| Author | Message | ||
     Jason McCombs (Jasonmc) Member Username: Jasonmc Post Number: 126 Registered: 06-2003 |
i got a bit of a gremlin going on. And the end result is a clunking sound. If i am driving and i accelerate hard enough so that the trans downsifts i accelerate normally but if i lift my foot off the peddle suddenly then i get this clunking noise. Its actually kind of a double clunk sound. any one got any ideas on what this is? one other thing is that it only seems to happen once the truck is warmed up. I am used to the "normal" clunk sound that i, and it would seem, a lot of others have when shifting into reverse. This clunk is a bit more pronounced i would say. Now it could very well be that this is just an expected sound for a 96 D1 driveline with some play in it, and i may well have an overly heightened aural attentiveness for creeks, rattles and clunks. But i would like to appeal to you all for your opinions. What should i look for? | ||
| Matthew (Lzxray3) New Member Username: Lzxray3 Post Number: 17 Registered: 11-2003 |
I have the same problem in my 98 D1 and i was told that it was my t-case. Matthew | ||
| Gerard Brooks (Wizard) New Member Username: Wizard Post Number: 37 Registered: 11-2003 |
Normally its an indication that the A frame ball joint is worn. Look just above the rear diff for a ball joint bolted to the chassis, pry it about with a large bar if you get any movement out of it then replace it. They cost £25 here in the UK and are fairly easy to replace. Cheers wizard | ||
| Gerard Brooks (Wizard) New Member Username: Wizard Post Number: 38 Registered: 11-2003 |
Another thing you could check is the main shaft in the transfer box. On earlier Disco's the main shaft was prone to wear because it wasn't cross drilled and this prevented it from being lubricated. LR started to introduce cross drilled gears way before 96 but it might be something you could check. If you lay under your Disco have a look at the back of the transfer box, you will see a round cover plate with 7 or 8 bolts securing it. Take the plate off and pull the gear out. It should just slide off, what you will be left with is the bare main shaft. The splines on the shaft should be flat with no sharp edges if its not this is where the clonking starts. I would be very supprised if your main shaft is worn but it will only take you 1/2 an hour to check. Cheers wizard | ||
| Jason McCombs (Jasonmc) Member Username: Jasonmc Post Number: 127 Registered: 06-2003 |
Gerard, if i pull the main shaft out do i need to train the transfer case oil? also do i need to have the the gear box or cdl in any specific position? | ||
| Darryll Mills (Emnat) Member Username: Emnat Post Number: 61 Registered: 11-2003 |
I have the same problem on my 97D1. I have done 30,000 miles with it doing it, 110,000 on truck. I asked the dealer way back about it and they said it was nothing to worry about. I don't trust them but thats another story. When I am in town I drive in 3rd otherwise I get the clunking a lot when I take my foot of the gas. | ||
| Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 553 Registered: 02-2003 |
First place I'd look to declunk a d1 is the rotoflex coupling, cheap, DIY, and they wear out with alarming frequency | ||
| Jason McCombs (Jasonmc) Member Username: Jasonmc Post Number: 128 Registered: 06-2003 |
maybe a dumb question.. but do the 96's have the rotoflex? | ||
| Darryll Mills (Emnat) Member Username: Emnat Post Number: 63 Registered: 11-2003 |
Where is the rotoflex coupling? | ||
| Will Tillery (Will) Senior Member Username: Will Post Number: 277 Registered: 11-2002 |
On the rear driveshaft where it connects to the third member "differential".. The problem with this area is the rubber will fail over time and use and begin causing issues such as vibration etc. 1994-96 and maybe some 97 models had rotoflex. | ||
| Gerard Brooks (Wizard) New Member Username: Wizard Post Number: 40 Registered: 11-2003 |
You dont need to drain any oil or anything else,you dont even have to jack the Disco up. You will need to either replace the covers gasket or stick some gasket sealer on when you put it back. Good luck wizard | ||
| Samuel Liles (Selil) New Member Username: Selil Post Number: 3 Registered: 11-2003 |
My 97 makes a noise when stopping too. But, only when it is raining or wet out. The "Clunk" comes from under the left foot of the driver (US) truck. Starting or stopping it feels like the only time it does it. Dealer in Colorado shrugged his shoulders, here in Indiana I don't hav a dealer anywhere near by. sam | ||
| Jason McCombs (Jasonmc) Member Username: Jasonmc Post Number: 130 Registered: 06-2003 |
i have a bit of an update.. that updates my question. i got under the landy and started checking around, looking for a crapped out rotoflex. but alas there is no rotoflex. the disco is a 96 so i thought it should be there. so either it never had one or a PO changed it. also i grabbed hold of the rear drive shaft and there was no play at all i couldnt budge it or twist it. then when i got to the front shaft it was a bit of a different story. There was a lot of play in it. i could twist it a fair amount. i got in close and looked at the connections at the transfer case and the front dif. and there seems to be something wrong. the collar seal if thats what its called seems to be pulled away on both ends of the drive shaft. since i dont know how to explain it better i have taken pictures and uploaded them at this link: http://www.mindspring.com/~capsule/driveshafts.html please take a look at them and tell me whats up. thanks in advance for all your time. | ||
| Dave Thomas (Dthomas) New Member Username: Dthomas Post Number: 29 Registered: 11-2003 |
If memory serves....that space is normal. Why dont you pull the front shaft and see if it solves your clunk? | ||
| Jason McCombs (Jasonmc) Member Username: Jasonmc Post Number: 131 Registered: 06-2003 |
so lets say the space between the collars is normal. why does my front drive shaft have so much play and the back has none? also how bout this non existant rotoflex? anyone care to chime in? | ||
| Gerard Brooks (Wizard) Member Username: Wizard Post Number: 41 Registered: 11-2003 |
I think a quarter of a turn on the front shaft is normal. wizard | ||
| Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 556 Registered: 02-2003 |
Sam, souns like your panhard rod needs a little tightening....these can oval out the attachment to the chassis and that little extra effort from time to time is needed......Mine is oval FWIW |
