Mike's front 8" high pinion Harrop install for his 97 TLC |
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(61 BIG pics loading) |
NOV 25 2017 |
This just arrived from the Ebay seller. Apparently, this 3rd came out of a 96. |
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I'm trying to cut open the dual boxes....and Cola has to see what's happening.. |
Nice double boxing with good padding inside the box. |
This 3rd will be easy to clean up. |
This #9334 Harrop elocker will be installed. |
The 410 gears visually appeared aok.....but the pre-paint check tells us if the gears were wearing "out of place" which would means noisy gears. This is the drive side and I'm very pleased with this pattern. |
Coast and looks wonderful. These gears can go another 500,000 miles if the 85W-140 gear oil is kept clean ;) Mike-If you're reading this... switch the inner axle seals to the MarlinCrawler "eco" version.... It will keep the gear oil on this side and the grease on the other side. |
Backlash check.....measuring in spec. |
So the original open carrier was discarded and the 410 ring/elocker are now checked for any burrs or ridges. All was great. |
Ring gear is tapped down with the help of the lead filled plastic hammer. Sometimes, patience really is the key. |
The last 50ml bottle of blue Loctite lasted 6 months on the bench.....upgrading now to the Bigboy 250ml and see if it will last 2.5 years. |
70+ ft/lb per the fsm. |
The new carrier bearings are tapped on. Anybody guess at what Jet Li movie that is? One hint.....collar. |
This portion is complete. |
Now on to the pinion end of things. |
New koyo inner bearing will be used with the original .047" pinion shim. |
The 12ton Harborfreight press is perfect for gear installs. Never in 16 years have I needed anything else. On sale at Harborfreight for $99 right at this moment. |
The empty 3rd is cleaned up and now the outer race can go in. |
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It was a good tight fit in the bore. |
The larger inner race takes more patience. |
But once it is started evenly then it will go smoothly after that. |
100% seated....no stress points from using a soft chisel either. |
All 3 items are ready. Put the pinion in and tighten the nut just enough to offer some resistance. |
Mount the Harrop elocker....I have a little bit of interference with the stop tab. |
Adjust the stop-tabs a little. |
It's not the full 2mm of freeplay but good enough for the paint check. |
A little bit of bearing pre-load and a backlash adjustment..... |
And it's no surprise that the drive side looks about the same as it did with the old bearings. |
Coast......Nice. |
To increase the freeplay, I will smooth the edges and probably hit the sides of the bearing cap with a file. |
Same with the other side. |
Might as well drill the .453" hole |
Mark the approximate spot with a big sharpie.... |
The hole is drilled. |
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Crush sleeve time now. |
Marlin seal is one of the best guarantees against leaks. |
The original flange has been wire brushed, cleaned, and sanded with #1500 extra-fine paper. A light coating of gear oil has also been applied. |
A nice, smooth 11 of pinion preload has been accurately measured. |
DING!! |
Slide the bearing cap in horizontally....then thread the 2 bolts. |
Threads for the adjusting wheel are perfectly lined up so now the cap bolts can be tightened properly. |
Bingo....the adjuster wheel threads very nicely into the bearing cap. |
I have my 2mm of freeplay now I note. |
Verifying the 4 bolts are all torqued to 70 ft/lb. |
Plenty of preload on the carrier bearings(8 in/lb) and the backlash is "spot on"(.0055" minimum). |
Ring gear is inscribed. |
Now to check the elocker operation. |
Ohms measured at 3.8. |
Then 12 volts is applied..... |
....to the 2 wires in the lower right and the order does not make any difference....they have no polarity. Ring gear is then turned and the 3 steel pins get pushed into the case. |
Then release the 12 volts and the steel pins pop out instantly. |
The hi-pinion elocker really takes nicely to a coat of black. |
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A snapshot of the notes. |
Packing the 3rd with the harness. |
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Here it comes, Mike. |