Cat DH4 blade lift cylinder rod end nut torque spec: Caterpillar  -- Construction Discussion Forum and Review Cat DH4 blade lift cylinder rod end nut torque spec: Caterpillar -- Construction Discussion Forum

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 06-30-2006, 23:12 Post: 131604
earthwrks

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 Cat DH4 blade lift cylinder rod end nut torque spec

My buddy and I are working on his mid-late '90's DH4 that has a leaking lift cylinder. I was going to help him take it apart but his mechanic friend told him that the rod end nut for the piston requires an impact wrench to remove it. Supposedly it takes at least 1200 lb. ft. of torque to remove it---does that sound right? I rebuilt my backhoe cylinder with a wrench and no breaker bars. Any input appreciated.






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 06-30-2006, 23:21 Post: 131606
kwschumm



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 Cat DH4 blade lift cylinder rod end nut torque spec

Sounds strange to me but there's a lot I don't know. To get that much torque you'd probably need a 1" drive impact wrench. How big is the cylinder?






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 07-01-2006, 13:01 Post: 131611
earthwrks

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 Cat DH4 blade lift cylinder rod end nut torque spec

The cylinder is about 5-6" diameter and maybe 24-28" long.
Hi mechanic buddy told him he had to buy a $2400 impact to remove one for another guy so don't even mess with it. I can't imagine a nut that probably is maybe 2-1/2" needing a wrench that big. All it does is hold the piston on the rod.


Oneace (Tony) are you there?






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 07-01-2006, 13:01 Post: 131612
earthwrks

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 Cat DH4 blade lift cylinder rod end nut torque spec

The cylinder is about 5-6" diameter and maybe 24-28" long.
Hi mechanic buddy told him he had to buy a $2400 impact to remove one for another guy so don't even mess with it. I can't imagine a nut that probably is maybe 2-1/2" needing a wrench that big. All it does is hold the piston on the rod.


Oneace (Tony) are you there?






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 07-01-2006, 15:31 Post: 131613
kwschumm



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 Cat DH4 blade lift cylinder rod end nut torque spec

A brand new 1" drive Ingersoll Rand impact wrench that will do 1400 ft lbs of torque costs less than $500 at Northern Tool. Onceace has his pm feature enabled so you could try sending him private mail.






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 07-04-2006, 16:53 Post: 131685
dirthog



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 Cat DH4 blade lift cylinder rod end nut torque spec

not postive for that cyl but excavator cyls the same size we rebuild are a lot higher than that smaller dozer cyl we do are also more than that






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Discussion Boards > Active Subjects > Messages as Posted > Caterpillar Forum

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dirthog 1 | earthwrks 3 | kwschumm 2 |




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