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Post by ronnie on Sept 10, 2011 18:31:11 GMT 2
Hi Marius
A centering tool makes the job easy but you don`t get the plastic ones in the kits now. Either do it by eye or use a suitable socket, extension and tape to make the extension the correct size. Just watch the socket does not stick in the bearing or bush in the flywheel. You can do it easy by eye.
Ronnie
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spikes
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Post by spikes on Sept 10, 2011 19:08:32 GMT 2
Use a piece of broom stick and wrap insulation tape around it. As Ronnie said, the insert makes it just sooo much easier especially if you are on your own. I have an insert and will mic it tomorrow and post dimensions Spikes
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Post by marius on Sept 10, 2011 20:00:42 GMT 2
Well I do have one - crafted for me by a friendly neighbour some years ago so I guess I'll use it anyway. Marius Attachments:
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Post by Charles on Sept 10, 2011 20:58:44 GMT 2
When the new clutch is still on the table put two small drops of superglue on the pressureplate and put the clutch plate in the cebter and press it down for a couple of seconds.
Works a charm.
Charles
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Post by Charles on Sept 10, 2011 21:48:27 GMT 2
Took my Niva for a nice spin tonight. Tc levers are still the whole time. Jusy have a funny whisling noise at low speed.
Looking to get her legal within the next couple of weeks.
Charles
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ladanivabelgium
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Post by ladanivabelgium on Sept 11, 2011 5:06:59 GMT 2
Ronnie, the most likely causes for vibrations with a steady movement at +- 80-90 km/h (most typical speed) - propeller shafts out of balance remove rear shaft. Put TC in lock and see if vibrations are gone. If not, place it back and remve fro,nt shaft. Try again. If vibrations are gone with one of the shafts removed: check U-joints
- jammed layshaft U-joint : remove and check
- Bended bolts and layshaft flexible coupling flange : remove and check very thoroughly. Be very carefully that you don't switch the washers of the bolts of the flexible coupling (!!) as they balance the coupling
- Check engine and gearbox mounts for wear.
- check bearings of TC for any play
diagnoses: copy from factory manual: First of all note, at what speed does the transfer box vibration occur, then start with the diagnosis. Test 1. Place the transfer- and gearbox levers in neutral position and start the engine. Set engine speed equal to vehicle speed at which vibration occurs. If vibration still exists on a parked vehicle, it is necessary to check engine mounting and supports, as they are the reason of vibration. Test 2. If during test 1 vibration was not diagnosed, place the transfer levers in neutral position, start the engine, engage direct gear and set engine speed equal to vehicle speed at which vibration occurs. If vibration is observed on a parked vehicle at this engine speed, the reason should be looked for in the layshaft (out-of-balance, bended fastening bolts or flexible coupling flange, jammed CV-joint). Test 3. If no vibrations was diagnosed during tests 1 and 2, go to test 3. Accelerate the vehicle to the speed, at which vibration occurs, and place the transfer- and gearbox levers in neutral position. If vibration persists, the reason should be looked for in the front or rear propeller shaft (out-of-balance, jammed joints) or interaxial differential is not balanced.
BTW: one should always use a clutch tool. Any hard abuse of the input shaft will cause damage to the bearings (for instance: leaving the gear hanging on the input shaft for a second because the box won't pop into place)
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spikes
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Post by spikes on Sept 11, 2011 8:23:54 GMT 2
Hi all The dimensions of the tool that i have are as follows: Length: 137mm Thickness(Width): 34mm (radius 17mm) Tapered piece in front end length:16mm Width at narrowest portion of taper:22.5mm Hole in front end: 14mm dia Depth of hole: 127mm The taper does not from a shoulder like the one Marius has but tapers off at about 17 degrees regards Spikes
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Post by ronnie on Sept 11, 2011 11:11:41 GMT 2
Hi Jan The vibrations do not fit any of the profiles in the manual. They are there from 60 to 120 and only vary in the degree of vibration. The worst being at about 80, but unacceptable at any speed. Today I removed both prop shafts and there is back and forward movement on the TC levers nearly at all revs. The least amount is when the TC is spaced down about 10 mm. This would tell me that there is a problem with the rear gearbox mount? but it looks fine. One thing which bothers me is the TC mounts are hard against the back of the slots, which can`t be right. There is no balance washer on the rubber doughnut and it has been like that since I bought it. Comments from all would be appreciated. Ronnie Attachments:
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Post by ronnie on Sept 11, 2011 11:12:57 GMT 2
Hi All Here is another photo for what it is worth. Ronnie Attachments:
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Post by ronnie on Sept 11, 2011 11:13:54 GMT 2
Hi All Another Attachments:
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90ladaniva
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Post by 90ladaniva on Sept 11, 2011 14:27:28 GMT 2
Hi guys ,Good to see im not the only one that got vibration problems .My Niva has a vibrating prob around 90 KLh and its not real bad but just enough to be anoying .Im starting to get quite sick of it now and am thinking of ripping the whole box and transfer case out alltogether and modify a Holden Jackaroo box and case which is an all in 1 unit and that will stop this sh-t from happening anymore .I might start susing this out very shortly i think .Cheers Trev .
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Post by ronnie on Sept 11, 2011 16:16:36 GMT 2
Hi Trev
I think an all in one box would be the ideal. If I only had a bit of vibration at 90 I would not be concerned. For me it would be easier to tell you where I DON`T have vibration.
Ronnie
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Post by ronnie on Sept 11, 2011 16:27:50 GMT 2
Hi Jan
As an add to my last post, it would appear with the TC mounts being hard against the mounting studs, the TC is trying to pull the doughnut to wards it. As a temp measure I put 4 washers between the CV joint and the input flange of the transfer case. Now, there is no back and fore movement of the levers, and the mounting studs are in the middle of the mounts, which leaves room for adjustment in both directions. Tomorrow I will figure out a more permanent arrangement, and refit the props and see what happens.
Ronnie
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ladanivabelgium
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Post by ladanivabelgium on Sept 12, 2011 3:54:07 GMT 2
seems that the only issue is a badly centered TC then. On the baxter site is a nice youtube about that
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90ladaniva
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Post by 90ladaniva on Sept 12, 2011 4:43:47 GMT 2
Hi Guys ,I cant help but think why oh why did Lada ever take this rout with the transfer case .Does any one know what made them take this bloody stupid sepperate TC doughnut Idea instead of makeing a complete gear box transfer case 1 peice unit .I would like to really find out as there may be something im missing here .Im sure there must be some one out there amongst all the Niva owners in the world that would know the answer to these Vibrating isues that we are all having with these Cars .Would there not be another gearbox transfer case one peice unit that would fit these motors out there some where just waiting to be discovered by someone hey . The currant set up is a real put off for these otherwise great and very capable Little 4x4s.Cheers Trev .
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90ladaniva
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Post by 90ladaniva on Sept 12, 2011 12:58:29 GMT 2
Well Guys ,Today i took the rear Tailshaft of the Niva and Locked the Diff lock in and went for a cruise and wound the old girl up to 115 Kilometres an Hour and Guess what ,No vibrations what so ever .So it was great to drive the Niva with no Vibes all most wanted to keep going for days as it was just Great .Now ive got it narrowed down to worn Rear TC Bearing or Tailshaft out off Balance ,As the UJs are in exellent condition .So hopefully by Tomorrow i may be driving a Vibe Free Lada Niva But will still go ahead With my plans for a all in one combo Gear box and Transfer case .Cheers Trev .
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Post by Charles on Sept 12, 2011 13:29:58 GMT 2
Great news Trev. I think its eitheer the tc rear bearing or the angle of the rear prop.
Charles
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Post by ronnie on Sept 12, 2011 13:58:02 GMT 2
Hi Trev
Even when you put a new bearing in the rear output of the TC there is always some play. I have put mine back together so will report back later.
Ronnie
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90ladaniva
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Post by 90ladaniva on Sept 12, 2011 14:01:20 GMT 2
Hello Ronnie ,Your Vibrating Problem sounds pretty bad news mate especially for some one like you who is very clever and mechanicaly minded to be Faced with this problem .Your Niva seems to be serviced regularly and all ways well maitained so its hard to Believe Hey that your problems seem all most impossible to sort out .I Think i am getting mine sorted as today i took the rear tailshaft off and took it for a run on only the front Prop shaft and found no vibrations what so ever .So it looks to me as if the rear transfer case bearing is stuffed or the rear Tail shaft is out off Balance So hopefully by Tomorrow Night i will have my Vibes sorted out .Cheers Trev .
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Post by ronnie on Sept 12, 2011 14:21:54 GMT 2
Hi Trev
If you read my earlier post you will notice I mentioned the fixing slots in the TC case mountings are hard against the studs. After looking closely at it it looks as if the intermediate shaft is about 4 mm too short. It is impossible to adjust it when you only have adjustment in one direction and in fact it wants to go the other way !!!!. What i did today was remove the TC and made a 4 mm spacer to go behind the input flange. The result is the mountings are in the centre of the adjustment. It is all assembled and when Vincent arrives we will try it. That way I will have a second opinion as to what the improvement is if any. And yes Trev, the vibration has been driving me crazy for longer than I can remember. In the past if I did something which helped a bit I was frightened to try anything else in case I made it worse again. ;D ;D ;D ;D
Ronnie
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Post by ronnie on Sept 12, 2011 16:24:08 GMT 2
I will move these posts out of the sub frame thread later.
Hi All
If you read my earlier post today you will see what I did to overcome the problem with the TC mountings. Vincent has tried it and agrees with me that there is at least a 50% improvement in the vibration which is now acceptable. Why the intermediate shaft appears to be +- 4mm too short is open to debate. All I know is putting a 4mm spacer behind the TC input flange has cured the problem. This is the first time I can honestly say there has been a worthwhile improvement. When stationary there is vibration still apparent from the intermediate shaft at certain revs but there is no balance washer fitted. I will experiment with one and see if I can improve it .
Ronnie
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hoodoo
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Post by hoodoo on Sept 12, 2011 20:06:14 GMT 2
One that always seems to get overlooked is the rubber washer assembly (metal washers in older Nivas) that fit on the end of the gearbox output shaft and go into the transfer box bracket to which the doughnut is bolted. If you get vibrations from about 60mph onwards, that's a good place to start. Regards,
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Post by ronnie on Sept 12, 2011 20:11:17 GMT 2
Hi Hoodoo (John)
I have checked mine and it is all in order. The big problem has been the mounting position of the studs in relation to the slots in the mountings. This I have resolved by cheating.
Ronnie
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hoodoo
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Post by hoodoo on Sept 12, 2011 20:22:40 GMT 2
Now THAT'S the same the world over! ;D One thing about Nivas, they bring out the inventive streak in us all! John
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Post by danie on Sept 13, 2011 5:42:54 GMT 2
Now THAT'S the same the world over! ;D One thing about Nivas, they bring out the inventive streak in us all! John That's the very reason why I love my Lada to pieces . ;D
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Post by marius on Sept 13, 2011 9:31:26 GMT 2
Hi Ronnie
I seem to remember a series of pics on your TC and the mountings and I can't find them >> can you direct me to the thread please?
Marius
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Post by ronnie on Sept 13, 2011 11:33:06 GMT 2
Hi Marius When I moved the posts I stuffed it up . You should find the posts all under this thread now. Ronnie
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Post by marius on Sept 13, 2011 11:49:40 GMT 2
No problem Ronnie ;D
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ladanivabelgium
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Post by ladanivabelgium on Sept 14, 2011 6:27:39 GMT 2
Good fix, Ronnie ;D
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Post by ronnie on Sept 14, 2011 9:15:12 GMT 2
hi Jan
wanted to try a balance washer on the 3 doughnut bolts but we are having rain here so it will need to wait until the Sun decides to reappear.
Ronnie
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