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Do I just keep cranking? New HPOP and Injectors

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Do I just keep cranking? New HPOP and Injectors

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  #91  
Old 05-10-2017, 09:01 PM
6_Myles
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will double check everything, but yes to all previously
 
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  #92  
Old 05-10-2017, 09:52 PM
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It seems to be your HPOP...

Did you use the right gasket? The wrong one will not work properly...uhm...what HPOP are you using?




You do not have check valves in the HPOP fittings (removed them?)

I read there is a way to deadhead the HPOP and test the pressure. Maybe someone remembers the link?
 
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  #93  
Old 05-10-2017, 09:56 PM
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I think the procedure is described in this thread: https://www.ford-trucks.com/forums/1...sure-test.html
 
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  #94  
Old 05-10-2017, 09:57 PM
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Pull one of the oil rail plugs and put it in one of the hpop outlets, then put a 3500 psi gauge on the other outlet and crank it over. It should immediately jump over 3000 psi. If not, it's either a loose gear, or a bad pump.
 
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  #95  
Old 05-10-2017, 10:07 PM
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Did you follow these instructions when you installed the new HPOP?

What about step #17 (aligning the gear)?

See the attached PDF file.
 
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  #96  
Old 05-11-2017, 08:23 AM
6_Myles
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I did follow those instructions and torqued the shaft bolt to 95lbs.
 
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  #97  
Old 05-11-2017, 03:19 PM
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Originally Posted by 6_Myles View Post
I did follow those instructions and torqued the shaft bolt to 95lbs.
How do you *know* the gears are meshed? I haven't done it yet and it doesn't seem to tell you?

Maybe it's obvious
 
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  #98  
Old 05-11-2017, 03:29 PM
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I assume it means that the HPOP is sitting square and flush to the resevior...there's no real 'teeth' on the shaft.
 
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  #99  
Old 05-11-2017, 03:59 PM
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Originally Posted by 6_Myles View Post
I assume it means that the HPOP is sitting square and flush to the resevior...there's no real 'teeth' on the shaft.
I've read about some times where it seemed like it was installed okay, but the teeth weren't properly meshed.

In any case, once you test the HPOP deadheaded, you'll know for certain
 
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  #100  
Old 05-11-2017, 04:43 PM
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Once you open the top of the reservoir you'll see it. When you remove the HPOP front cover plate the 95ft-lbf torqued bolt shown in Fig. 8 of the RR HPOP instruction sheet can be seen, and it holds the gear onto the HPOP input shaft. Once the bolt is removed and the HPOP is slid back out from the reservoir, the gear can be lifted straight up out through the top of the reservoir. It's driven by a gear on the camshaft(?). I don't see how it's possible that this gear can be located anywhere but in contact with the camshaft gear.

I don't remember what keeps the gear locked to the HPOP shaft, but if it's a woodruff key, maybe the new HPOP didn't have a woodruff key on it?
An HPOP rebuilder would know ...
 
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  #101  
Old 05-11-2017, 04:45 PM
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Originally Posted by SaintITC View Post

I don't remember what keeps the gear locked to the HPOP shaft, but if it's a woodruff key, maybe the new HPOP didn't have a woodruff key on it?
An HPOP rebuilder would know ...


Good old friction that is assisted by 95ft/lbs of torque on the HPOP gear/shaft bolt. Nothing more...



_
 
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  #102  
Old 05-11-2017, 06:41 PM
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There was no keyway on mine. I thought it strange for such a vital component. I seem to recall either Diesel O-rings or Riff Raff having instructions that said as long as the engine turns over, the bolt is torqued down enough. I didn't use a torque wrench on mine. I also don't quite understand how anyone would ever manage to reassemble it such that the gears weren't meshing, or weren't meshing properly.
 
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  #103  
Old 05-11-2017, 07:01 PM
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Originally Posted by andym View Post
There was no keyway on mine. I thought it strange for such a vital component.

In many applications where timing isn't critical, key ways have been done away with. They're not that great at transferring torque by themselves and they add unnecessarily to manufacturing cost. Plus if the joint is spun and they key is mangled or sheared it will really ruin your day.
 
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  #104  
Old 05-11-2017, 07:05 PM
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Just imagine dropping that woodruff key during assembly or disassembly.
 
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  #105  
Old 05-11-2017, 07:33 PM
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