 | Home > Tdi > HELP!! R380 Mainshaft Support Bearing Removal |
 
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| Retroanaconda Member Since: 04 Jan 2012 Location: Scotland Posts: 2656  
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It would be a gearbox strip to change it.
There is supposed to be play in that shaft when the box is not fitted to the engine, as it is designed to be supported at the front by the bush in the crankshaft. When unsupported it will wobble about. |
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27th Jan 2023 7:22am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421  
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Do not know how different the R380 is to the LT77, but the LT77 has got some shims to set the input shaft bearing, which will only need to remove the front cover plate (the thingy that supports the thrust bearing) to change. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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27th Jan 2023 12:43pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74 
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Thanks guys, it saves me knowing there is supposed to be play.
You guys are the real MVPs !! |
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27th Jan 2023 1:41pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Dinnu, is there supposed to be any in and out play as well? I have slight play when I push the input shaft towards and away from the GB. |
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4th May 2023 3:34am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421
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There are 2 bearings on the input shaft. One is 'outside' and support the input shaft on the casing, and another on the 'inside' that is between the input shaft and the mainshaft. Depends on how much the slight play is, as that could let the mainshaft go out of alignment. I do not have the manual with me, but my guess is that there should be no axial play.
However I do not think that a slight axial play there would explain your issues you describe in your other posts. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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4th May 2023 4:35am |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Thanks for clearing this up Dinnu, I think something is lodged in between the clutch and the flywheel or something because it's only when the GB and the engine come together I have the issue of not being able to rotate the engine by hand or be able to select any gears using the gear stick when the engine is off.
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4th May 2023 11:57am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410 
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What do you mean by "play"?
The shaft does normally move up and down when exposed like in that photo. It is only fully supported when inserted in to the spigot bush in the flywheel. Or do you mean play in a rotational direction? |
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4th May 2023 1:29pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Let me see if I can explain clearer..... If I am holding the input shaft in my hand with it pointing towards me I can move it from left to right as to my knowledge is normal, however, I am also able to move it inwards to the GB and outwards towards me.
So in technical terms I am getting play on the Z Axis which has me worried... Apart from that, I think I found the issue...After removing the clutch and pressure plate I noticed the Pilot bushing is knackered, what do you guys think? List of pictures below:  Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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4th May 2023 2:02pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17443 
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Is it the correct clutch, and is the clutch fitted correctly? Is is the correct spigot bearing and is the bearing fitted correctly?
I have encountered problems similar to this when the clutch driven plate has been fitted back-to-front, or other weirdness has happened. Edit: my post crossed with your previous. The spigot bush does look knackered, and if that debris was inside the bush it would quite possibly have rammed the input shaft hard against its bearings making it impossible to turn. |
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4th May 2023 2:03pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Yes it is the correct clutch and was installed correctly, I never touched or removed the clutch and the truck was working fine, I only removed it to change the broken clutch fork.
To me honestly the clutch plate looks like it still has on lots of meat and the pressure plate looks good also, should just replace the spiggot bushing and go back up? |
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4th May 2023 2:09pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421
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Knackered spigot bush or not, you should be able to rotate the engine by hand when the engine and gearbox are mated.
I am wondering if the clutch fork is fitted correctly, or if it could be binding on the pressure plate, causing the engine to bind. Would have been a good idea if you had removed the slave cylinder before you removed the engine, and checked that the fork has free play (forward and backwards). 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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4th May 2023 5:10pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Damn!!
I guess all I can do now is to get the new bush, and put back up more attentively this time. I was pretty sure I reinstalled everything to spec, I will post a picture below with the clutch fork so you can see how it was setup, then you can confirm with me if you see any irregularities. Click image to enlarge Click image to enlarge Click image to enlarge |
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4th May 2023 5:30pm |
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| BajanRover Member Since: 12 Feb 2021 Location: Barbados Posts: 74
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Another question, let's say hypothetically there was no play from the SC rod on the clutch fork, what does this mean and what would be the solution to fix it? Also i think while I'm at it I should change the crank seal lol, seeing a lot of oil residue inside of the bell housing and I was leaking a lot of oil in between the engine and the gearbox housing before. Last edited by BajanRover on 4th May 2023 5:45pm. Edited 1 time in total |
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4th May 2023 5:43pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3421
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Before putting the engine back, do the following:
A. Put a straight edge over the pressure plate, and measure the distance from the straight edge to the engine bellhousing. Do this at various positions, so you can calculate an average with high confidence level. B. Put a straight edge over the gearbox bellhousing and measure the distance from the striaght edge to the clutch fork, where the metal reinforcing tab is welded. If value from A is less than the value from B, then there is clearance, and can install the engine. If value from B is less than or equal the value from A, then there is interference, and would be better to find why B is less than A. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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4th May 2023 5:45pm |
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