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Old 05-17-2010, 06:03 PM   post #1 of 4
kmusslewhite
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Join Date: May 2010
Location: Texas
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Default D4 7U Manual track adjustment help

I have a '52 D4 7U series crawler dozer and need to tighten up the tracks. Unfortunatly, the dozer is about 100 miles from my house. I want to buy a wrench for the adjusting nut but can't seem to find out what size wrench to buy. Anybody have that information?

While I'm at it, anybody know the size of the track roller grease fittings. Is it 5/8 or 7/8?
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Old 05-17-2010, 08:36 PM   post #2 of 4
masterdave
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Default Re: D4 7U Manual track adjustment help

I had to make my own wrench
offset around 10/12 degrees if I remember
short handle like 4 inches
flame cut from 1 1/4 inch steel plate,
The idea is a pipe handle OR use as a striker wrench with a sledge hammer
If this Cat has not had a track adjustment for some time it will require heat to move the adjusting shaft
My advice is take some steel plate and a torch, sledge , and the kitchen sink when you go to do it ,
Hope this helps
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Old 07-29-2010, 10:53 PM   post #3 of 4
Ira
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Default Re: D4 7U Manual track adjustment help

My D4 track adjusters were rusted solid so I did what might be a no-no. I exposed the tension springs and used a 20 ton hydraulic jack against my blade arm and the yoke for the idler. My tracks were very loose and I sucked the rear of the spring 1 1/4 inch away from the rear bolster (?) and made a U shaped steel insert to place behind the spring. It's working well for me!
Ira
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Old 04-20-2013, 10:59 PM   post #4 of 4
TNBart
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Default Re: D4 7U Manual track adjustment help

Bringing this old thread back up for a look. I too have a D4 with the manual track adjuster on a loose track. Im dreading getting it loose. Just so I have this straight, you have to looses the stopper nut on the rear of the adjuster then turn the adjuster. Hot much heat do you need? I tried a propane torch, not luck there. Thank you.
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