Transmission? TC? Problem
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Transmission? TC? Problem
The other day I started my truck and when I put it in gear it just made a clicking noise and would not go. I can put it in 4hi or lo and it goes fine. Will not move in 2wd just clicks ?????
1981 F150
1981 F150
FTE Legend
Joined: Jul 2010
Posts: 32,875
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From: Northeast, OK
That has to be either the transfer case or the rear axle. And I would bet on the t-case being the issue. But the reason it may be the rear diff is that when in 4hi or low it feeds power to both the rear and front axles. So if the rear is bad you will still go.
You can test this by removing the front drive shaft and trying to go. If it still goes the problem is the t-case.
You can test this by removing the front drive shaft and trying to go. If it still goes the problem is the t-case.
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
it would seem to not be shifting all the way into the 2wd position. Haven't ever heard of a t-case not working in 2wd, pretty sure it is a direct link , like a manual transmission, but would have to study up on it to know for sure. AN easier way to check if you have manual hubs is to unlock the hubs, then shift into the 4 hi position and see if you still have movement. If the truck has auto hubs, then you could simply jack a wheel up and see if it tries to move. You could jack the rear up, leave the trans in park, and see if the wheel will spin. If so, the rear is out, as long as the opposite tire is still down.
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Joined: May 2010
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From: BC Cana'duh
A Ford 9 inch rear has the removeable center section that makes it easier to access the gears.Put both rear wheels on stands and have someone spin the drive shaft by hand while you "listen" at the diff.If the wheels don't turn and you can hear grinding then it's time to pull the axles and replace the center section. You can get a used center section with the same gear ratio from the junkyard or craigslist for cheap.It's not that hard to replace.Make sure the gear teeth are square and that there isn't any "play" or "slop".I doubt that it's axles as they tend to leave the housing if they snap.If you don't have a service manual then this Forum is a great place to get step by step guidance to help with R&R.
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From: BC Cana'duh
I just re-read post #4.Pull the driveshaft and then the center section as its likely a snapped pinion or broken spider/side gears.Don't prolong the agony.My 9 inch in my E150 4x4 van came apart while driving on the highway.I rarely take it offroad.Stuff happens.I replaced it with a Detroit locker and 2 months later it snapped an axle and spit out the right wheel complete with brake drum still attached.
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Beat the rain. Pulled axles and pumpkin. Put axle back in on the ground. If I spin the ring gear the axles turn. However, if I hold the axle I can still turn the ring gear. Spiders? The splines seem ok on both axles.
The axle tag reads
WFE AW 1G31
3L50 9 S319B
I assume the spider assembly is one unit??
The axle tag reads
WFE AW 1G31
3L50 9 S319B
I assume the spider assembly is one unit??
Last edited by Old Blue Too; Mar 19, 2012 at 12:14 PM. Reason: more info
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
Not really an effective test, because even working properly, the axle will be able to spin. You need both axles in place to monitor the behavior. You should be able to turn one axle, and the other turns the opposite way unless you have a locker type axle. The ring gear should stay stationary while doing this. The axle will turn with the ring, as the whole carrier is turning, and there is no resistance from the axle.