| Author | Message | ||
     Frank Battersby (Frank84) New Member Username: Frank84 Post Number: 8 Registered: 10-2003 |
HELP - '99 DII w/ 116k miles - the clunk occurs especially bad when i let off the gas going down a hill and resume at the bottom - sounds like its from the t-case area. if its the transfer case, do i have to replace the entire thing? any ideas? the clunk has gotten progressively worse recently to the point that now i'm afraid something is going to break off | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 100 Registered: 04-2003 |
My experience has been that most of the clunk in a LR drivetrain originates in the transfer case. But that is the clunk you get when you shift into D or R. Try to see if there is any losseness in the outputs of the transfer case. Try to examine the two transfer case mounting rubbers. Usually a clunk like you have described is caused by a radius arm being loose in it's mount. Have you tried retorquing all the suspension mounting bolts?? Examined the bushings?? Randall | ||
| Rick Neff (Lostinboston) Member Username: Lostinboston Post Number: 104 Registered: 06-2003 |
Its probably the transmission or T-case. A few were replaced because of this. I dont remember which one it was. I had a few clunks, but when i took it to the dealers to check it out, it didnt happen, figures. It doesnt happen anymore though. Try changeing the fluids and tightening everything. | ||
| Trevor (Daredvl) Member Username: Daredvl Post Number: 90 Registered: 03-2003 |
I find on my Disco 1 clunks if it has been parked on a steep hill, then put in to Drive and driven slowly it will clunk and lurch a bit. | ||
| Edward Bibb (Heirless) Member Username: Heirless Post Number: 46 Registered: 04-2003 |
this problem exists in both manual and automatic transmissions as the bulletin lists replacment part numbers for both. Here are the salient parts: Bulletin No: 37/20/96 Subject: Gearbox Mainshaft Spline Wear Affected Vehicles: Discovery LJ 178205 onwards Discovery LJ 506525 onwards Defender LD 976480 onwards Detail: Some customers may complain of clonks and backlash in the transmission system. This may be due to gearbox/mainshaft spline wear. The clonk/backlash will be most apparent in stop/go traffic under overrun conditions or when manuvering the vehicle during parking, etc. From transfer box number 28D 460996 F (Discovery) and 22D 461124 F (Defender) all factory built LT230 transfer boxes have a revised design of input gear, featuring lengthened splines and cross drilled oil feed holes. This modification eliminates the requirement for an oil feed disk (bulletin H415) and eliminates input gear/mainshaft spline fretting/wear. Coincident with this change, the transfer box identification number has been raised to Suffix "F". | ||
| Frank Battersby (Frank84) New Member Username: Frank84 Post Number: 9 Registered: 10-2003 |
Thanks Edward! That sounds like my problem. Doesn the whole transfer case have to be replaced or just the main shaft? Thanks! | ||
| Shaun Power (Shaunp) Member Username: Shaunp Post Number: 197 Registered: 05-2003 |
Frank this is not your problem. This only effects D1 cars up to around late 96 |
