4w low problem
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Freshman User
Joined: Oct 2007
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4w low problem
i have a 88 f150 4x4 when its in 4 low on level ground its seems to work fine but when starting up a hill it seems to jump out of gear or something. when it happens it sounds like the gears are grinding or like they are slipping i know its a major problem. but where should i start to look.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 12
From: Sand Lake, MI
Are you sure you're getting the shifter all the way back into "low"? if not it'll skip, grind and bang something awful. And no, its not good for it.
Lube up the shift linkage and make sure you get it all the way into 4 low.
If not you got transfer case problems by the sounds of it.
Lube up the shift linkage and make sure you get it all the way into 4 low.
If not you got transfer case problems by the sounds of it.
Senior User
Joined: Oct 2002
Posts: 272
Likes: 1
From: Grande Prairie, AB
sounds like a lubrication problem, low gears are torn, blown and chipped off. soon as it starts to put major load on the gear setup the gear no longer holds mesh, starts chipping off more gear.
Here is what you do, pull the drain plug on the transfer case, catch the oil with a suitable catch pan, plastic kitty litter box will do fine, edwards coffee can too, but the oil will fill a 2 liter container. When the oil is draining, watch for chunks of metal coming out, if this is the case, allow all oil to drain out, the next question at this point is, are you willing to repair it or is 4H good enough? If 4H works and there is no problems there, you could get away for awhile, until finally the bearings pile up, or the seals get ripped by residual metal filings still in the case and all oil drains out and allows the bearings to pile up. You could take the chance, but my recommendation in that case would be to flush the transfer case with diesel fuel, add it to the case and take a cruise around the block, come back and drain it again before adding good ATF to the system. This may or may not do good for you, but it will get more of the filings out.
Your other option is to pull it and rebuild it with new gears, my guess is it isnt worth it, a used unit with good shaped internal would be the best choice.
If the oil is not contaminated, de-regard the above, and check the linkage, because you want to drain it after gears have been clashing around, there is no filter present in those transfer cases, if a chunk of gear cracked off it stays in there and gets crushed and then turns to small filings.
Here is what you do, pull the drain plug on the transfer case, catch the oil with a suitable catch pan, plastic kitty litter box will do fine, edwards coffee can too, but the oil will fill a 2 liter container. When the oil is draining, watch for chunks of metal coming out, if this is the case, allow all oil to drain out, the next question at this point is, are you willing to repair it or is 4H good enough? If 4H works and there is no problems there, you could get away for awhile, until finally the bearings pile up, or the seals get ripped by residual metal filings still in the case and all oil drains out and allows the bearings to pile up. You could take the chance, but my recommendation in that case would be to flush the transfer case with diesel fuel, add it to the case and take a cruise around the block, come back and drain it again before adding good ATF to the system. This may or may not do good for you, but it will get more of the filings out.
Your other option is to pull it and rebuild it with new gears, my guess is it isnt worth it, a used unit with good shaped internal would be the best choice.
If the oil is not contaminated, de-regard the above, and check the linkage, because you want to drain it after gears have been clashing around, there is no filter present in those transfer cases, if a chunk of gear cracked off it stays in there and gets crushed and then turns to small filings.
