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 Posted: Fri Feb 01, 2013 3:38 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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any idea what's the cause of that?
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Posted: Fri Feb 01, 2013 4:05 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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In the photo it is difficult to see but are the breaks, or the most recent part of it thinner than the metal on adjacent teeth.
Were there any symptoms leading up to the failure?
Is there wear on adjacent teeth and is that wear only on a section of the crown wheel as that could be worn / seized or partially seized bearing.
I have seen similar; boy racer doing a tyre spin pull away. Just as the car started to move off it dropped into quite a big pot hole. The resultant jolt sheared the teeth. The boy racer was my brother in a Vauxhall Viva.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Fri Feb 01, 2013 7:14 pm |
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Joined: Mar 29, 2010
Posts: 3977
Trade Rating: +15
Location: Halifax
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Strange, I know the crown had a tenancy to drop out but not heard of that one. Wheel spinning while the wheel is turned generally shags the planet gears but not sure if it could cause damage to the crown.
Excessive play in the bearings could stress it. Lack of lubrication could play a part. Not sure how else it could be overloaded.
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Posted: Sat Feb 02, 2013 4:33 am |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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no ideal at all, that is my mate's gearbox. I think the crown wheel teeth broke during the rally event at speed 
wasn't too powerful either. stock 1.6 16v with kent cam
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Posted: Sat Feb 02, 2013 9:23 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| Seabook wrote: |
no ideal at all, that is my mate's gearbox. I think the crown wheel teeth broke during the rally event at speed
wasn't too powerful either. stock 1.6 16v with kent cam |
Clasic down-shift mashup by the looks of it.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sat Feb 02, 2013 3:08 pm |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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wasn't shifting when it broke.
we though it might be the poor quality of the crown wheel
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