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post #1 of (permalink) Old 03-10-2003, 05:00 PM Thread Starter
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plastic gears in F550 manual?

Please tell me this isnt true...

I recently started a new job in a Hydraulic pump, cylinder, hose shop and one of my co-workers (a chebby owner but dont seem the type to make up BS...) told me after the discussion of transmissions already came up, that one of our regular customers with a fairly new F550, had his manual trans fail 3 times already and couldnt believe it when the mechanic showed him the defective parts *some* of which were plastic gears (and NOT the speedo drive), is this so?
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Craig
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post #2 of (permalink) Old 03-10-2003, 06:16 PM
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Re: plastic gears in F550 manual?

Wow. I have no answer to that.
Amazing!
I thought Ford gave up on the plastic gears after all the timing chain problems several years ago. [img]images/graemlins/mad.gif[/img]
I'm sure you're one of the folks here that have actually seen those gears from the '70's! [img]images/graemlins/wink.gif[/img]
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post #3 of (permalink) Old 03-10-2003, 07:29 PM Thread Starter
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Re: plastic gears in F550 manual?

70s????
my 86~ 302 had one [img]images/graemlins/mad.gif[/img], after the cam gear shed all its teeth at 109K and stopped the oil pump & pick-up screen twice (after a timing set replacement) with the plastic fragments despite flushing the oil pan with sovent, this IS the reason theres a rebuilt 95~5.0 HO under my hood since --------- but in a *550* trans?
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post #4 of (permalink) Old 03-12-2003, 05:45 PM
 
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Re: plastic gears in F550 manual?

umm, dont know if its the same part, but I've heard a similar story about plastic SYNCHRO gears in newer ford's...something about teflon / thermoplastic baulk rings??? ( I cant see the main gears being plastic, but plastic synchros 'almost' sound plausible..)

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