How to stop an LT getting stuck |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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Posted: 28 Nov 13 at 00:40 |
Does anyone know how to stop an LT getting stuck on soft ground or gravel roads?!
Flora is constantly slipping one back wheel on real basic terrain. We need to keep about 5 bags of cement in the rear, and sometimes also need to deflate the rear tyres, even for minor challenges. Anyone got a remedy or limited slip diff center? |
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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I have the same problem and it drives me nuts, especially on light snow/ice. I have a set of chains for the wheels but that can be a real pain.
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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Rabbit 16v
Yardie Joined: 24 May 13 Location: Seattlish Status: Offline Points: 647 |
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Add 4x4. Problem solved.
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Chris
1985 LT40 4x4 2.5 TDI 1987 LT28 Florida 1985 LT45 Sülzer D24TI 1992 LT40 4x4 D24t |
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AndyT
Moderator Group Joined: 16 May 08 Location: Ammanford Status: Offline Points: 2274 |
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Off road isn't somewhere LT's are designed for, too little weight over the driving wheels and low gearing.
Keeping a full tank of fuel will add weight @ 10lbs a gallon, but maintaining momentum is the key. If you do get stuck, then an old bit of carpet etc under the spinning wheel can help, as can applying the handbrake slowly. Bound to be some advice on youtube etc. Chains will help to maintain momentum but fit them before you get stuck. |
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LT28 1979 2.0 Pampas Nevada Camper LPG 93K, 1980 T3 A/C Camper 98K,1994 RRC 3.9 LPG 120k , 1998 Audi A6 Est 2.5 V6 diesel 127k
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Rabbit 16v
Yardie Joined: 24 May 13 Location: Seattlish Status: Offline Points: 647 |
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Is an option for using a rear diff locker possible? Perhaps using a rear end from a 4x4 with a locker? I am not familiar with gear ratios compared to 4x4 vs 2wd.
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Chris
1985 LT40 4x4 2.5 TDI 1987 LT28 Florida 1985 LT45 Sülzer D24TI 1992 LT40 4x4 D24t |
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jason k
Admin Group twinklerims Joined: 14 Jan 05 Location: Wales Status: Offline Points: 15934 |
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Winter tyres may help too.
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Bcs shallowest surf award winner 2006
camperjam 2011 chug and tug team member aberdare. south wales newest member of karmann korner no longer the only moderator to manage to ban himself |
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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Winter tires don't help when the snow has turned to ice under the tire. I think studs are needed
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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gregozedobe
Vanorak Joined: 22 Dec 06 Location: Canberra, Oz Status: Offline Points: -998266 |
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An old trick is to partially apply the handbrake (if it operates on the drive axle) - this will reduce the spinning and transfer some torque away from the spinning wheel back to the one with more traction.
But as suggested by others, a locking diff is a more effective solution (maybe an ARB air-locker if they make one for an LT, or is there an OEM fitted by VW ? ). Of course a 4x4 conversion with locking centre and front and rear diffs would give better results again, but won't make an LT an off-road tractor by any means. Tyre tread also comes into play - a smooth "road" pattern won't get the grip of a more aggressive off-road tread on slippery grass and dirt/mud, but more aggressive treads tend to wear more quickly and make a lot more road noise.
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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Wow!! What an amazing response! I thought i was all alone...
Yeah, diff lock is the go; or independent L/R service brakes could do it. Thanks for the input everyone. There's a difflock listed in the VW parts catalogue. Does anyone know if the LT diff carrier was used in anything else? Has anyone got tech drawings and dimensions? I've been thinking of grafting on some wings so Flora can fly. She's a bit of a goose at times. |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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If anyone has an old carrier center I can maybe match something up and send the results back out to the community; can maybe fit the axle gears into an alternate LSD or locker carrier
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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HB, if you can find any reference to the diff lock, please share it because I cannot find anything and this truck is a royal pain in the ass in partial ice. Never had this problem with my T4s.
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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I have the ELSA software which lists parts and shows images but alot is no longer in stock from VW germany; they threw it all in the scrap bin; gear sets nada...
Maybe an 8" lsd centre from a pajero might be able to be adapted... All that's need is the planetary gearset and stock crownwheel adapted to what ever carrier. I did an MG TF years ago; went from 4.875 to 3.9. All the white-coats said the car would never pull it. Haha, thing did 110mph straight past xjs's; cruised at 70mph and gave back 45mpg! Information that I've found says the 4x4 units were built by a third party separate to VW If anyone has a centre carrier they can measure up I can maybe match/machine something up. Can't be too hard, its just metal... |
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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If I understood half of what you just said, I'd be a mechanic....but I'm just a wanna be.
I'll have to bone up on what this looks like I guess so if you have any pics or drawings, ......pretty please. |
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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Understand... I've been turning tools since age three... Unconscious awareness...
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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I can use a lathe and mill, fit boilers, rads, solar panels and a bunch of other shit but I still don't get the innards of diffs and trannys (not transexuals, transmissions) and much other crap but i am willing to learn (although not about the transexuals, haha)
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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Canada, all you need to do is get a good text book about gearboxes and final drives and start reading; one that shows you the line of movement through various components. It's really simple stuff. If you can understand how a spanner turns a nut then you're 85% of the way there!
If you can use a lathe and mill and have access to them then you can mod out a diff center from a suitable donor vehicle. All you do is match up the exterior sizing of the OEM center; distance between main carrier bearing journals, the inside diameter of the crownwheel mount, match up the fixing threads of the new crownwheel and the distance (off center location) of the crownwheel mounting face between the two main journal mounts. i.e. the crownwheel needs to be located in the same exact position relative to the input pinion gear. Any carrier of similar dimension can be adapted so long as you follow the above. Additionally you need to adapt the actual 'differential' planetary gearset (the inner small four gears) to the new carrier in order to retain the OEM axles with matching splines. A bit of micrometer measuring involved, fitting spacers and shims, possibly some grinding. You will still be left with a restricted choice of available final drive ratios but you will get your diff lock or lsd. Depends how much originality you want to retain. The real crap stems from the 5 x 160mm PCD used for the road wheels. What a dumb idea. Its the only dumb idea I've come across on the LT |
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Canada LT28
Vanorak Joined: 03 Jan 10 Location: Toronto Status: Offline Points: 1632 |
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Is the crown gear the same as the ring gear?
Also, I have probably the worst final drive ratios around as top speed MIGHT be 105kph and I would like to increase that somewhat. I know there are other ratios available and will be looking for another set in the UK or Germany. This would be a start to getting the diff lock done as well. |
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94 LT28 Doka 2.4D
Slow and built to stay that way 87 T3 soon to be a camper |
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HoneyBunny
Groupie Joined: 23 Sep 12 Location: London Status: Offline Points: 62 |
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Yes, the crown wheel and ring gear are the same thing; commonly referred to as 'ring & pinion' pinion being the smaller gear. Depends on what country you're in.
You can find out your ratio by jacking up one rear wheel mark the tire and drive shaft with chalk, count how many turns of the drive shaft to one turn of the road wheel and divide by two. That will be your ratio. Mine's 4.875:1. There's also a flat spot on the top and/or right of the diff housing . Go to the tech section and download LT gearbox and final drive PDF and look at the pics to find out exactly where it is. <http://www.brick-yard.co.uk/forum/technical-manuals-current-link_topic57738.html> Here are some OEM build plate codes and part numbers to get you started: FINAL DRIVE RATIOS 9E/8B - 53/14 - 3.78:1 - P/N 281/291 525 143 G - MODEL 5T - $1300 AUS 5T - 53/13 - 4.07:1 - P/N 281/291 525 143 H - MODEL 9E - $800 AUS 8Y - 41/10 - 4.10:1 9C/8W - 40/9 - 4.444:1 6C/8V - 39/8 - 4.875:1 8C/2L - 43/8 - 5.375:1 7C - 41/7 - 5.857:1 AGJ - 45/7 - 6.420:1 CARRIER - 291 525 121 A - 8V/8C/6C/7C/9C/9E/5T/AGJ CARRIER - 281 525 121 A - 2L/8Y8V/8W/8B Again, all parts are no longer available from VW Germany. This chat is starting to get off the subject a little. I'm likely to get the stick for getting too technical. So just PM me if you want more guidance. If you want P# for the diff lock I could probably trace them, but they will be of no real use as all stock has been deleted. BTW Ford Mk6 T1N transit vans use a 3.77:1 ratio |
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LTCamper89
Vanorak Joined: 18 Apr 12 Location: The Toon Status: Offline Points: 4285 |
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No such thing.!!! Never too late to learn. http://www.brick-yard.co.uk/forum/lt1-008-gearbox-ratios_topic82131.html more gearbox stuff from recent months.
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1989 LT28 2.4D Saviour of 6Music, well one of them. Now playing http://www.bbc.co.uk/radio/player/bbc_6music
VW LT Camper not Cramper ....at least the roof is not rusting away.... |
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Rabbit 16v
Yardie Joined: 24 May 13 Location: Seattlish Status: Offline Points: 647 |
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Instead of taking this to PM, perhaps it could be moved to the technical section? This way others can benefit from this information in the future..
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Chris
1985 LT40 4x4 2.5 TDI 1987 LT28 Florida 1985 LT45 Sülzer D24TI 1992 LT40 4x4 D24t |
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