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Topic: 428 cat backhoe rear end slippage
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Author [expand] [Modern View]

01-26-2015 13:35:45

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I am at wits end. The backhoe stalls on a grade in two wheel drive with the drive shaft spinning. If I engage the four wheels the front will pull me ahead. So nothing wrong with the trans. or torque converter. I have had the rear end apart twice and can find nothing wrong. It would seem impossible for the drive shaft to turn without the wheels turning unless there was gear teeth or splines missing but everything looks perfect. If I engage the differential lock it pulls the hill just fine in two wheel drive. That tells me the problem is out board of the differential but there is nothing to slip without making shrapnel. I understand Ford makes the rear end for Cat. Any ideas?

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Brady V

01-26-2015 17:39:16

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Re: 428 cat backhoe rear end slippage in reply to nitris, 01-26-2015 13:35:45  
Is there a rim spinning in the tire?

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01-26-2015 18:10:20

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Re: 428 cat backhoe rear end slippage in reply to Brady V, 01-26-2015 17:39:16  
I checked that. It is a brand new tire and they painted it up with some kind of goo when the mounted it on the rim. All the dried goo marks match up so if it spun it returned to exactly the same place. I should add that I was pushing pretty hard with the blade when it lost power to the rear wheels but I didn't feel or hear anything pop. Its the right side that seems to be slipping. The same side the differential lock is on. If I am on loose dirt the rear end veers to the right before it stalls with the engine racing because the power is going to the right wheel. It is not a problem on flat ground and requires considerable torque before slipping.

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