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Question/help Re. Initial Start Up F134

Discussion in 'Early CJ5 and CJ6 Tech' started by baldjosh, Sep 14, 2019.

  1. Sep 14, 2019
    baldjosh

    baldjosh Sponsor Sponsor

    pacific north west
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    I hope to turn the key for the first time after a complete engine rebuild tomorrow...:sick:I feel kind of sick with worry.
    Question: The Cam drives the oil pump and distributor... If I pull the Dist. and prime the pump all I need to do is slide the dist. back in so the key on the end of the shaft fits into the groove of the pump...no need to worry about the groove/keys position in regard to timing???
    My brain says yes...but my worry wart wont stop thinking about it...how can the pump be turned if its locked into the cam by the gears???
    I have noted the pump's groove position in case its necessary to refit the dist. in the exact same spot...but that leaves a lot of room for error

    Sorry, I'm freaking out :worry:
     
  2. Sep 14, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    It can't.
     
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  3. Sep 14, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    No need to pull the distributor back out either.
     
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  4. Sep 14, 2019
    baldjosh

    baldjosh Sponsor Sponsor

    pacific north west
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    HELP
    one pulls the distributor to prime the pump...it will prime the pump:lol:
    how in the frank do you prime the oil pump then...I keep reading about pulling the disto and spinning the oil pump...???
     
  5. Sep 14, 2019
    baldjosh

    baldjosh Sponsor Sponsor

    pacific north west
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    Im just gonna start it up...worst case scenario it grenades itself... f this cockamamie s… is that a word...if it is …is it allowed on this forum...:rofl:
    sorry, tired and loopy
    thanks for giving a crap Glenn..Gonna.let her rip in the AM
     
  6. Sep 14, 2019
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
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    The Fhead/Lhead oil pump is gear driven from the cam. You cannot spin the oil pump like on GM style engines. The distributor is also keyed to go in the oil pump gear in only one orientation as well... The PO on my Head many years ago filed the distributor to go in either way....

    Pull the coil plug wire and crank it over until your oil pressure gauge registers some pressure. Don't burn up your starter doing it though.
     
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  7. Sep 14, 2019
    47v6

    47v6 junk wrecker! Sponsor

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    BTW, don't freak out. Its going to be ok. I built my Fhead in my living room 24 years ago.
     
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  8. Sep 14, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Assuming you used assembly lube on all bearings and such?
     
  9. Sep 14, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    I like to use a manual oil pressure gauge, at least for startup. Like 47V6 says pull the coil wire and crank it over till you see pressure.
     
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  10. Sep 15, 2019
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

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    I would go one step further . pull all spark plugs . that way engine will spin faster
     
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  11. Sep 15, 2019
    baldjosh

    baldjosh Sponsor Sponsor

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    Sorry about the freak out...lots of life stress to boot...THANKS for the replies. I will do as recommended, yes assembly lube was used....well I hope it was, I paid a pretty penny for a well respected mechanic to assemble this thing. and yes...I installed a manual oil pressure gauge...gonna take a chill pill and cool my jets etc
    Thanks again!
    really not sure where I get my info from sometimes:D
     
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  12. Sep 15, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    I had a heck of a time building oil pressure after a rebuild :(

    Spun that puppy over without the plugs for I don't know how long- nothing.

    Pumped oil into the galleries- nothing.

    I finally took the pump off & packed it full of vaseline- that worked.
     
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  13. Sep 15, 2019
    47v6

    47v6 junk wrecker! Sponsor

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    Must pack the oil pump with vasoline!!! Read the service manual about all this too. The instructions will tell you what you need to know.
     
  14. Sep 15, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    I won't say it shouldn't be done, but I've gotten oil pressure in 3 different engines without having to pack the pumps.
     
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  15. Sep 15, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    Any secrets for this?
     
  16. Sep 15, 2019
    47v6

    47v6 junk wrecker! Sponsor

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    It takes a couple minutes to not wonder why there's no oil pressure. I have gotten many oil pumps to prime with no vasoline, but some didnt and I had to pull it.
     
  17. Sep 15, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    No, I didn't do anything special. Maybe I got lucky and didn't know it at the time. :shrug:
     
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  18. Sep 16, 2019
    baldjosh

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    Pump worked great, pressure came up to @ 45 50 psi before I stopped watching it...and saw the gusher of oil spewing from the canister filter:censored:
    had to shut it down...was purring like a kitten after the initial shudders and shakes...CRAP! Going to talk to the machinist this morning...this sucks!!!
    :hellokitty:
     
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  19. Sep 16, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Love good news!
     
  20. Sep 16, 2019
    baldjosh

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    not so sure how "good" the news is...the plan was to run and drive it for 20 minutes to harden the cam and etc...now im afraid the assembly lube has washed off and a restart will damage things...
    I will ask the machinist in 3 hours or so...fingers crossed he says it wont be all that bad
     

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