Owner Manuals: http://www.corvetteactioncenter.com/...ual-links.html

- C5 Bakersfield, How to fix a door lock or window problem : http://forums.corvetteforum.com/c5-g...w-problem.html

- C5 Toque Tire size calculator : http://forums.corvetteforum.com/c5-g...ah-issues.html

- C5 CHEVY 406, IPC Gage cluster exploration: http://forums.corvetteforum.com/c5-t...enter-dic.html

- C5 Rocking Seat Fix: http://www.lieblweb.com/c5seatfix.html

- Car Battery Knowledge Link: http://www.batteryfaq.org/

- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html

- C5, Its Go Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966

- C5 Differential Repair, SPINTER: http://forums.corvetteforum.com/c5-t...procedure.html

- C5 Intake Manifold Removal Oil Pressure service: http://forums.corvetteforum.com/c5-t...y-vectorz.html

- C5 Torque Specs: http://www.eliteengineeringusa.com/C5_Torque_Values.pdf , http://www.davidfarmerstuff.com/C5torque.pdf

- C5, Voda1, DELETE that F-45 Selective Ride Crap: http://forums.corvetteforum.com/1571890692-post6.html , http://forums.corvetteforum.com/c5-t...post1573583835

- C5, euro@EFIAlchemy.com , HOW TO 99-02 PCM into 97-98 Corvette WITH PICS! , http://forums.corvetteforum.com/c5-t...-corvette.html

-
When I find a new GOLD post, it gets added to the list. Theres a post out there some where that I up-date with the latest info.

BC

 

Thanks Bill!

 

Yes. The heating cooling cycle SHOULD cause a slight VACUUM to occur in the rear-end. If you let the car sit for MONTHS,,,,there would be less than if it were checked with in days of cooling down. You get the hint.

Yep, you should see a vacuum. If it isn't there, the seals could be bad (if you see oil dripping or oil residue.) The vent could also be dirty or defective.

BC