TimC
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| posted on 1/11/06 at 10:26 AM |
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Sierra Diff Torx Bolt Sizes
Greetings.
I need to buy a Torx Head Set primarily to take the lobros off my diff (driveshafts are cut in half!) and also to remove the back plate.
Can anyone tell me what size sockets I need? Halfrauds do a couple of sets and I want to make ture that I get the right ones. Nowhere near the diff
so can't get the verniers out!
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mookaloid
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| posted on 1/11/06 at 10:40 AM |
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Not sure what the sizes are, but you will probably need to loosen the bolts on the joints with a hammer and cold chisel before using the Torx bit -
otherwise you will probably break your new Torx bit!
Replace the torx bolts with New Cap head allen bolts when rebuilding.
Cheers
Mark
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jimgiblett
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| posted on 1/11/06 at 10:41 AM |
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My best advice is to cut the heads of the torx screws with a grinder. The stubs can be removed with a pair of molegrips. Then replace with phosphor
coated 12.9 grade M8 50x1.25 socket head cap screws.
- Jim
[Edited on 1/11/06 by jimgiblett]
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TimC
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| posted on 1/11/06 at 10:49 AM |
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Cheers for the tips... I know the score on those fronts...
Does anyone remember the sizes?
Ta
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NS Dev
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| posted on 1/11/06 at 11:05 AM |
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Torx 45 iirc, but whatever you do don't try to use a halfords one to undo them.
I broke several snap on ones many moons ago before I decided that i would never even try to undo another one, grinder is default tool now!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Hammerhead
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| posted on 1/11/06 at 11:06 AM |
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Not 100% but T45 rings a bell.
My Halfords one worked, you could try wd40 or applying heat if they don't move.....I reckon I was lucky with mine, and I have now replaced them
with cup heads as suggested already.
[Edited on 1/11/06 by Hammerhead]
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mcerd1
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| posted on 1/11/06 at 11:08 AM |
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can't remember the size for the back plate (45 or 50's ???) but the lobro's use 40's
the halfords pro sets are the strongest cheep ones I've used yet - and if you use them to dismantle your lobros you can take them back every
time you bust one
I went through 5 of various makes on 1 pair of shafts, then hamer and chisel for the 3 that wouldn't move
next time I'll hammer and chisel the lot (I've got 2 more sets to do)
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mcerd1
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| posted on 1/11/06 at 11:13 AM |
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according to my brother (who fixes tractors for a living) he's seen snap-on ones brake alot ! but halfords ones not nearly as much
besides if you bust a halfords one that cost all of £2 you'll be a bit anoyed, if you bust a £20+ snap-on one you'll be 
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SALAD
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| posted on 1/11/06 at 11:29 AM |
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As previously stated Lobro's are T40 and the back of my Diff is T50 
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TimC
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| posted on 1/11/06 at 11:32 AM |
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Thanks folks!
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smart51
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| posted on 1/11/06 at 11:40 AM |
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I got a get of grips and clamped the outside of the diff backplate bolts to loosen mine. They all came out.
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chris_harris_
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| posted on 1/11/06 at 02:13 PM |
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Well i got all my torx heads out and am going to replace all the lobros with 12.9 cap heads, but what have people all used for the back plate on the
diff? Had to cold chisel all mine off.
Regards Chris
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mookaloid
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| posted on 1/11/06 at 02:57 PM |
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Sorry to those people who ues a grinder for this, but having done it both ways, I can definitely say that the hammer and cold chisel used to loosen
the bolts is the quickest, least noisy and least likely to damage the joint method.
Cheers
Mark
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givemethebighammer
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| posted on 3/11/06 at 12:01 AM |
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I used the impact wrench to get mine out, broke one halfords T40 bit doing it. They all came out with very little trouble and halfords replaced the
broken T40 no questions asked. Just make sure you put your goggles on.
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richard thomas
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| posted on 3/11/06 at 08:47 PM |
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Ahem...there are two sizes of torx heads used by Ford on the lobro joints - i know because i broke two sizes of halfrauds torx drives on them. I
didn't realise until i got hold of a second diff and got the bolts mixed up!!
Don't knock the halfrauds ones, they are cheap enough and replaced no questions, no charge. They do twist a bit first though before they work
harden.
Tim, i'll try and get out to the garage tomorrow and confirm the two sizes. That said i would definately recommend changing to allen heads - i
intend to when i remove my shafts next.
Rich.
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