Parts arrived on Wednesday, so I took Thursday off to get the Jeep back on the road:
I thought all my gears were Yukons (I know the rears are, but Six States may have just used whatever D30 stuff they had on the shelf). The pinions look different, the left one is the Yukon and it has a larger contact tooth:
The passenger side of the carrier has an attachment (may have something to do with the varilock) on it that didn't allow me to use the bearing puller the way I wanted to without destroying it...so we cut the bearings off with a grinder, then sliced into the inner race, and used an air hammer around the lip of the inner race to get it off of the carrier. Long process, but it worked:
We put it together to see the pattern and left all shims as they were before. BTW, the pinion was a beast to tighten. I had a pipe wrench on the yoke and against the LCA while tightening it with a 24 inch breaker bar. We got really lucky, the pattern looks great. I am no gear pro, and was lucky to have the help of my bro. He is my go to mechanic when something is beyond my skills.
It feels better on the highway than it did before. I also replaced the diff side u-joint in the front driveline, and rotated the tires. My highway test last night and this morning were both great, now to get some miles on this and see how it starts wearing. I'll check the pattern again in 500 miles when I change the fluid again.
Your pinion is a little deep judging by the pattern. Looks like good backlash.
Probably not a huge deal, just what it looks like to me. Glad its all back together.
I've seen quite a few people set up their pinions fairly deep, heard it's good for gear longevity when playing on the rocks.. keeps the gear contact OK even under slight housing flex/ R&P deflection. Dunno for sure though, that's just an internet rumor
Truss and a heavy duty diff cover are a damn good idea on any D30 (and D44a) that gets used off road on bigger meat.
Your pinion is a little deep judging by the pattern.
Thanks for the input...on my next set of axles, I plan on having more time to work on things. I would love to have the axle on the bench and really have time to learn how to do this properly. For now, it is close enough and feels good on the highway.
Originally Posted by 780406jeeper
Thats the coast side of the gear. What does the pattern look like on the drive side?
The opposite side of the gear looks about the same. However, this is actually the drive side if I understand correctly (Dana 30 Low Pinion). Hence the reason that D30 HP are stronger as it actually drives on the drive side. I don't know why the LP was ever used, they should have used a HP in all vehicles for better strength.
Man talk about having my head up my you know what,
When I looked at that pict, I just thought it was the rear 44A. You are absolutely correct for the front, and I agree, no idea why jeep ever used the lp 30, even in the xj I was always told that the tj needed to be lp for clearance issues, and that the hp 30s ran out before the xjs were done. For the wj, doesn't seem like a clearance issue but who knows.
Your jeep looks sick btw and was the inspiration for mine. I am the guy that 801DubJay ran into out here in AZ. I guess he knows you...
'78 Cherokee Chief: 360/TH400/NOS QT, '04 Grand Cherokee: 4.7/545RFE/242HD w/SYE, JK Rubi front axle, 4.56 gears, Protofab rear bumper/tire carrier
Thanks. Yeah, Matt thought it was fun to run into another Dubber down in AZ. He is way cool to wheel with, you'll have to join us on one of our Moab trips if you can. I have also heard there are some areas of AZ that we need to check out though too (near Sedona). My wife's aunt and uncle just build a home in Gilbert. We were planning a trip around the four corners, NM, AZ but our plans changed and we had to cancel. I am glad it didn't work out though, the trip would have been for last week and this week. The heat has been crazy.
Where abouts in Gilbert? Great town to live in. The wheeling out here is awesome. Rocks and more Rocks. I would love to wheel with you guys some day.
I am not sure, can't find their address right now and I haven't visited there yet. If you ever plan on coming to Moab, make sure to post in the UT section. I will do the same if we can get our SW exploration tour back on track
Last week I finally ordered new window scraper seals for the Jeep. They were getting really bad, and it was time. Here are some pics of the worst one, it was rusting from the inside out and bulging away from the body.
This view shows how much it was starting to push away from the door because of the internal rust and swelling:
There was an incredible amount of rust that was falling out during the removal of the old ones. All 4 took about 10 minutes to remove and install.