ihatepoundland Posted April 29, 2007 Share Posted April 29, 2007 What is AFWD? Is it assisted front wheel drive? It doesn't seem like too common a term to use, would Hydraulic front wheel assist have been a better term Have I got the wrong end of the stick? Quote Link to comment Share on other sites More sharing options...
powerrabbit Posted April 30, 2007 Share Posted April 30, 2007 What is AFWD? Is it assisted front wheel drive? It doesn't seem like too common a term to use, would Hydraulic front wheel assist have been a better term Have I got the wrong end of the stick? The term AFWD refers to the system Active Four Wheel Drive. Would anyone have a brochure of this to correctly describe and explain the system? Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted April 30, 2007 Author Share Posted April 30, 2007 How does that differ from MFWD or HFWD? Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 1, 2007 Author Share Posted May 1, 2007 Anyone... Quote Link to comment Share on other sites More sharing options...
archbarch Posted May 1, 2007 Share Posted May 1, 2007 How does that differ from MFWD or HFWD? as i understand it MFWD was mechanical front wheel drive and HFWD hydraulic front wheel drive i maybe wrong but the HFWD was only fitted to a Deeres for a while in the UK not a very good system my uncle had a 3130 HFWD on demo at high revs the front wheels would spin like crazy AFWD must be a U.S. term as ive never come across it before Quote Link to comment Share on other sites More sharing options...
jdc Posted May 1, 2007 Share Posted May 1, 2007 Just a thought....is AFWD JD's term for auto engagement for braking, disengagement when front wheels pass a certain angle etc. Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 1, 2007 Author Share Posted May 1, 2007 as i understand it MFWD was mechanical front wheel drive and HFWD hydraulic front wheel drive i maybe wrong but the HFWD was only fitted to a Deeres for a while in the UK not a very good system my uncle had a 3130 HFWD on demo at high revs the front wheels would spin like crazy AFWD must be a U.S. term as ive never come across it before Thanks , that was my understanding and i've seen the 4020 with HFWD so I assumed AFWD is HFWD. I typed "AFWD + Tractor" into google and all I got was references to the Britains model...so it doesn't seem to common a term at all, I'm puzzled. jdc, I don't understand why FWD would be in that term? \ Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 5, 2007 Author Share Posted May 5, 2007 Don't fail me brain trust! is there a real world example of the 4020 with mention or badging of AFWD? Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 5, 2007 Author Share Posted May 5, 2007 Yes, I believe I mentioned it in the title of the thread? ETA - someone removed a post, hence the nonsense Quote Link to comment Share on other sites More sharing options...
SIMON. Posted May 5, 2007 Share Posted May 5, 2007 http://cgi.ebay.co.uk/John-Deere-4020-rare-4wd-tractor_W0QQitemZ220109278642QQihZ012QQcategoryZ11757QQrdZ1QQcmdZViewItem Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 5, 2007 Author Share Posted May 5, 2007 Good find I don't see anything on that that says AFWD - its hydro. SO, what does the "A" in "AFWD" stand for? Have Britains used the wrong term on their boxes? I've seen one seller describe it as All Four Wheel Drive - but that is a bit of a funny way of putting it. Quote Link to comment Share on other sites More sharing options...
MDFord Posted May 5, 2007 Share Posted May 5, 2007 Did they used to call the hydraulic front wheel drive "assisted" ?? I think that might be perhaps what the A stands for. Quote Link to comment Share on other sites More sharing options...
britainswomble Posted May 5, 2007 Share Posted May 5, 2007 Did they used to call the hydraulic front wheel drive "assisted" ?? I think that might be perhaps what the A stands for. I'm pretty certain you are right as My uncle had a later version with that type of four wheel drive. Unfortunately it wasn't very successful as when you lost traction on a front wheel, all the drive went to that one making it spin wildly as it was driven hydraulically. When this happened the four wheel drive became ineffective. It assisted as it wasn't positively mechanically linked. Quote Link to comment Share on other sites More sharing options...
Kiwi6920 Posted May 5, 2007 Share Posted May 5, 2007 As far as i rember AFWD is the proper name for HFWD, it is just something that you would use when you are truly in the $hit, My farther inlaws 4240 has AFWD, and he said you never use it longer than 5 mins and never at more than half revs, when you do it spins the wheels far to fast( as mentioned) and it frys oild seals and stufs up basicly, was a good paper idea but crap in reality, I have been told the best thing to do with them is take them of, chuck it way and put on a real 2wd axle as it wont fry your hydrolic pumps Quote Link to comment Share on other sites More sharing options...
ihatepoundland Posted May 5, 2007 Author Share Posted May 5, 2007 Aha, I think you guys have found the answer, that system sounds completely rubbish, shame, it'd probably work nowadays with some complex electronics. Quote Link to comment Share on other sites More sharing options...
Kiwi6920 Posted May 5, 2007 Share Posted May 5, 2007 Aha, I think you guys have found the answer, that system sounds completely rubbish, shame, it'd probably work nowadays with some complex electronics. Just another thing waiting to go wrong there, it could be done easliy today i recon, touque senser in the gear box, pressue vales for the flow control and some excvator type final drives and i recon you would have a good 4wd with teh 2wd turning radius and stil be reliable, I could be totaly wrong with saying that also \ Quote Link to comment Share on other sites More sharing options...
powerrabbit Posted May 5, 2007 Share Posted May 5, 2007 A couple of years ago the local John Deere dealer just a few miles from me were having problems with some of the new models they were selling, cant recall the models, not being into them, but the problem was that they were scuffing out front tyres in a matter of months rather than years and they had great difficulty in finding out the cause. To make a long story short, the outcome was, as I suspected when I heard of it, was that they fitted the wrong transfer gear in the factory and the front wheels were trying to go faster than the back wheels. Even the big boys get it wrong sometimes. Quote Link to comment Share on other sites More sharing options...
NIGEL FORD Posted May 5, 2007 Share Posted May 5, 2007 I believe the Americans refer to any 4wd system with smaller front wheels as Four or Front wheel drive ASSIST, hence the A or "assisted four wheel drive" due to the inability to transfer full traction to the front wheels due to slippage through the diff etc & at this time of night I'm not going into all the technical attempts to alleviate this such as Ltd slip diffs, torque-biasing axles etc. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.