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I have a 1986 426 cat rubber tire backhoe with a Perkins…

Customer Question
I have a 1986...

I have a 1986 426 cat rubber tire backhoe with a Perkins engine I have had starting issues even in warm weather , I have installed a new battery D4 with 1000 Cold cranking amps installed a new ground cable and new ends from battery to frame and from frame to the end of the starter and this has helped in warmer weather but it is -10 C out and will not turn over fast enough with out connecting jumper cables . I had the starter checked it is ok my engine oil is 10w 30. What else can I do or check . This engine has never seem to turn over very fast for some reason and then on a few occasions it will turn over fast like I think it should.

Mechanic's Assistant: What is the complete model and serial number of your machine?

426 cat sn 7BC01077

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

Not really

Submitted: 6 months ago.Category: Medium and Heavy Trucks
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Answered in 3 minutes by:
1/2/2018
Technician: Curtis B., Technician replied 6 months ago
Curtis B.
Curtis B., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 31,407
Experience: Technician turned service manager on multiple lines of trucks and engines, used in industry.
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Welcome to JUST ANSWER heavy equipment. With years of experience, I look forward to doing my best to help.

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Technician: Curtis B., Technician replied 6 months ago

The typical starting issue, where the engine does not spin as fast as t should for start, is a hydraulic load on the engine from a hydraulic component, loading the system. Work all the hydraulic levers as you crank, and see if any make it easier. And try the steering, whip steering wheel back and forth to see if it changes.

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Customer reply replied 6 months ago
Well that would make sense because on a very few time warm or cold it would turn over faster but usually it just turns over very slow
Technician: Curtis B., Technician replied 6 months ago

I have seen it on tractors and backhoes, where one function does not neutralize as it should, which loads up the engine at startup.

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Technician: Curtis B., Technician replied 6 months ago

Check it and let me know what you find. I'm off to bed!

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