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Shakedown Run @ Rausch Creek!

5/8/2022

 
We made it back alive!  It started raining sometime Thursday night, and didnt stop until very early this morning.  It turned yesterday's Rausch Creek trip into the wettest muddiest trip ive ever been on there!
We were joined by Ox in the mogster, and Joe with his beast of a 7.3 PSD powered bronco, both on 43s:
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Despite the abysmal weather and it raining non-stop the whole day, we ran a pretty decent amount of miles, close to 10 if im not mistaken.  Honestly did not get a ton of pics as it was pouring all day long, and we really didnt stop very much at all.
We took the typical pathway into the East side, taking B to C to O.  We detoured and ran CV trail while we were there
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I absolutely walloped the driver rock rail!  It took quite a hit, but it did its job well, the rocker & door remain unscathed
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From there we went down and ran Topless for Tatas, and then made our way via B/E over to the west side, where we went down J, across 11 and then into Rock Creek we went!
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Here we stopped for a soggy lunch break
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...and then further into the creek we went
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Finally at the other end we decided to keep going and run Death Trap, which was completely under water
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Out the other end we picked up 19 and took it up to 11.  At this point Joe's transmission was overheating so we escorted him back out 11 to H and up to Tower Road, were the front pump seal gave out and he started puking (extremely burnt) ATF.  so his copilot stayed behind with the truck, and we brought him back to the parking lot to get his truck & trailer since it was clear the bronco wasnt going to make it back on its own at this point.
After all that me & Ox went back out into the park and went down into the South side to run Cemetary, Boot Hill & Tomb Stone
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From ther we went further in yet and ran down S1-4 over to Snake Bite and Camel Back, which is probably the tightest trail you could run a full bodied rig down!  That one was a snug fit for my wide rig, but we made it thru w/o and body damage thankfully.  However, we did manage to get a log up underneath the body, where it smashed my gas filler neck!
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crumpled the steel neck, tore the rubber hose and popped it off the gas tank entirely, so im pretty sure my tank is full of water & mud now.  From here we headed back to the parking lot and called it a day!

So, first impressions are that the bronco did really good on its shakedown run.  I have some minor issues with the engine tune that i have to correct before the next trail ride, and of course im going to have to drop my gas tank to clean it, and replace that filler neck! 
The trepadors appeared to work very well; it was a rainy slippery muddy mess and they seemed to hook well, and the tread pattern stayed nice and clean despite how muddy the trails were.  Sidewalls are stiffer than the iroks and the tires seem to work better on a heavy rig as a result.  Very curious to see how well they hook on dry rock!

Tomorrow is the big day!

5/6/2022

 
Tomorrow is the big day, the shakedown run at Rausch Creek!  Technically we will have the smallest rig there, so it should be a good time!
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trans temps: solved

4/28/2022

 
Now that spring is here and its getting warm outside, it became apparent that the trans cooler i installed just isnt going to cut it.
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Not exactly small by any means.  This is actually the largest cooler Ford ever put in these old trucks.  I use one for the E4OD in the green '96 bronco, but its not quite up to the task that this truck is demanding.
So i did some digging around online, and found this beast:
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It is a monster of a cooler, and consumes most of the real estate behind the grill:
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...it does fit in there pretty good though:
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This thing is a beast.  Immediately knocked 30º off of my trans temps compared to the other cooler i was running.  So this is going to do the job nicely.

upgrades

4/9/2022

 
After finding this, i decided that it wasnt worth a failure on the trail, and ordered some better shafts
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Seems the Yukon shafts arent up to the task, so i ordered a set from Moser Engineering:
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In the interest of strength, Moser does not machine their shafts for spindle clearance, instead they have this nice smooth transition.  So i will have to verify that they clear the spindle , and if not, modify the spindle so they do.  Odds are that since its a D70, they will clear just fine. 
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We'll get some paint on these things, and get em installed later this week!

Dana 70: installed

4/2/2022

 
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New r&p installed. Apparently the ring side carrier bearing had spun on the carrier, and the new bearing would slip right on!  Fortunately, we were able to find a local who had a two-piece D70 carrier so we ran over, picked that up, and got it all done and back together.

I forgot to buy gear oil. Also still need to reinstall the drive shaft & anti-wrap bar. Im also in the process of replumbing the OBA since i routed it a bit too close to the passenger header and blew the line during the cam break-in.  At this point, its just the rainy spring weather slowing me down.
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oil leak: fixed

3/29/2022

 
Fixing the dreaded dipstick o-ring leak on the 7.3 powerstroke
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As you can see, its a slimy mess up there.
I got lucky, mine didnt just leak, the o-ring straight up left town, and it started hemorrhaging oil.  It was a pretty big leak, no mistaking that one!  So since i prefer to upgrade rather than simply replace, i opted for Strictly Diesel's Dipstick Adapter Repair Kit.
This thing is a pretty nicely machined:
So lets get this done.
Remove this bolt, and then yank the dipstick out of the existing adapter in the pan
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Starter has to come out, theres no way youre doing it installed.  Here you can see the dipstick up and out of harms way
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Next up is to spin the nut off.  This part is important!  Grab the stem with something.  I used needle nose vice grips, but anything will suffice.  A pair of channel locks will remove the nut.  Most likely, its loose anyway.
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With the nut off, let the adapter slide into the pan a bit, and then reach in with some form of pick, hook the o-ring and dig it out thru the hole.  Not as bad to do as it sounds
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Here's what time has done to mine:  swollen to well above its original size.  You can see the deformation where it has actually worked its way out of the adapter.  No wonder the leak was so bad!
This is typical, and its why tightening the nut down more rarely fixes the leak.
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So, the new adapter uses 2 orings to seal against the outside of the pan, so no more issues with oil swelling the orings.  Of course youll need to clean the outside of the pan, but odds are its clean metal (aside from some oil grime) since it was leaking anyway.  Also of note is the bracket that slips into the hole in the pan- the one bolt has a small weld on the end so it cant be threaded out.  So youll slip this thru the hole in the pan, and then rotate that screw which will in turn rotate the sandwich plate until it lines up with the hole in the adapter 
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See those two little notches?  one is to set the clocking for an OBS 7.3, the other for a SD 7.3.  In my case its a 90, so i want the dipstick to point up; the SD motors have it tilted slightly forward.

I wish i could say theres more to it, but really there isnt.  Once youve removed the oring you simply drop the old adapter into the pan.  Its big enough itll settle to the bottom and stay there forever.  Unless you roll it over, anyway!  At some point in time (next year?) im planning on having the cab off, so ill yank the pan then and extract it.  Anyways, slip the new adapter into the hole in the pan, rotate, and install screws!  Its honestly pretty easy to do.
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The kit comes with a new OEM gasket for the dipstick tube.  Technically it is not an o-ring, its this fancy shape thats supposed to seal better
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Oil it up a bit, slip it on, and the reinstall the tube!  Install the starter and youre done!
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It is a tight fit; maybe 1/4" clearance to starter at most.  But, it clears and it works!  No more leaks!
I did the whole job in about 90 minutes, truck on the ground still on its tires, while stopping to take pics.  I suspect it could be done in an hour, so easily something that can be tackled after work one day.

D70 disassembly continues

3/24/2022

 
Got the carrier opened up, nice and clean inside
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​Found lots of metal in the oil passages for the pinion gears, took a while to wash it all out. Tomorrow i think im going to replumb the brakes on the axle since i last did that back in '05 and the lines are a bit mangled from getting caught up in weeds, sticks, branches etc offroad over the years.

D70 is out

3/22/2022

 
Rear driveshaft and anti-wrap bar removed:
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...and the rear is now out:
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drive side shaft (yukon 35 spline chromo) is twisted a little:
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With the carrier out you can see the carnage:
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With the pinion removed you can see the carnage:
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Hopefully tomorrow ill get the detroit disassembled and cleaned, and then its just a matter of waiting until next week when it gets rebuilt!
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When it rains it pours

3/18/2022

 
I think i found the source of the fuel leak on the diesel:
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The base snapped off the fuel pump when i removed it.  Im thinking it was cracked already and leaking fuel into the valley.  Obviously i was able to extract the broken portion fairly easily.  I didnt get a chance to do much of a test drive though, as the oil dipstick oring in the pan let go, and the motor just hemorrhages oil when its running.  So i have a repair kit in the mail, should be here  in about a week.   

oh no

3/17/2022

 
Well that was short-lived...
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Apparently Dana 70s do break.
The pinion got loose, ran deep in the ring gear, and self destructed.  So it looks like its getting a rebuild. 

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