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John Deere Tractors Discussion Forum
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JD 720D Power Steering Dipstick

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04-20-2017 20:31:43

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On my 720D, I noticed the power steering dipstick has a hole straight thru it. Is there supposed to be a filter or plug in the hole to keep the dirt out? I see that my 730D doesn't have this hole in the dipstick. Does anyone know why they're different? Also, is the fluid level supposed to be checked warm or cold?

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04-21-2017 16:47:04

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 Re: JD 720D Power Steering Dipstick in reply to Johnb730D, 04-20-2017 20:31:43  
I have used a cut down NAPA fuel filter, also sintered bronze, part number 3050. Used J B Weld to secure it in the dipstick.

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04-21-2017 04:24:44

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 Re: JD 720D Power Steering Dipstick in reply to Johnb730D, 04-20-2017 20:31:43  
Does anyone know if the filter that presses into the top of the dipstick is still available from John Deere parts? If so, what is the part #?

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04-21-2017 07:46:27

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 Re: JD 720D Power Steering Dipstick in reply to Johnb730D, 04-21-2017 04:24:44  
Even in the old paper parts catalog I have the sintered bronze inserr isn't shown separately of the cap/dipstick.

If you want to risk twelve bucks, you could order the little sintered bronze disc that goes at the bottom of the airhorn in old Schebler carburetors and see if that could be made to fit, DEERE or Schebler part # 95-78.

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04-20-2017 23:00:59

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 Re: JD 720D Power Steering Dipstick in reply to Johnb730D, 04-20-2017 20:31:43  
The parts catalog shows there were two versions of the PS fill plug/dipstick for the 720 as serial numbers progressed, then a third part number for the 730.

IIRC, some (or all?) versions of the fill plug/dipstick had a sintered bronze filter at the top to allow venting of the PS system, (there's no other way it's vented) while keeping dirt and dust out..

As to checking the level, I don't know which is correct, warm or cold, but I wouldn't expect the level to vary enough so that would matter.

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