340/5 mag crank bearing?
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Spitfiremike
- Posts: 4
- Joined: Tue Nov 05, 2013 11:58 pm
- Location: Michigan
340/5 mag crank bearing?
I'm just wrapping up a resto on a 74 400 I pulled the crank seals to swap them out and the mag bearing outer race turns in the case. The bearing is clean not discolored, most importantly it is free and not seized? So my question is how can the bearing outer race turn in the case if it's not seized or never has been? Is this common? I have a lot of knowledge on the new breed stuff and engines in general, however this puzzles me. Any thoughts would be much appreciated.
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ICCSF 108
- Posts: 4369
- Joined: Sun Jul 17, 2005 12:00 am
- Real Name: Kenny Heins, AKA Grumpy
- Location: Blue Springs Mo.
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Re: 340/5 mag crank bearing?
Only thing I can think of is either a bearing OD not at specs, the ID of the crankcase not with-in specs, This could be caused by a bent or out of specs mag side throw, which would cause a wiggle in the bearing & wear out the bearing contact surface in the case halves.. Put a dial indicator on the mag side shaft & see how far out it is compared to the PTO shaft..
Grumpy
Grumpy
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
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"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
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Spitfiremike
- Posts: 4
- Joined: Tue Nov 05, 2013 11:58 pm
- Location: Michigan
Re: 340/5 mag crank bearing?
Ok, I'll check the runout tonight. Thanks