I just found out my 4x4 truck has an open differential...the 4x4 has always been great, so i don't really get it...is it FOR SURE an open rear end when you jack it up and one tire turns the opposite of the other easily?
2007-01-12 11:09:11 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Chevrolet
First of all, just jacking up the rear and spinning one wheel is not a guaranteed way to determine the presence of a locking rear, which is what your truck MAY have. However, since you didn't mention what year, brand, model, etc your truck is, I can only guess. Since this question was filed under Chevrolet, I will assume that's what you have. GM trucks could be optioned with an Eaton automatic locking differential. There are 3 ways to determine its presence. First, there's the visual inspection, but you have to remove the rear diff cover. You'll see the 2 flyweights and clutch packs inside. Second, the option sticker in the glove box will indicate the RPO "G80". Third is the functional test. Get 1 wheel on grass, the other on dry pavement, give it about quarter pedal and see what happens. The wheel on pavement should start to spin and leave a patch. However, once the rear wheels reach about 20 MPH, a flyweight will disengage the locking mechanism and will once again act like an open diff. This is to allow you to get unstuck, but not spin the truck around. Otherwise an inexperienced driver would have the diff lock on a wet curve, then not know how to keep the back from coming around.
2007-01-12 12:26:37 · answer #1 · answered by Hambone 4 · 0⤊ 0⤋
John's partly comfortable with the outline (supply him the props), however the numerous of operation is a touch distinct. The posi is largely a pair of spring loaded clutches. at the same time as the only wheel slips, it overcomes a kind of a spring rigidity to reason the clutches to grip, shifting torque. warmth somewhat wouldn't have something to do with it - the nice and comfortable temperature and "constrained-slip" nature of the clutches is really what causes the placed on, not the grip. however, in essence, the numerous is real in that it acts as an open differential till a distinction in wheel speed is encountered. From a "layman's attitude", a 12 bolt posi is between the perfect rear ends that GM slapped into passenger automobiles - its a very solid component to have, it would want to take care of a good load of skill, and could very last for somewhat a at the same time as till you abuse the motor vehicle.
2016-12-02 04:33:08 · answer #2 · answered by broadway 4 · 0⤊ 0⤋
Traction 4x4
2016-12-12 12:47:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋
i work for the state of mich. and in the last 10 years we've had 1/2 ton Chevy's, 3/4 ton dodges, and currently 1 ton super-duty fords. none of them had posi. unless you plan on mud bogging or something extreme like that you don't need it. it's amazing what they'll go through as long as you have good tires. not good tread itself, but good traction design.
2007-01-12 12:52:09 · answer #4 · answered by mark h 2 · 0⤊ 0⤋
That is not always the way to tell if you have a posi, some limited slip diffs will spin that way. My Ford 9" will spin that way, but you put it in mud/dirt and both wheels will always trac. I wouldn't expect to have a limited slip, most domestic auto makers (GM being the worst) you have to order it with a posi.
2007-01-12 11:21:04 · answer #5 · answered by mad_mav70 6 · 0⤊ 1⤋
Yes it is an open rearend. Most trucks do not have any sort of posi-traction. I have never understood why anyone would order a 4x4 without it, but ...................
2007-01-12 11:22:07 · answer #6 · answered by jimbobb1 4 · 0⤊ 0⤋
usually posi is an option and if you jacked it up and one wheel went one way and the other wheel the opposite you definately don't have posi.
2007-01-12 12:23:11 · answer #7 · answered by mister ss 7 · 0⤊ 1⤋