Discovery 2
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BigJohn
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PostPosted: Wed Nov 07, 2018 7:30 pm    Post subject: Discovery 2 Reply with quote
As I have now got one, I thought I would start a thread Very Happy

It drives well, but was standing for about 6 months before I bought it. I was most interested in the things which are difficult to fix - Self levelling suspension, Active Cornering Enhancement, general electronic systems etc. All of which work properly. The issue I have is a speed related whine, which although not loud, is more noticeable when the power comes off. I have checked the transfer box oil level which was low. Is it likely to be rear diff bearings? Or something else?
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Alan Drover
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PostPosted: Wed Nov 07, 2018 8:00 pm    Post subject: Reply with quote
It could be anything John, gearbox, transfer box or axles, not easy to isolate. Do what Land Rover drivers do. So long as it doesn't get any worse, ignore it.
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knappster
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PostPosted: Wed Nov 07, 2018 10:31 pm    Post subject: Reply with quote
Iíd just turn the stereo up! Smile

It might be worth getting a transmission expert to take a look. But if the gearbox oil was low, have you checked the axle oil levels too?
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Rich.

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BigJohn
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PostPosted: Thu Nov 08, 2018 5:31 pm    Post subject: Reply with quote
Checked the rear axle today. The oil didn't look too bad. Came out black to start with and then went green. Mind you, I seemed to put a lot more in than the volume that drained out. The drain plug had a little black sludge on it, but nothing metallic came out. When did Land Rover start fitting plastic filler plugs?
I will check the front axle and the wheel bearings when I get the chance. It is looking like it's just a worn transfer box. Good used ones are not a lot of money so I may go down that road eventually. Also, mine has no centre diff lock fitted, so I could win one with a box change (bird in a bush etc.) It's got to be worthwhile checking everything else though.
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TD5 Discovery.

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BigJohn
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PostPosted: Tue Nov 13, 2018 4:41 pm    Post subject: Reply with quote
I checked the front axle today. The oil looked O.K. I had to put about 1 litre in as it was low. I could see where it had been weeping out of the pinion seal. There is a small amount of play in the double cardon joint, but not enough to even cause a clunk. I will probably give it a greasable service kit at some stage.
Overall a small change to the transmission whine afterwards, but not enough to point directly to it. I am still veering towards worn transfer box bearings. Not obvious play in the output shaft bearings so it might be the layshaft bearings or a worn input gear. Either way, I think it will have to come out to find out for sure.
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BigJohn
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PostPosted: Tue Nov 20, 2018 12:04 am    Post subject: Reply with quote
Further checks have revealed that the Hooks joint on the front propshaft is rather lacking in the needle bearings department. Looking for a quick second hand fix - Late Disco 2 automatics use a different front prop (of course they do!). They seem to be as rare as hen's teeth second hand. I'm now looking to replace it with a heavy duty one with greasing points and then rebuild the old one as a future spare.
On the plus side I have got the transfer box to go into low range. It turns out that on the late automatics there is a safety interlock which prevents you from taking the transfer box out of drive unless the main box in is neutral. The transfer box has a locking solenoid in it. Everyday is a school day Smile
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websnail
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PostPosted: Tue Nov 20, 2018 4:22 pm    Post subject: Reply with quote
Sounds like Landrover.

What you will save on the transfer box, you will spend on the prop.

You've still got the 110, it's not too late Very Happy
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Geoff2
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PostPosted: Tue Nov 20, 2018 4:47 pm    Post subject: Reply with quote
Have you tried these people for a prop?:

http://baileymorris.co.uk/

(tho' I agree with websnail - it's not too late!)
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BigJohn
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PostPosted: Wed Nov 21, 2018 4:52 pm    Post subject: Reply with quote
Well that's the front prop changed. quick job really. Noticed an oil leak from the transfer box while I was under there. Methinks that might be the next job.
This thing is definitely a Land Rover!
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knappster
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PostPosted: Wed Nov 21, 2018 10:37 pm    Post subject: Reply with quote
Itís not an oil leak, itís sweating power! Wink Smile
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Rich.

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BigJohn
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PostPosted: Wed Nov 21, 2018 11:37 pm    Post subject: Reply with quote
I think it's just lifting a leg and marking it's territory Smile
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knappster
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PostPosted: Thu Nov 22, 2018 12:18 am    Post subject: Reply with quote
But when it stops leaking oil is when you have to worry... Wink
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Rich.

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Geoff2
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PostPosted: Thu Nov 22, 2018 4:06 am    Post subject: Reply with quote
Actually Rich, despite that old joke, you really do have to start worrying before that - like when your gearbox seizes up on a steep hill (been there ... )
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BigJohn
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PostPosted: Thu Nov 22, 2018 7:29 pm    Post subject: Reply with quote
In this case I thought that rather than change oil, I would just fill everything up and then see where it started to leak out again. So far this is working well and is pointing me towards the problem bits. The rear transfer box output shaft bearing is worn and that has distorted the shaft oil seal - leak. This is cheap to fix, if awkward to get at. The front diff pinion seal is leaking, again a cheap fix. Both to be expected with a high mileage vehicle.
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BigJohn
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PostPosted: Tue Nov 27, 2018 4:23 pm    Post subject: Reply with quote
O.K. I have now found the cause of the whining and the oil leak.
The transfer box input shaft front bearing has broken up. I found bits of it on the magnetic drain plug. I took off the bottom cover and the input shaft gear moves backwards and forwards on the shaft. Shaft now removed with new bearings ordered from Ashcroft. Also, the rear output shaft is floating in it's oil seal and the output shaft bearing is slack. There is lateral movement on the rear of the output cage. This and the seal will also be changed. It took me over an hour to get all the little bits of the bearing cage out from behind the intermediate gears, which was a pain. All the gears look and feel fine though, which is a bonus. The main box output shaft splines are perfect as they are on the transfer box input shaft which is also good news. The leakage was from the bottom cover seal which will be replaced on the rebuild in any case. All this can be done without taking the transfer case out. It should be a fairly cheap repair.

I'm happier now that I know what the problem is as I can just go ahead and fix it.
Looks like I am driving the 110 for a few days Very Happy
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