| Author | Message | ||
     carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 105 Registered: 02-2003 |
I have a Disco 2 (2001) with 92,000 miles on it. Yesterday I noticed that I had a slight leak to my rear differential. (I have not been off-roading in about 6 months so I don't think that was the main cause. It appears to me that my seal is going bad. Is this common for a Disco 2 and is it expensive or difficult to repair the seal to the rear differential. | ||
| marc olivares (Pugs) Senior Member Username: Pugs Post Number: 377 Registered: 12-2002 |
carl, 9 times out of 10 it's your vent tube that is plugged and the excessive pressure is pushed out of the seal. start, by pulling of the vent line and check if it's clear. if the vent is clear, then the seal is most likely shot. this is an easy DIY project requiring nothing more than a basic tool set and a torque wrench. although, some have issues getting the pinion flange off, they typically just slip of the splines. marc | ||
| Nadim Samara (Discodino) Senior Member Username: Discodino Post Number: 297 Registered: 02-2003 |
At least you know there is oil in there... | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 106 Registered: 02-2003 |
Marc, I was checking out the tech Manual and I found a tube in the area of the rear Diff. In the manual the tube was called the Breather tube. Is that the same as the vent line? Thank you for your time. Carl | ||
| Shane Lesteberg (Snwbord24) Member Username: Snwbord24 Post Number: 68 Registered: 01-2004 |
Same thing Carl. Shane | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 107 Registered: 02-2003 |
Thank you very much. Carl | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 108 Registered: 02-2003 |
Is is difficult to remove the breather from the diff? Is it hard to clean out? Is it hard to put back on? I just want to check before I try to work on it. | ||
| marc olivares (Pugs) Senior Member Username: Pugs Post Number: 381 Registered: 12-2002 |
no, no and ummm no. just make sure you can blow air through the hose and you're good. m | ||
| Shane Lesteberg (Snwbord24) Member Username: Snwbord24 Post Number: 69 Registered: 01-2004 |
As long as your removing it you might want to think about extending it if you do or plan be in water very much. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 109 Registered: 02-2003 |
How does it come off. Do I just pull and wiggle it until it comes off. I don't want to man handle this tube. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 110 Registered: 02-2003 |
How do I take the breather tube off. Do I just pull it off or is there a special procedure to remove the tube. I know this is a very dumb question but I don't feel like doing something stupid to my Rover right after work. When I get home there is vert little sunlight so I want to do it right the first time. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1536 Registered: 02-2002 |
Carl - don't undo it there to test it. Take off the diff filler cap, and blow through the top end of the breather. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 111 Registered: 02-2003 |
I have never work on a diff and this is the first time I have never really worked on it. I really don't know much on working on the differental. Is the Oil level plug is the same as the diff filler cap? Is there some special procedure to take this filler cap off. (Nothing is going to come pouring out no special procedure to take the cap off.) | ||
| Ron Brown (Ron) Senior Member Username: Ron Post Number: 798 Registered: 04-2001 |
yes, same. no, something might come pouring out if it was slightly overfilled but unlikely due to a leak. Top up with 75w 90 synthetic. Better yet change it because if oil can get out water can get in. Ron | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 112 Registered: 02-2003 |
Should I replace the O-Ring to the oil level plug when I take it off the clear out the breather tube. (I am not going to change the diff oil today) Where can I get an O-Ring for oil level plug? When I change the diff oil how tight should I put the oil drain plug be put on. I see that the oil drain plug has to be tightened 47 Lbf.ft. I just know that is tight. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1537 Registered: 02-2002 |
Carl - the filler cap is half way up the diff. Its plastic on the D2. Undo it with a socket, you can reuse the o-ring don't worry about that. Pull the breather tube down and blow through it. If you can blow through and it does't pressurize and simply blow back in your face, then you're ok. And at 90K miles you should change the oil, its very simple. If it looks milky then there is water in it. If its got powdered filings in it, change it soon. Dean | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 113 Registered: 02-2003 |
Does to matter when I take the filler cap off, meaning will the oil in the diff expand after driving. (Basicly, If I took the filler cap off after driving will it over flow?) Does the diff oil get hot? Should I let the car set for a couple of hours before I take the filler cap off to clear the breather tube? Thank You very much. Carl | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1538 Registered: 02-2002 |
Its not crucial. I check when its hot or cold. A little might slip out, no big deal. Can I recommend you relax a little  You're gonna laugh at your own worry once you've done this job. If the breather is blocked, then ask here again how to take it off. You may be able to clear it by using compressed air (like on a compressor or a football pump) blowing down the top end of the breather. Be careful not to over-tighten the plastic fill plug. It doesn't have to be very tight, it won't fall out. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 114 Registered: 02-2003 |
It was an easy job. The breather tube was not blocked. I am guessing the gasket or something else is causing the diff to leak. How much oil does the diff take? How much oil can the diff run on? What is the best way to check oil level? I stuck my finger in the Diff to see if I could feel oil. The diff oil appeared to be low so I added a quart. Looks like I will checking diff oil more until I have to replace the gasket. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1549 Registered: 02-2002 |
I think its just over 2 quarts. If its not leaking too fast you're ok for a while I guess. You clearly are in need of a shop manual, especially as time goes on, you seem to want to do things yourself. Email me offline if you want one. Where is it leaking from? You can check its not milky by sucking some out in a clear plastic tube (home depot sells this cheap), and you can tell if there is any crap in it. If it hasn't had a change since the 60K service (or worse, ever), then it will get a change when you replace the seal anyway. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 115 Registered: 02-2003 |
I had the 60 K service done it so the oil was changed in the diff. It appears to be leaking from the bottom of the diff but I am not sure. I am going to clean the outside of the diff and put a plastic dish under the diff tonight. (I am going to try to determine how much oil and where the leak was.) | ||
| Sergei Rodionov (Uzbad) Senior Member Username: Uzbad Post Number: 346 Registered: 08-2003 |
Carl, oil level should be up to the filler hole. If its lower - top it. If you sure its not breather - there is easy way to find were its going off - just clean housing throughly, and sprinkle it with talk or something similar. Thus you can find if its - gasket - hole in housing that you managed to produce somehow - filler/drain plug is a bit runny | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 116 Registered: 02-2003 |
Thw talc powder idea worked very well. I will have to redo the test again because I was running late to work and did not craw under car this morning. I will redo it again this afternoon. All that I do know is that the leak is in the front part of the diff. (It also looks like I loose about a teaspoon of diff oil a day.) | ||
| Joe B (Denverrover) Member Username: Denverrover Post Number: 188 Registered: 02-2003 |
Lucas oil stab may help the leak a little. You can buy rear pinion seal for about 8 bucks on AB & have it installed pretty cheaply. | ||
| Paul Clawson (Pnut) Member Username: Pnut Post Number: 94 Registered: 02-2003 |
I had quite a lot of problems with mine after the 60,000 mile service. I think the synthetic lube that dealer begin using at this interval leaks easier in rear diffs. I starting using a heavier weight oil(no synthetic) and have had no problems. I hope this helps. | ||
| Sergei Rodionov (Uzbad) Senior Member Username: Uzbad Post Number: 355 Registered: 08-2003 |
Carl, if its in front then its most likely oil seal, as Joe said. Replacing is pretty cheap, all you need is small crowbar (or something like that to pull old one out) and rubber mallet or some press to get new one in. But getting to it is pain if you never done any work with rear flange before - you need to ubolt flange and pull it out. Before unbolting - try to shake it sideways/updown. If there is any play - pinion bearings are shot and you need to get whole diff out, and replace them. Unlikely, seein your rig is new, but who knows Better be safe than sorry later. | ||
| carl J. Drumgoole (Carl_kps) Member Username: Carl_kps Post Number: 117 Registered: 02-2003 |
I think I was able to fix the leak. I was able to jack the car up and really look at the diff. When I was about to take the bolts out of the diff I realized they were very loose, not even hand tight. It appears the bottom bolts of the diff just came loose. All I did was tighten the bolts as tight (with just socket set). I then sprayed the diff down with wd 40 and wiped it down with paper towels. 12 hours later I check the diff and it is still dry and clean. I don't know how the bolts would come loose but they did. Thanks alot for all of the help. Carl |
