12 replies to this topic

[N/A-PWR]

Hi Clint,

I didn't know something had to crush - that don't sound right 

[S pack]

Something doesn't look right about the way the front bearing is sitting. Did you install the front bearing race into the pinion retainer?

[Rockoz]

Just pulling thoughts out of my head here.

Having pulled the odd diff apart over the years, are you sure an inch pound torque wrench is the right tool?

The yoke always seeemed to be a fair bit tighter than that.

Have always used a rattle gun to tighten up the yoke nut.

Only time Ive seen inch pound torque wrenches being used frequently is by an auto tranny mechanic.

Dont take my word for it, by all means check with others.

Mmm yeah Dave.

That bearing should be running on a cone I would think.

[Hell34]

You may need to pre crush the new sleeve in a press to within .020" to .030 of the old one as they are hard to start crushing by hand or you could call Chris Dimmoff at DTM he has solid ones you shim to suit the inch pound tension wrench is only for checking bearing preload after crushing spacer

DTM. 9249 9658

[76lxhatch]

Yep - as above the inch pound torque measurement is for the drag to check bearing preload (the torque required to turn the pinion freely).

You will need to hang off a big bar to get the spacer to crush (do it in very small increments once you get close!)

[Bernie]

Clint ,How loose is your flange yoke on the splines of the pinion ?If there is any movement other than the sliding of it on I would suggest you do away with the crush spacer and fit a solid one .That way you can be sure that it will not come loose at any time .Crush spacers need a fair bit of tension to get them to crush .You have to remember that the nut needs to be tight when it has crushed as well as it giving the correct load on the bearings also you have  the force of the engine trying to push the pinion forward when you give it some grunt .Me I always use a machined pinion spacer as it allows me to set up the contact pattern more easily as sometimes the pinion needs to be shifted to make sure it has the correct contact and I use loctite to keep it together on the final install .Stops it from coming loose and you can tighten the nut up more because the spacer is solid .

As mentioned previously the inch pound tension wrench is for checking pre load not setting it .

Bernie

[purrlx]

Recently done the front diff in my cruiser and it was 320 FOOT pound to set the crush tube squashing

Breaker bar and pipe to start crush then big torque wrench from work

[Bernie]

Clint ,Correct on the 9" and removable pinion holders with the shims for pinion movement .Salisbury type and Banjo type you need to shim the back of the pinion between the bearing .This may mean pulling it apart a couple of times to get it right .That is when the crush spacer creates problems so I always use solids

Bernie

Edited by Bernie, 28 January 2014 - 11:16 PM.

[76lxhatch]

The gears don't make any difference (measure it without the crownwheel installed), but the seal does. It should be on the higher side with a new seal, and new bearings.