Ford Jubilee hydraulics

Tamarvintage · Dec 26, 2020

Hi all
I have a Jubilee over here the Uk, obviously a bit different to the common Fergusons and fords we have here, but I do love the little thing
But Ive been having problems with the hydraulics, after a few days of being left, they wont lift until I bleed the pump and then there fine again, Ive drained them and put in fresh oil and again fine for a few days then come back to it after 2/3 days and wont lift until I bleed them again
Im guessing must be an air leak or a valve not seating?
Any advice would be greatly appreciated
Thanks

Jim L WA · Dec 26, 2020

If you're not seeing any fluid leaking, then I would agree with you, that the pump must be at fault. Have you checked where the tubes connect to the pump are tight?

Royse · Dec 26, 2020

Vane pump or the later rotary pump?

Tamarvintage · Dec 27, 2020

Not sure the tyre of pump but looks like the original

WayneIA · Dec 27, 2020

The piston pump will be kinda round and have a 3/8 pipe plug near the top and towards the front of the pump.. The original vane pump will be configured
kinda squared in nature.

Tamarvintage · Dec 27, 2020

Thanks, I think it must be a piston pump as its round and has a 3/8 plug as described on the top

pomester · Dec 27, 2020

In my experience your situation suggests that the seal is leaking around the pump drive shaft. This is located in the housing section where the proof meter cable attaches. There are two versions with different bearing setups between the early and late. The early version is no longer serviced and while it's been several years, I recall having this situation and upon disassembly for R&R I was unable to fix the issue and ended up acquiring a later style pump. This is not the 'vane vs piston' pump, but rather the 'early vs later' piston pump. Note that the pump proper is unchanged between the versions, it's the bearing design associated with the pump drive shaft that is redesigned.

Tamarvintage · Dec 28, 2020

(quoted from post at 09:31:29 12/27/20) In my experience your situation suggests that the seal is leaking around the pump drive shaft. This is located in the housing section where the proof meter cable attaches. There are two versions with different bearing setups between the early and late. The early version is no longer serviced and while it's been several years, I recall having this situation and upon disassembly for R&R I was unable to fix the issue and ended up acquiring a later style pump. This is not the 'vane vs piston' pump, but rather the 'early vs later' piston pump. Note that the pump proper is unchanged between the versions, it's the bearing design associated with the pump drive shaft that is redesigned.

Excellent, thank you for your reply, Ill probably pull it appart and if if our local bearing a seal shop and supply anything to suit!
Changing topic, but how do you all post pics on here?
Thanks

Ford Jubilee hydraulics

Tamarvintage

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Jim L WA

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Royse

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Tamarvintage

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WayneIA

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pomester

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