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Old 09-11-2001, 09:22   #1 (permalink)
NB & NCII V8 Fairlanes
 
Join Date: Feb 2001
Location: Bibra Lake Western Australia
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Stripped Dizzie Gear

The shaft in the distributor of my 89 NB 3.9 MPEFI Fairlane
appeared to have partially seized stripping the distributor gear
(three teeth gone),

Questions:

a) The auxiliary shaft gear when viewed through the distributor
mounting hole looked Ok but should I replace it as a matter of
course?

b) What should the distributor shaft and bush be lubricated
with? The Ford factory manual says SAE90 oil, other manuals
suggest high temperature bearing grease or silicon grease.

c) I haven't been able to find the broken teeth (I assume they're
in the sump or oil filter) ; should I worry or just change the oil and filter?



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Old 09-11-2001, 16:16   #2 (permalink)
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Blue,

The bits wont make it to the filter as they have to go through the oil pump and they wont get past the pickup screen. Have a good look for them when you drain the oil. Make sure the cam gear is ok too otherwise it will chew the dizzy gear out....
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Old 09-11-2001, 18:30   #3 (permalink)
Two SC 61's = trouble
 
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Yes it's a worry.Finding can be expensive and it maybe just wear.Can I suggest a strong magnet araldited[spelling] to you sump plug or secured some how, change the oil often for the next week or two.If you have driven it the damage,[obviusly you have?]would have allredy been done if any?.Could be in filter but it would have gone through your oil pump,Oil pressure o/k= don't worry.

Lube on shaft: So long as there is some on first start up,then engine oil takes over.. Grease can clog your filter especially on cold oil..
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Old 09-12-2001, 03:36   #4 (permalink)
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once youve got the dissy out make sure that the bush inside it hasnt collapsed, that theres not much play in the shaft and that nothings come loose or binding up the shaft (which may have braoken the gear).
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Old 09-12-2001, 04:31   #5 (permalink)
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Getting Worse

Looks like the oil pump is also seized; I can't turn it with a small socket on the pumps hex drive that sits at the base of the dizzie hole. Bugger!
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Old 09-12-2001, 05:48   #6 (permalink)
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well at least you know why the gear is stripped!!


Very rare for these motors to do oil pumps though! Did you have oil in your engine previosly??
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Old 09-12-2001, 06:04   #7 (permalink)
NB & NCII V8 Fairlanes
 
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Plenty of oil (dead set on the full mark) and I change the oil and filter every 5000 km or two months and I only changed it a week ago, I'm told they can break valve seals and gets the bits stuck in the pump that then locks up.
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Old 09-13-2001, 06:07   #8 (permalink)
Two SC 61's = trouble
 
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Looks like you'll find the answer when you check out the pump. Good luck.
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Old 09-16-2001, 05:37   #9 (permalink)
NB & NCII V8 Fairlanes
 
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Dizzie

What amuses me is that:

a) Ford said there was only two replacement dizzie gears in stock in Australia.

b) You have to drill your own roll pin hole in the gear; ay $12:00 per gear you'd think you'd get them pre drilled. Only thing I can think is that you could drill the hole in a different place to ensure optimum gear mesh rather than use shim washers.

Given the risk of getting the hole. wrong I bought both. But I drilled the hole and got it right I think.... well it lines up with old broken gear hole,
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Old 09-17-2001, 03:09   #10 (permalink)
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WTF!!!

Are you sure you went to ford dealer?

Most Bursons, Autoone and Repco keep gears in stock and ALL that ive ever installed have got a hole pre-drilled.

As long as you got it going, thats the main thing.

The shims on top of the gear are only necessary to take out the "play" from the dissy bush. If you put a new top bush in the dissy and install it correctly, you shouldnt need the shims:p
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