Re: 69 GMC "Ol' Blue"
Yep did that before, had a hard time on my buddy's truck getting the last piece out. Then we changed his to 1 ton diff's too. Darn 38.5" Boggers.
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Re: 69 GMC "Ol' Blue"
Hey man I'm passing you up!!! on the axles anyway. I just finished totally rebuilding my '82 10b for the front of my '69. Hopefully yours isn't as bad as mine. I spent over $300 at the parts house on new all new spindle bearings/seals and u-joints.
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Re: 69 GMC "Ol' Blue"
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Re: 69 GMC "Ol' Blue"
yes, and the pinion and carrier bearings. all that came in a kit with mine. That was an additional $50 to the $300 i spent on the spindle bearings, But I had to change out the gear ratio so it was an easy decision for me. My axle now has all new parts except for the ball joints. I'll probably regret that later, but I want to get it on the road and then I'll take it to the alignment shop and see exactly what it needs.
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Re: 69 GMC "Ol' Blue"
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Re: 69 GMC "Ol' Blue"
I installed new gears so yes I had to set up the backlash and gear pattern again. If You are just installing a pinion seal you can probably go buy some gear marking compound (or just use grease) and check the pattern before you pull anything loose. Then pull the pinion nut off and change the pinion seal. then put the nut back on and tighten it down and double check the pattern. As long as you don't crush the crush sleeve any more than it already is you should be fine and the pattern shouldn't change. And as long as you don't take the carrier out the backlash shouldn't change.
if the pattern does change you should pull the carrier out and MAKE SURE you keep the shims in order because they handle the backlash. and then get yourself an in-lb torque wrench and a new crush sleeve and set the pinion preload back to specs. I'm not 100% sure what that spec is though. I think mine is set around 15 in-lb. EDIT: I should make it clear that the crush sleeve controls pinion bearing preload and it is very important that the pinion bearings dont' have any slack in them. The marking compound may not give you a good indication of this. The best way is to pull the carrier out and reset the bearing preload with a new crush sleeve and a in-lb torque wrench. BUT! this is a front axle and it does not move with the hubs unlocked. It really does not see near the mileage that a rear axle will see. you are probably fine with the method above. |
Re: 69 GMC "Ol' Blue"
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Re: 69 GMC "Ol' Blue"
here are two very helpful links for working on a GM 8.5" front diff.
http://67-72chevytrucks.com/vboard/s...=536415&page=2 http://truckmodcentral.com/forums/f1...l-setup-11732/ |
Re: 69 GMC "Ol' Blue"
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Well, it was an awesome day yesterday! I finally got the Extreme Chassis Black laid down! I still have to flip the frame and get the bottom, but I'm really pleased with how it turned out!
All scuffed up and ready to lay down Attachment 1124671 Attachment 1124672 Attachment 1124673 Attachment 1124674 |
Re: 69 GMC "Ol' Blue"
looking good !
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Re: 69 GMC "Ol' Blue"
Nice work!!!
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Re: 69 GMC "Ol' Blue"
That frame is lookin good!! Mine is going to have to settle for rattlecan rustoleum semi-gloss black and no frame flip lol.
How is your front axle coming along?? Also I just noticed on your passenger side front shackle hanger you have that same piece of plate welded across one shackle. I thought that wasn't factory and I cut it out because it wouldn't work with my 73-87 lift springs and now I see it on yours. I wonder what they needed that for. |
Re: 69 GMC "Ol' Blue"
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I moved the front axle out of the way so I could paint. Does that count? :lol: I just pulled the trigger on seals, ball joints, U Joints, "new" left axle assembly and the Mile Marker hubs you suggested. Hopefully the parts will start showing up so I have something to do on it this weekend. |
Re: 69 GMC "Ol' Blue"
Gotta love a freshly painted frame. Why, I don't know, but they look sure look cool. Mine is Rust-O-Leum, too. Sprayed it on with a gun, but still Rust-O-Leum.
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Re: 69 GMC "Ol' Blue"
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Nothing wrong with Rust-O-Leum. I chose the Extreme Chassis Black for a bit more durability (I hope ;)) |
Re: 69 GMC "Ol' Blue"
Frame is looking really nice Mike. That is one of those really satisfying accomplishments that motivates you to keep moving because that part of the build looks so good!
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Re: 69 GMC "Ol' Blue"
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So having the frame painted has given me a boost of motivation. I've spent the last few days ordering parts, and cleaning up the front axle. I still need to clean out the axle tubes, but I should have the underside of the frame and axles painted and ready to rock this weekend :metal:
Here's some pics for my documentation purposes. Here's what started this whole mess Attachment 1125799 Axle seals must have been leaking a little because the inside of the axle tubes were caked with an oily gritty mess! I'm really happy I decided to rip this down now. It would have been a biotch to do this when the truck is done...and I'm 90 :lol: Attachment 1125800 Attachment 1125801 |
Re: 69 GMC "Ol' Blue"
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New parts started showing up!!!
Attachment 1126501 Attachment 1126502 BIG a$$ box for one item :lol: Attachment 1126503 |
Re: 69 GMC "Ol' Blue"
looks like a complimentary fridge magnet in the box so that's 2 items!
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Re: 69 GMC "Ol' Blue"
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Yesterday I endured the 105 degree temperature and got some more paint down. Today I'm going to finish the paint on the front end, and if I have time, I'll try and finish the frame and cross members. Attachment 1126942 Attachment 1126943 |
Re: 69 GMC "Ol' Blue"
Yea we got up to 106 yesterday too, but you were apparently a lot more ambitious than I was. Those parts look really good!
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Re: 69 GMC "Ol' Blue"
Bet the paint drys really fast in that heat.
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Re: 69 GMC "Ol' Blue"
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I am proud to announce that I'm officially done with painting the frame and front end! Attachment 1127318 Attachment 1127319 Attachment 1127320 |
Re: 69 GMC "Ol' Blue"
Looking good Mike, can't wait to see it start to come together, nice to start with parts all painted and clean.
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Re: 69 GMC "Ol' Blue"
Looks good Mike!
Don't u luv how overspray goes everywhere? I got Chevrolet Orange overspray all over the front end of Black 68 GMC when painting a motor for another project... :thud: Make sure you pull that pretty truck of yours out into the street while doing this. :banghead: |
Re: 69 GMC "Ol' Blue"
Looks good! Hey, once you start putting it back together, you can always fan yourself off with the exhaust from the air ratchet...:lol:
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Yeah, I actually pull the new truck over into the neighbor's driveway two houses down. :lol: Quote:
Well there's an idea :lol: Quote:
Last night I tried to press out the old ball joints so I could install the new ones and ripped my vice right off my bench. I guess I don't know my own strength :lol: or it wasn't installed correctly. I'm going with my strength story! |
Re: 69 GMC "Ol' Blue"
Nice work! It's looking really good!
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Re: 69 GMC "Ol' Blue"
Thanks Ryan!
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I tried to remove the ball joints today....nooooooo good!!!! I guess I'm going to have to take them to a shop and have them pressed out.
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Re: 69 GMC "Ol' Blue"
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Ok...SMALL update, but progress is progress right?
Painted the front diff cover Attachment 1130127 And got the gears back in Attachment 1130128 |
Re: 69 GMC "Ol' Blue"
As I was scanning down, I was hoping there was more progress than just painting the diff cover (not that I've not posted for even less progress...). Getting the front diff back in looks like good progress though. I have to admit, though, that seeing the front axle like that on jack stands with the frame upside down next to it kinda makes a fella feel dizzy or something. But, then again, it's late, and I was in the sun too much today...
Nice job, as usual! |
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Thanks! |
Re: 69 GMC "Ol' Blue"
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Why is it that the smallest of updates take the most time? :lol:
All I was able to accomplish was to get my u joints put in my axle shafts, and get my spindles mounted. Man that was a lot more work than I expected :lol: Attachment 1133274 Attachment 1133275 Attachment 1133276 I also got my old rotors off so I could install the new shiny ones on. Attachment 1133277 |
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