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d-4 7u No. 44 hydraulic control

d-4 7u No. 44 hydraulic control

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cfbromm
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Need some advice, understanding control plunger and spring. The # of unit is 8f1123 Hydraulic cylinder group right hand.
Are parts readily available?

I am trying to sent pictures, no luck yet.

Thanks for responding.
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Mon, Feb 20, 2023 5:53 AM
PNW.Hillbilly
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All the o-rings are easy to find, if your plunger is worn that might be a problem. Are you having a problem knowing the order to put the bolt, springs, and washers back together?
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Mon, Feb 20, 2023 8:59 AM
Fat Dan
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Reply to PNW.Hillbilly:
All the o-rings are easy to find, if your plunger is worn that might be a problem. Are you having a problem knowing the order to put the bolt, springs, and washers back together?
I recently uploaded to the library " Servicemen's Reference Book Caterpillar Hydraulic Controls and Equipment "
Covers a lot on No. 44 Hyd Controls
No. 46 Hyd Controls
Hyd cyl for bulldozers and implements
No. 40 Hyd Controls scrapers hyd cyl and valves
Flow diagrams
Flow diagrams for the No. 41 Hyd Controls

Hope it helps
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Mon, Feb 20, 2023 11:23 AM
cfbromm
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Reply to Fat Dan:
I recently uploaded to the library " Servicemen's Reference Book Caterpillar Hydraulic Controls and Equipment "
Covers a lot on No. 44 Hyd Controls
No. 46 Hyd Controls
Hyd cyl for bulldozers and implements
No. 40 Hyd Controls scrapers hyd cyl and valves
Flow diagrams
Flow diagrams for the No. 41 Hyd Controls

Hope it helps
No, PNW.HILLBILLY. Thanks for information on the o rings. And Thanks for You Tube videos.
So far, I just pull the plunger out of the cylinder. Just study that relief valve. I have no spring action in relief valve.

Thanks, Fat Dan for your information. I'll checking that out.
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Mon, Feb 20, 2023 9:32 PM
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