1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Is Anything Easy? Timing Chain Cover Removal?

Discussion in 'Early CJ5 and CJ6 Tech' started by Buildflycrash, Nov 27, 2018.

  1. Nov 27, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    I figured since I was doing this rebuild thing I should just replace a $40 water pump. One less thing to brake down later, right? I broke the head off one of the longer bolts on the water pump. (The 7 o’clock bolt) After removing the pump I welded a nut to the broken bolt 3x, but After several days the bolt is still stuck and new water pump is still on the bench. So removing the timing chain cover I get to where broken bolt is in the block.

    Remove water pump - remove 5 bolts holding timing cover - remove 2bolts at front of oil pan -remove timing chain cover. Well all the bolts came out easy but the cover isn’t budging.

    Maybe the cover is corroded to the long broken bolt? I put some heat to the area but I get an idea I shouldn’t heat the aluminum cover to much? Is the fuel or oil pump holding things up? Any ideas would be great.

    [​IMG]

    [​IMG]
     
  2. Nov 27, 2018
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
    Joined:
    Oct 25, 2006
    Messages:
    5,798
    Pan bolts out?
    Hit it with a rubber mallet until it loosens up from all sides.
     
  3. Nov 27, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    Yes.
    I have a rubber mallet. I’ll try that.
     
  4. Nov 27, 2018
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
    Joined:
    Oct 25, 2006
    Messages:
    5,798
    Don't go nuts, hit it firmly until it frees up. Don't break it.
     
  5. Nov 27, 2018
    Hellion

    Hellion Regurgitated

    Eastern TN
    Joined:
    Dec 25, 2016
    Messages:
    534
    Have you tired the hot candle wax trick?

     
    homersdog likes this.
  6. Nov 28, 2018
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Liberty Lake, WA
    Joined:
    Aug 13, 2015
    Messages:
    6,656
    You will want to remove the fuel pump. Not that it would necessarily prevent the cover from coming off, but without it, it may be easier to twist the cover back and forth to break the bond of the corrosion, if that's all that is holding it.
     
  7. Nov 28, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    I sure will when I can get to the base of the bolt. The cover needs to come off first, that is the current issue.
     
  8. Nov 28, 2018
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    4,170
    You did get the short bolts buried down low on either side of the crankshaft? If so, than the broken bolt is seized and heat and penetrant soaking will be the answer.
    -Donny
     
  9. Nov 28, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    I did get the 5 bolts off (plus 2 for oil pan) per the manual. I've been spraying PBBlaster on the one broken bolt for several days.
    Is heat going to damage the aluminum timing cover if I heat it harder?
     
  10. Nov 28, 2018
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    4,170
    The subject bolt looks like its just above the oil pump? Those long bolts can rust/fuse in the alloy housing holes if they are not coated with anti-seize compound. I would heat the outside rib/bulge where the bolt is stuck with a propane torch (as commonly used for copper plumbing work) several times, keeping a good penetrant oil to soak in as the metal expands and contracts from the temperature change.
    From where the break is, the bolt broke because it is stuck so tight in the timing cover. It never got a chance to twist as you were loostening it. Heat is probably what will eventually loosen it up.
    -Donny
     
  11. Nov 28, 2018
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
    Joined:
    Apr 28, 2011
    Messages:
    5,407
    I would remove the fuel pump . just because arm rides on cam shaft . and you'll need it off it install cover again
    what donny said . only use a propane torch . aluminum doesn't change colors . strike end of broken bolt with a flat punch . to shock it
    and by luck you get cover to move 3/16" . but cover is still stuck . cut bolt off at block . if you get enough room for a cut off wheel
     
  12. Nov 28, 2018
    Chilly

    Chilly Active Member

    Joined:
    Mar 12, 2007
    Messages:
    1,486
    A more radical way may be to drill a small hole through that rib and keep pitting the PB Blaster to it. It wont affect it structurally, but for sure use lots of anti-seize when reassembled and plug the drilled hole with RTV to keep water out.
     
    Buildflycrash likes this.
  13. Nov 29, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    I have a small chip and a crack. But it’s still not off. :banghead:

    [​IMG]
     
  14. Nov 29, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    Here is offensive bolt.
    Heat and hammer.
    Heat and hammer.

    Now to get that bolt out.

    [​IMG]
     
  15. Nov 29, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,559
    I’m going to start a new thread about the timing chain. Should I replace it now?
     
  16. Nov 29, 2018
    Chilly

    Chilly Active Member

    Joined:
    Mar 12, 2007
    Messages:
    1,486
    The answer is always yes.
     
New Posts