Pinion & Diff Tools - Alfa Romeo Bulletin Board & Forums
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post #1 of 13 (permalink) Old 09-27-2016, 07:04 PM Thread Starter
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Pinion & Diff Tools & setup

I've been trying to buy the Pinion depth setting tools and other transaxle tools for a little while with no success. Rob S. was kind enough to share some drawings of tools with me and the manuals give the dimension of the setting gages. So here they are, when I get a drawing of the pinion backlash tool I'll make that too. I would have rather bought these but I'm assembling a transaxle from some orphan parts and couldn't wait.

C.6.0164

A.4.0136 Indicator stand

I combined C.6.0163 & C.6.0193 length setting tools into one tool

The indicator pictured is to big to use. Part #80740764
from MSC fits into the diff well and is about $36.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)

Last edited by GregSef; 10-04-2016 at 08:44 AM. Reason: added info
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post #2 of 13 (permalink) Old 09-28-2016, 06:49 AM Thread Starter
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I'm still looking for the pinion backlash and preload tools if anyone has them to sell. If not then if you have a set I could borrow them, measure and create drawings. I will make them then.

Greg

1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)
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post #3 of 13 (permalink) Old 09-30-2016, 07:37 AM Thread Starter
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Pinion height tool in action. Looks like I need a thicker shim.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)

Last edited by GregSef; 09-30-2016 at 08:18 AM.
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post #4 of 13 (permalink) Old 10-03-2016, 06:02 AM Thread Starter
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I think maybe this should be moved to the driveline - transmission thread.

Gear pattern on my Verde transaxle. When I set the pinion depth to the distance that was engraved on it I got what I think is a great pattern. Setting it to the value I measured when removing it left with a poor pattern.

It does have a pretty big contact area compared to what I see in the handbooks etc. Next comes backlash to make sure its not to tight.

First 2 pictures are the pinion set to the factory markings next 2 are set to what I measured. I'm going with Giuseppe's setting from the factory.

The LSD is setup as RJ recommended, 1 extra friction plate per side and no preload.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)

Last edited by GregSef; 10-06-2016 at 06:06 AM.
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post #5 of 13 (permalink) Old 10-04-2016, 02:48 PM Thread Starter
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Sunex makes a 30mm crow foot and a 1/2" drive 36mm deep well socket that handle the input shaft and pinion shaft nuts. There about $11 each on eBay.

Sunex 236zmd 1/2-Inch Drive 36-Mm 12-Point Deep Impact Socket | eBay

The link doesn't seem to work so just search for that part number on eBay.

Also a 7/16" 8 point socket seems to work on the square heads of the shift detent bolts. If they are stripped you can hammer on a 3/8" 8 point. Those sockets are about $6

Greg

1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)

Last edited by GregSef; 10-05-2016 at 11:48 AM. Reason: added info
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post #6 of 13 (permalink) Old 10-05-2016, 11:45 AM Thread Starter
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Necessity is the mother of invention. I didn't have the factory tools to measure the ring & pinion backlash. So I made up a piece that jams into the diff carrier. You can not use an 1/2 shaft axle stub because it can move independently. Backlash is .005", so its right where it should be.

Also measured the diff carrier preload. It looks like 15 inch / pounds which is near the top of the spec for new differential bearings. So I think I'm good.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)

Last edited by GregSef; 10-05-2016 at 11:46 AM. Reason: correction
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post #7 of 13 (permalink) Old 10-06-2016, 05:59 AM
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Nice job Greg!

Kevin

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post #8 of 13 (permalink) Old 10-06-2016, 09:00 AM Thread Starter
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Nice job Greg!

Kevin
Thanks Kevin, Like a lot of things Alfa- I never really wanted to get in this deep but here I am.

I modified the Ring & Pinion backlash tool to be able to measure the Differential carrier preload by putting a bolt into it. Then i use a inch pound indicating torque wrench to read it. Specs call for anywhere from about 9 to 17 inch pounds with new bearings. This transaxle measured 13 - 15 inch pounds.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)
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post #9 of 13 (permalink) Old 10-06-2016, 09:30 AM
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As they say, necessity is the mother of invention!

Kevin

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post #10 of 13 (permalink) Old 10-07-2016, 07:17 PM Thread Starter
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Done

I'm just about finished.

Greg
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1972 Berlina Vintage Racer, 1987 Milano Platinum (LeMons Car), 1982 GTV6 EP Race Car, 1974 GTV Vintage Race Car, 2012 VW GTI stage II, 1966 Corvette Coupe 327-350, 2007 Triumph T100 Bonneville. Dearly departed: 1971 Fiat 124 Spider, 1983 Saab 900 Turbo, 2004 Saab 9-3 Aero, 1995 BMW 540i Sport, 2014 Audi A4 (swamped)
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post #11 of 13 (permalink) Old 02-20-2017, 01:38 AM
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Quote:
Originally Posted by GregSef View Post
I've been trying to buy the Pinion depth setting tools and other transaxle tools for a little while with no success. Rob S. was kind enough to share some drawings of tools with me and the manuals give the dimension of the setting gages. So here they are, when I get a drawing of the pinion backlash tool I'll make that too. I would have rather bought these but I'm assembling a transaxle from some orphan parts and couldn't wait.

C.6.0164

A.4.0136 Indicator stand

I combined C.6.0163 & C.6.0193 length setting tools into one tool

The indicator pictured is to big to use. Part #80740764
from MSC fits into the diff well and is about $36.

Greg
Hi Greg
Would you be prepared to make these tools again,, but for money and shipped to Victoria Australia.
I can not get the complete set here and its difficult to find them.

Thanks in advance

Ivan AROCA member Vic Aust.
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post #12 of 13 (permalink) Old 02-20-2017, 07:08 PM
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Ivan, PM sent.

1969 1750 Spider Veloce w/dual webers, 1969 1750 Berlina, 1971 1750 Spider Veloce w/ dual webers, 1985 Spider Veloce 23,000 orig. miles, {Two} 1986 Spider Veloces, 1987 Spider Veloce bought new, 1988 Quadrifoglio, 1991 164S, Plus several more. I think they are breeding.
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post #13 of 13 (permalink) Old 12-12-2018, 02:14 AM
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Quote:
Originally Posted by GregSef View Post
I've been trying to buy the Pinion depth setting tools and other transaxle tools for a little while with no success. Rob S. was kind enough to share some drawings of tools with me and the manuals give the dimension of the setting gages. So here they are, when I get a drawing of the pinion backlash tool I'll make that too. I would have rather bought these but I'm assembling a transaxle from some orphan parts and couldn't wait.

C.6.0164

A.4.0136 Indicator stand

I combined C.6.0163 & C.6.0193 length setting tools into one tool

The indicator pictured is to big to use. Part #80740764
from MSC fits into the diff well and is about $36.

Greg
Hi Greg! Currently I'm in the process of building a perfect transaxle for my 75 TS, and I would need the tools to make it. Can you send me your drawings?
Thanks in advance!
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