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Timing Cover Removal

Discussion in 'Early CJ5 and CJ6 Tech' started by FinoCJ, Sep 4, 2020.

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  1. Sep 4, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    Is there any reason I should remove the water pump separately before removing the timing cover, or can I remove and install timing cover with water pump left on?

    thanks
     
    FinoCJ, Sep 4, 2020
    #1
  2. Sep 4, 2020
    Ohiowrangler

    Ohiowrangler Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Newark, Ohio
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    I usually leave the water pump on, Ron
     
    Ohiowrangler, Sep 4, 2020
    #2
    FinoCJ likes this.
  3. Sep 4, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    thanks - may not matter as I may not pull the timing cover just yet....forgot that also means pulling the harmonic balancer etc (at least I think it does)....I don't know if I am leaking oil from the front main crank seal (assume there is one), or from around the timing cover gasket, or only from the oil pump gasket against the timing cover (where I know I have a stripped blind hole. Starting to think its more than just the oil pump, but I think I can access it enough now to try drilling out and retapping in place....I guess if I screw it up, I can always pull it them and replace with the spare....There is a bit more to replacing than I initially thought, so will have to think about it a bit.
     
    FinoCJ, Sep 4, 2020
    #3
  4. Sep 4, 2020
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    if your going to pull the cover . pulling oil pan makes life easier . just saying
     
    Twin2, Sep 4, 2020
    #4
  5. Sep 4, 2020
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
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    FYI... A few(?) of the water pump bolts go all the way the through and double as cover bolts.
     
    ITLKSEZ, Sep 4, 2020
    #5
  6. Sep 4, 2020
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
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    That’s what I was thinking .
     
    Buildflycrash, Sep 4, 2020
    #6
  7. Sep 4, 2020
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    X2
     
    Fireball, Sep 4, 2020
    #7
  8. Sep 4, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    How hard is it to change a front main seal?
     
    FinoCJ, Sep 4, 2020
    #8
  9. Sep 4, 2020
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

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    Easiest one you’ll ever change.
     
    Buildflycrash, Sep 4, 2020
    #9
  10. Sep 4, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    its behind the crank pulley/harmonic balancer - but I don't need to pull the timing cover? Maybe I can do both the front crank seal and re-tap the timing cover in place...
     
    FinoCJ, Sep 4, 2020
    #10
  11. Sep 5, 2020
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    It's a easier to change the seal if you pull the cover. The crankshaft shout won't be in the way. If you have the coolant drained, it's easy to pull the cover. You'll likely need to drain coolant/pull the radiator to get a puller on the crank pulley anyway. It does mean resetting your timing.

    You might try it in-place first and pull the cover if it doesn't work out.
     
    Fireball, Sep 5, 2020
    #11
  12. Sep 5, 2020
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

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    I thought that’s what the heck you were doin’. :confused:
     
    Buildflycrash, Sep 5, 2020
    #12
  13. Sep 5, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    I don't know WTF I am doing....It is leaking oil out of the oil pump, but I also think its leaking from somewhere else more central on the engine - whereas the oil pump is over on the passenger side. Not sure if its leaking from around the timing cover gasket or from behind the crank dampener at the front crank seal....If I don't have to pull the timing cover, I would rather not....
     
    FinoCJ, Sep 5, 2020
    #13
  14. Sep 5, 2020
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

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    Welcome to the club. Go ahead and do it. It’s not hard. Just have to take apart the whole front of you jeep. Lots of work But not hard.
     
    Buildflycrash, Sep 5, 2020
    #14
  15. Sep 5, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    So here is the FSM pic (fig D1-38)....the seal would be the combination of 18 & 19: Oil shedder and Crankshaft packing. I would guess 'packing' is like a rope seal? And I would guess when it was rebuilt something more like a neoprene seal was used in place?
    [​IMG]

    I have been hesitating pulling the whole thing, but maybe I should just give in and do it....
     
    FinoCJ, Sep 5, 2020
    #15
  16. Sep 5, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    Well, the radiator and grill are off (from the front frame horn repair), the oil and coolant are drained, the fan, alternator, coil, and oil pump is off - what is left? Looks like I have to pull the crank pulley and dampener (and the distributor of course), oil pan....for some reason I thought the dampener could be a PITA? maybe it comes right off?
     
    FinoCJ, Sep 5, 2020
    #16
  17. Sep 5, 2020
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    if you don't have it . harmonic damper puller
    rent it from your FLAPS . usually a deposit is required . but refunded when you return tool
     
    Twin2, Sep 5, 2020
    #17
  18. Sep 5, 2020
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Steering wheel puller will probably work too. (with the right bolts)
     
    Fireball, Sep 5, 2020
    #18
  19. Sep 5, 2020
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    Just pull it while your there - check the timing gear all at the same time. It's really not that hard, just intimidating. You read the instructions well enough - I just feel my way through it now since I don't remember the instructions and get the book out in the end anyhow...
     
    Warloch, Sep 5, 2020
    #19
  20. Sep 5, 2020
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Maryland
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    There's a new version 1 piece neoprene seal for the front. While it's off r&r the oil pump, check the clearances, add a thrust plate if necessary. Oil pump gears / components are cheap.
     
    Rich M., Sep 5, 2020
    #20
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