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  1. E

    Big problems - my shaking was a broken crankshaft!

    UPDATE: Ok, it's been about 300-350 miles since the repair. Yes, I drive this truck a lot. Still smooth. I paint marked the bolt in relation to the washer, the washer in relation to the pulley and the bolt in relation to the pulley, using a large "X" with all lines pointing to the four...
  2. E

    What have you done to your HMMWV today/lately

    New Rapco paint, inside and out, new stainless hardware on all lights, windshield, mirrors, grill, etc., all new decals, new tail lights, reflectors, side markers, new doors, new windshields and seals, new interior wood, refinished the mesh grills, bumper, and all mesh with semi-gloss black, new...
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    Big problems - my shaking was a broken crankshaft!

    UPDATE: Ok, I reassembled everything and WHAT A DIFFERENCE. SMOOTH AS SILK. FASTER, MUCH MORE RESPONSIVE. The truck runs like a new truck. I did some research and the poster above was right, this was very common in the 6.2 GM civilian trucks. According to GM, the problem lies within the...
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    Big problems - my shaking was a broken crankshaft!

    I'm sorry I completely missed your post. Any leads or help would be appreciated!
  5. E

    Big problems - my shaking was a broken crankshaft!

    Again, I agree your approach is the right one, should I want to keep the engine. I checked all day yesterday with machine shops and welders, even showing them your post to see if they can do the work. All denied. I even went to the neighboring towns and nobody will touch it without removing...
  6. E

    Big problems - my shaking was a broken crankshaft!

    So, here's my plan: I'm picking up the new engine this week - a low mileage 6.5 with all the accessories already on it. I'm going to order all of the maintenance items on this "new" engine - new belt, hoses, balancer, glow plugs, PCV, various sensors, and maybe a water pump and fan clutch. I...
  7. E

    Big problems - my shaking was a broken crankshaft!

    But drilling a dowel would require also carving a channel to accept the dowel in the balancer and I'm just not skilled enough for that. I do agree that your suggestion would work, however. I also plan on loading it up with Loctite when I install the balancer, hopefully to make it more...
  8. E

    Big problems - my shaking was a broken crankshaft!

    So, I attempted a repair with JB Weld hi-temp steel paste. This is only to get me out of the garage and into a qualified shop for the engine swap. I am still installing the new OEM balancer, pulley, and new crank bolt.
  9. E

    Big problems - my shaking was a broken crankshaft!

    I agree it's an easy swap, but in Florida (the sunny place for shady people) I'm getting $10,000 labor quotes and that's if I supply the engine.
  10. E

    Big problems - my shaking was a broken crankshaft!

    So I started a new thread to illuminate the importance of checking "shake" in Humvees. This was my first so I assumed it was normal. I removed my crank pulley and harmonic balancer this weekend, which by the way was a beeotch. Once removed I noticed the key channel was intact only toward the...
  11. E

    6.2 or 6.5 - What's really better?

    I'll know tuesday or so, whether or not I buy it. I notified someone on the forum that I'll let them know if I don't as he wants it. I'm happy with my engine, however it's not in the "prettiest" condition. I'm nearly done doing a light resto on the truck and it pretty much looks new now and...
  12. E

    6.2 or 6.5 - What's really better?

    Ok, it's confirmed that I have the 6.2 in my 1994 Humvee. I understand the campaign that existed to upgrade the in-service 6.2s to 6.5s and 1994 was the last year to require it. Mine was never done. From what I understand there is a small increase in HP and torque and it is a "smoother"...
  13. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    Yup, I checked that. Looks good. The slight lateral movement of the crank pulley I think is a dead giveaway in this case. Let's hope it's solved!
  14. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    Thanks everybody for your guidance. I just ordered the dampener, the pulley and the crankcase seal. All OEM. This in addition to all new belts should show an improvement. Also an input seal for one of my front hubs - starting to weap.
  15. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    It's the pulley at the crank. It's definitely wobbly, and the noise sounds like it's coming from there. Also, I revved the engine up a bit to 1K rpm and BOY DOES IT SHAKE! Sounds like the hamonic balancer? If this is indeed where the issue is, what are all the parts that I should replace...
  16. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    Also, I looked at all the pulleys while running today and all of them are smooth, except for the main pulley at the crank - the one with 4 belts at the bottom. It seems to wobble very, very slightly. May be an optical illusion but it's noticeable. Do these fail and when they do, will they...
  17. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    Thank you for the reply! I have the older 6.2, so I have V belts, not a serpentine. I'm going to investigate further this afternoon. I'm wondering if anyone knows if the harmonic balancer or any bearings next to the crank are known to fail. It seems to me I'd hear "something" if I gave it...
  18. E

    6.2 Motor Chirp - may be pulley bearing or vibration squeak

    My HMMWV is nearly restored and fully sorted. Enjoying it every day. However, I've now run into another bug: There is now a low RPM chirp coming from the engine area. It chirps at every revolution, so I do not think it's a belt (belts rotate slower due to size so I've seen most belt chirps...
  19. E

    Starter Motor Bolts - Which Ones?

    Ok my new HMMWV broke down on Friday. The starter bolts went snaparoo, leaving the threaded studs in the block. A quick drill out and replacement was easy. HOWEVER: There are numerous threads and surplus e-tailers selling "updated" bolts. The bolts in the descriptions do not match what read...
  20. E

    New M998 Owner - White-Blue Smoke

    OK, quick update on the blue smoke thing. I replaced the cold advance valve (mentioned above) and now the PCV. After driving for a day, the smoke was gone! No more startup smoke. However, just after I told everyone I knew about the fix, the smoke came back last night. Cold start, and there...
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