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Farmall & IHC Tractors Discussion Forum
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INTERNATIONAL 384 INJECTOR PUMP

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CHARLIE H

01-07-2007 17:13:43




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AM GETTING FUEL TO BOTTOM OF INJECTOR PUMP BUT NONE TO TOP I GUESS I HAVE TO TAKE IT OFF TO GET IT REBUILT MY ? IS HOW HARD IS IT TO TAKE OFF AND PUT BACK ON ?




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richard in nz

01-08-2007 21:40:53




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 Re: INTERNATIONAL 384 INJECTOR PUMP in reply to CHARLIE H, 01-07-2007 17:13:43  
If you can bleed it to the bleed screw at the bottom of the pump, then crack some injector pipes loose and bleed up to the injectors, the tractor should start. Then you can slaken the top bleed screw and bleed the top screw while the engine is running. This can be a problem with the CAV type DPA pump if the machine is fitted with flexible fuel lines then clamping the return line with a pair of vice grips with the jaws protected will enable you to bleed it manually which is what I used to do on old Manitou rough terrain forklifts which were fitted with an I-H 434 skid unit. Do not leave the engine with out bleeding to the top screw as eventually the govenor linkage in the top of the pump will stiffen up through lack of lubrication by the diesel fuel flowing through it.

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Fromjb2

01-07-2007 17:42:39




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 Re: INTERNATIONAL 384 INJECTOR PUMP in reply to CHARLIE H, 01-07-2007 17:13:43  
Hi Charlie, before telling you how to remove the pump, I will ask a couple of questions:
1)Did the tractor stop all of a sudden or is the problem caused by changing fuel filters or running out of fuel?
2)Did you follow the fuel system venting (bleeding for N.America) procedures?

The reason I ask these questions, is these tractors can be difficult to prime the injection pump.
We had a B414,434 & 384, all the same tractor but newer models the B414 & 384 you could change the fuel filters and just bleed the fuel system at the fuel filters and put the throttle on full and start and away they would go but the 434 always had to do a complete bleed including cracking injector lines.

If you have tried all the above, post back & I will tell you how to mark and remove injection pump.

JimB

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CHARLIE H

01-08-2007 15:52:39




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 Re: INTERNATIONAL 384 INJECTOR PUMP in reply to Fromjb2, 01-07-2007 17:42:39  
THE TRACTOR IS NOT MINE A FREIND BOUGHT THE TRACTOR I TOLD HIM I WOULD POST THE ? . I KNOW HE HAS CRACKED THE FUEL LINES BUT OUT SIDE OF THAT I JUST DONT KNOW . I HAVE NOT WORKED ON IT YET. I WAS TRYING TO GET SOME KIND OF IDEAL BE I GOT IN TO IT.



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Fromjb2

01-09-2007 18:51:59




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 Re: INTERNATIONAL 384 INJECTOR PUMP in reply to CHARLIE H, 01-08-2007 15:52:39  
Hi Charlie, I am having trouble posting replies, so will post in 2 small replies. It has been about 40 years since I had the injector pump off a 434. The 384 is the same except it has an alternator that has to be either removed or held up out of the way.
1)Shut off the fuel line
2)Clean the area of all dirt, grease and loose paint.
3)Precisely mark on the pump and the mounting plate the exact location of the pump. This is important as the mounting holes are slotted and this controls the pump timing so if it is re-installed in the same position the timing should be correct.

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Fromjb2

01-09-2007 18:53:27




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 Re: INTERNATIONAL 384 INJECTOR PUMP in reply to Fromjb2, 01-09-2007 18:51:59  
4)Loosen all the injector lines and the fuel lines but do not completely remove yet.
5)Remove the front timing cover on the fan side and mark everything as well. There should be 3 cap screws thru the timing gear that screw into the drive hub on the pump, remove them.
6)Remove the 3 nuts and washers that hold the pump to the rear of the timing cover.
7)With a friend holding the pump firmly remove the injector and fuel lines.
8)The pump should pull out of the cam drive gear.
9)Mark location of drive hub to pump body.
10)Seal all holes and fuel lines to prevent dust and dirt contamination.
10)Do not turn engine over with pump removed.

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