Hi Folks,
Name's Nick, just bought my first 90 defender, 26 years old and in pretty good shape. She's had the original engine replaced with a 300Tdi unit from a Disco, everything was good when picked up but during the 160 mile return journey a whining noise started to grow and is now very loud. 45mph seems to peak with a clear feeling through the seat. I'm reluctant to drive her much in this condition. There's no clunking or clicking just whine under power and associated with speed. I think it's related to prop shaft speed.. Anyway, this is what I've done so far. Spun up the TB input shaft in 5th with the TB in Neutral, no real noise, just lots of whirring noises. Put rear axle on stands and did the same, yeah, lots of whirring noise, more so than former test but not massively worrying. I've checked all the levels, front diff was slightly low and TB's oil was brown and there was some metal splinters on drain plug magnet. Changed oil regardless and topped up the front diff. The noise under power is just as loud. I've heard about removing either front/rear prop shaft and taking it for a spin locked to test either front or rear diff, that a good idea? I'm not talking about thrashing it, it's just a gentle test at 40mph...
I've also got an issue with the drum hand brake, no hold whatsoever except if I adjust the drum using a 11mm spanner. It'll hold then!. It's like the cable has stretched. I thought I'd found the issue when I found the rear bracket of the hand brake was bent effectively shortening the cable. The adjust on the other end is on it's limit. Cable looks newish and as yet I've not taken a look inside the drum's mechanics..
Any suggestions to narrow down the transmission noise most appreciated, I have other issues but the missus can't go for a ride just yet until the transmission is quiet!!
Name's Nick, just bought my first 90 defender, 26 years old and in pretty good shape. She's had the original engine replaced with a 300Tdi unit from a Disco, everything was good when picked up but during the 160 mile return journey a whining noise started to grow and is now very loud. 45mph seems to peak with a clear feeling through the seat. I'm reluctant to drive her much in this condition. There's no clunking or clicking just whine under power and associated with speed. I think it's related to prop shaft speed.. Anyway, this is what I've done so far. Spun up the TB input shaft in 5th with the TB in Neutral, no real noise, just lots of whirring noises. Put rear axle on stands and did the same, yeah, lots of whirring noise, more so than former test but not massively worrying. I've checked all the levels, front diff was slightly low and TB's oil was brown and there was some metal splinters on drain plug magnet. Changed oil regardless and topped up the front diff. The noise under power is just as loud. I've heard about removing either front/rear prop shaft and taking it for a spin locked to test either front or rear diff, that a good idea? I'm not talking about thrashing it, it's just a gentle test at 40mph...
I've also got an issue with the drum hand brake, no hold whatsoever except if I adjust the drum using a 11mm spanner. It'll hold then!. It's like the cable has stretched. I thought I'd found the issue when I found the rear bracket of the hand brake was bent effectively shortening the cable. The adjust on the other end is on it's limit. Cable looks newish and as yet I've not taken a look inside the drum's mechanics..
Any suggestions to narrow down the transmission noise most appreciated, I have other issues but the missus can't go for a ride just yet until the transmission is quiet!!
