Stripped Mounting

General help and support for your Lindeman through 2010 John Deere crawler
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Trich
MC crawler
MC crawler
Posts: 4
Joined: Tue Oct 11, 2005 12:29 am

Stripped Mounting

Post by Trich » Sun Dec 23, 2007 5:30 pm

On my 1956 420 there is a 3/4" bolt that secures the floor plate to the side of the fly wheel housing with a bushing. The threads in the fly wheel housing have become worn to the point they will not hold a new bolt. I am thinking I will need to drill the hole out and tap it up to 7/8. Is this the right way to go?
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JD440ICD2006
350 crawler
350 crawler
Posts: 1113
Joined: Tue Aug 22, 2006 3:57 pm
Location: South Carolina

Post by JD440ICD2006 » Sun Dec 23, 2007 6:48 pm

This sounds like it may be a good candidate for a HeliCoil. It comes with the proper drill to drill the hole, then you thread in the coil. It makes a great rethread back to your original size.
They are available at most of the chain auto parts stores, along with TSC and others.
http://www.emhart.com/products/helicoil ... Ggod5H_JWA
1959 JD 440ICD w/64 Power Angle Tilt Blade
1959 JD 440ICD w/63 Manual Angle Blade
1959 JD 440IC w/602 Manual Angle Blade
1959 JD 730D W SE (many options)
1950 JD M S w/M-20 Mower
1952 JD M W
1955 FORD 640 (burns the most fuel)
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Ray III
2010 crawler
2010 crawler
Posts: 609
Joined: Sat Aug 25, 2007 1:39 pm
Location: Troy, NY

Post by Ray III » Sun Dec 23, 2007 9:53 pm

I just got a 3/4" HeliCoil kit, it was $80. OUCH! That is probably not the last place you will ever need a 3/4" thread repaired on that machine though.
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