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Order Ford 640 Parts Online

Re: 640 no hydraulics

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Author  [Modern View]

04-16-2013 17:39:25

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well.. here's the deal. you resleaved the pressure tube right?

you didn't somehow block off the suction tube did ya?

if you had blocked the pressure.. it would be obvious.. it's befor ehte relief.. so something would be spraying and loading the engine.

pullthe plug out of the top of the head of the pump and see if there is oil there... probably not id my guess.

pull off the pump manifold and check to see if you can get oil to free-flow from sump to front of trans thru the pipe. if ot.. there's your problem. if it flows out like it should.. check the manifold for debris. if none.. it's now time to check the pump

ps.. make sure she is spinning.. look at the nose with the tach disconnected/

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04-16-2013 19:28:01

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 Re: 640 no hydraulics in reply to soundguy, 04-16-2013 17:39:25  
I'll have to crack the bolts at the bottom of the hyd. manifold to see if there is flow from the reservoir there.
It's a vane pump (square, no plug that I can find). Not sure how to bleed out the air??
Can I fill the plug at the top of the hyd. cover (one on the right in front of/under the seat). If that connects to the pressure line would you be able to fill the pump from it??
Also while I'm at it is this plug where you would plumb in a valve for a hyd. remote??

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04-16-2013 20:01:57

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 Re: 640 no hydraulics in reply to dmiller, 04-16-2013 19:28:01  
Quoting Removed, click Modern View to seeThere is a plug way down low near front of right running board. Remove it & see if pump will flow there. If nothing there the pump isn't pumping as there is nothing but your sleeved tube between that & pump outlet. The plug in assessory cover is well beyond control valving & therefore not exactly meaningful, as if flow there during lift command, you would have lift.

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