URGENT HELP NEEDED

rscob · Post by **rscob** » Sat Aug 14, 2010 1:40 pm

Don't know if anybody can help me i'm struggling like f-ck to try and get the bearing housings off my granada cossie lsd,it needs a special tool [no jokes please] to undo them,i'm going to swap the crown and pinion from 3.62 down to a 3.38 to help with the 4.0 v8 fitted,anybody around manchester,stockport area got one of these i could borrow,or any great ideas to get these f-ckers off.
Cheers rob

gelmonkey · Post by **gelmonkey** » Sat Aug 14, 2010 4:20 pm

Rob
What kind of tool is it?
Spline drive ?
Torx?
Or something completely different?
Paul

rscob · Post by **rscob** » Sat Aug 14, 2010 8:12 pm

gelmonkey wrote:Rob
What kind of tool is it?
Spline drive ?
Torx?
Or something completely different?
Paul

Hi paul,its the 20 odd splines that when you remove the drive studs from the diff it holds the bearings in,
rob

gelmonkey · Post by **gelmonkey** » Sat Aug 14, 2010 8:53 pm

Hi Rob
I have some spline drives here which may or may not help but cant post them until Monday eve.
Is this of any help to you?
cheers
P

rscob · Post by **rscob** » Sun Aug 15, 2010 10:12 am

gelmonkey wrote:Hi Rob
I have some spline drives here which may or may not help but cant post them until Monday eve.
Is this of any help to you?
cheers
P

Hi paul,
thanks for the offer but i managed to weld/fabricate a tool to do the job,got one side off last night and just on my way into the garage to have a go at the other side,if you ever need to do this on a ford granada/sierra diff give me a shout i now have a tool for the job,thanks for the kind offer though.
rob

SuperV8 · Post by **SuperV8** » Sun Aug 15, 2010 2:41 pm

I have just done the exact same job. Are you changing the bearings as well? If you change the pinion and crown wheel to a different case then you should also adjust the pinion height which is very difficult! much easier to keep the gears in the same original case then you can get away without doing this difficult job with. Have you undone the pinion nut yet? you'll also need another special tool. i made one cutting a 12 point socket in half a welding a bracket on.
Tom.

stevieturbo · Post by **stevieturbo** » Sun Aug 15, 2010 4:56 pm

SuperV8 wrote:I have just done the exact same job. Are you changing the bearings as well? If you change the pinion and crown wheel to a different case then you should also adjust the pinion height which is very difficult! much easier to keep the gears in the same original case then you can get away without doing this difficult job with. Have you undone the pinion nut yet? you'll also need another special tool. i made one cutting a 12 point socket in half a welding a bracket on.
Tom.

Pinion depth is absolutely critical, and a nightmare to get right.

As he says, at all costs leave the pinion installed in its original casing unless you have damn good reason to remove it.

rscob · Post by **rscob** » Sun Aug 15, 2010 5:43 pm

SuperV8 wrote:I have just done the exact same job. Are you changing the bearings as well? If you change the pinion and crown wheel to a different case then you should also adjust the pinion height which is very difficult! much easier to keep the gears in the same original case then you can get away without doing this difficult job with. Have you undone the pinion nut yet? you'll also need another special tool. i made one cutting a 12 point socket in half a welding a bracket on.
Tom.

Well i managed to get the other bearing housing off so i could remove the lsd from inside,the plan is i have a 3.38 granada diff so i am going to install the lsd into this after i change the crown wheels over,but what a b-stard of a job,and yes i will be changing the bearings and oil seals i've left the pinion nut on as i only needed the lsd from it thank god coz i wouldn't know where to start to undo that as you need to somehow lock it before you can even attempt to undo the star shaped nut.the reason i'm changing the diff ratio is i have a 3.62 diff in my cobra and a 4.0 rv8 so the 3.38 should drop the revs a bit and also first gear is pretty much useless.
rob

kiwicar · Post by **kiwicar** » Sun Aug 15, 2010 7:28 pm

I would surgest you have a read
http://www.ehow.com/how_2159877_set-up- ... ntial.html
It is a job requiring patience and engineering blue (messy) and is tricky to say the least. I would recommend finding someone who has done it many times before to help or send it off to a reconditioners to do it for you.
Best regards
Mike

SuperV8 · Post by **SuperV8** » Mon Aug 16, 2010 11:55 am

It will be a lot easyer not to take the pinion out but I had to as the pinoin bearing was knackered.

Have a look at the link. There are a few photos of my diff rebuild, night be of some help:

http://forum.daxsportingclub.com/phpBB3 ... =35&t=4305

I presume you have the re-build manual? If not PM me and i'll send it you.

Tom.

rscob · Post by **rscob** » Mon Aug 16, 2010 2:56 pm

Tom how do you remove the roll pin to get the diff gears out,i can see the split pin holding it in place but not too sure how to get it out,btw pm sent.
rob

SuperV8 · Post by **SuperV8** » Tue Aug 17, 2010 11:40 am

The roll pin for the open diff is longer than the roll pin for the lsd diff. You only need to remove it if you are changing the sun/star gears. (Only two of the gears I think are interchangable between lsd and open). IIRC the roll pin just needs drifting down so then you can tap the axle out, I remember drifting the lsd roll pin down and having a small panic thinking that I would then have to dismantle the lsd to retrive the roll pin. That is why I started taking the lsd appart, got half way then had an epiphany, I think the roll pin was retrivable, I forget how but definatley not through the lsd plates although it was very interesting looking inside one

I haven't recieved a PM

Tom.

rscob · Post by **rscob** » Tue Aug 17, 2010 5:20 pm

SuperV8 wrote:The roll pin for the open diff is longer than the roll pin for the lsd diff. You only need to remove it if you are changing the sun/star gears. (Only two of the gears I think are interchangable between lsd and open). IIRC the roll pin just needs drifting down so then you can tap the axle out, I remember drifting the lsd roll pin down and having a small panic thinking that I would then have to dismantle the lsd to retrive the roll pin. That is why I started taking the lsd appart, got half way then had an epiphany, I think the roll pin was retrivable, I forget how but definatley not through the lsd plates although it was very interesting looking inside one

I haven't recieved a PM

Tom.

Thanks for the reply,yes i need to swap over 2 0f the star gears as there badly pitted[the small ones on the axle that the roll pin holds]so your saying drift the roll pin down on the lsd where does it go i don't really want to split the lsd.i will pm you again.
rob

SuperV8 · Post by **SuperV8** » Wed Aug 18, 2010 11:53 am

PM sent.

The roll pin just needs to be tapped down, then you can tap out the axle. I think the roll pin will come back out the way it came if you turn the diff upside down.

My planet gears were also worn and pitted, I guess from the action of the LSD because the open dif gears were fine.

Tom.