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Where to start... 1845b

Tinkerer

Senior Member
Joined
May 21, 2009
Messages
10,171
Location
usa
The last time I bought Case oem's was on ebay. Be very careful there tho. There are a lot of rebuilt and cheap aftermarket ones listed on there.
The last Stanadyne's I bought were from a fuel injection shop. No discounts there or at CNH dealers.:(
 

IpswichCASE

Active Member
Joined
Dec 22, 2020
Messages
26
Location
Massachusetts
So here I am with this engine....

- I have the pump all together and installed
- Timing was straight forward
- My fuel priming pump leaks when I pump it.
- There is fuel to the fuel filters
- I pulled the manual... looked up the injector based on the engine serial number. Purchased injectors off of Amazon
- Installed all injectors, all lines, replaced the exhaust manifold.
- I cracked all my in injectors and cranked it over... no fuel seepage.

I am going to get at it again... going to make sure there is fuel to the pump and then crack 1 line and crank it over.
Am I doing that step correct?

Also, what about pulling the primer pump and replacing it with an electric lift pump? If that's a good idea, how many PSI pump? AND, Im guessing the lift pump just says on all the time? or do you turn them off once the engine is running?
 

IpswichCASE

Active Member
Joined
Dec 22, 2020
Messages
26
Location
Massachusetts
Well, I think my pump rebuild attempt might have failed.:(
Everything looked pretty good. And went back on it was going smoothly and I even added a lift pump because my primer was badly leaking but in the end no fuel was coming out of the injector holes at the pump. Any suggestions? Or should I have it professionally rebuilt?
 

IpswichCASE

Active Member
Joined
Dec 22, 2020
Messages
26
Location
Massachusetts
oPh40X7.jpg

so here is a question…. You can see the top part plunger is spring loaded. On my pump the bottom part is fixed…. Doesn’t move. Is that right or is the plunger stuck frozen? I think it’s not supposed to move. I think it’s just one solid piece. Is that correct?
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
8,515
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
It moves w fuel pressure..
Where are the pieces that go on the pistons that r cupped and ride against the screw in the bottom of the pump.. u got’m.??
U do know there r shims inside the spring piston.??
 

IpswichCASE

Active Member
Joined
Dec 22, 2020
Messages
26
Location
Massachusetts
My mistake... wrong pic. There were some very thin shims. I knew they came from here but forgot where. Do they go in the end between the spring and the screw on cup?
uOUg3mYl.jpg

I wish I could find a good exploded view pic of my pump. All the ones I find seem to be a little bit different. I'll lay out all the pieces and take pics so everyone can see what I have. I've looked and messed with this pump enough now that I am confident where everything goes.

Appreciate the comments and advice.
 
Last edited:

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
8,515
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
The shims go UP IN the piston then the spring..
R u sure u have those pieces on the correct side of the pump.??
The “fixed piston” goes on the CC side..the housing is stamped..
 

IpswichCASE

Active Member
Joined
Dec 22, 2020
Messages
26
Location
Massachusetts
Yup… I read that the fixed side is the “power” side and goes on the side marked with the orientation of your pump….. CC for my pump
 
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