partsflyin
Adventurer
Chris, getting ready to change fluid in my differentials. Do you use synthetic when building these axles ?
Thanks
Thanks
UJOR Build Thread
- Thread starter ujoint
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CaptainBuilt
Well-known member
Not sure how accurate it is, but I was told by East Coast Gear Supply:
New gear sets MUST be broken in correctly to prevent damage. Not following proper break-in procedures will lead to overloading and overheating the ring and pinion as well as breaking down and ruining the gear oil. Not following proper break-in procedures can be determined during inspection and will void the warranty. Please follow the below guidelines to ensure a proper break-in and long life of your gears. • Only use high quality gear oils. ECGS recommends Lucas non-synthetic 85W-140 • On initial run, drive lightly for 15 to 20 minutes then stop to allow differential to cool completely for 20 to 25 minutes. • Avoid towing and heavy acceleration, as well as vary speeds every 5 to 10 minutes while driving on highways. • Drive conservatively and do not drive more than 50 miles at a time without allowing a cool cycle during the first 500 miles following installation. • After completing initial break-in, change gear oil at 500 miles. Small metal particles are normal and gear oil will typically be black. Excessive metal in gear oil should be reviewed by a competent differential mechanic to ensure safety of internal parts. Post gear oil change and initial break-in: Towing. • First time towing should be limited to light load for no more than 15 miles, then allow differential to cool completely for 20 to 25 minutes. • Repeat this procedure for first 45 miles of towing for full break-in of gears for towing vehicles. PREMATURE OVERLOADING AND IMPROPER BREAK-IN WILL CAUSE GEAR OIL BREAKDOWN AND MAY RESULT IN RING AND PINION FAILURE VOIDING THE GEAR WARRANTY!
ujoint
Supporting Sponsor
We don't. We use a standard 80W90 gear oil.
CaptainBuilt
Well-known member
All that rain sucks. I hope the beer made it better.
ujoint
Supporting Sponsor
Sitting tall! We're working on a new 4R75 tail housing to avoid transmission mods along with a 5.4/4R75 specific fuel tank to simplify the conversion process so it will be a few weeks before this rig is mobilized. F bumper will be bolted up later today and we'll get it outside for a good cleaning and a roof rack.
stevelx450
New member
That looks awesome Chris !Sitting tall! We're working on a new 4R75 tail housing to avoid transmission mods along with a 5.4/4R75 specific fuel tank to simplify the conversion process so it will be a few weeks before this rig is mobilized. F bumper will be bolted up later today and we'll get it outside for a good cleaning and a roof rack.
Are those 6” springs and what size are the tires ?
ujoint
Supporting Sponsor
ujoint
Supporting Sponsor
KMC XD137! They do look good!
stevelx450
New member
Hi Chris, can you measure from the bottom of the rear bumper to the the ground , the max in missouri is 30” ?
Thanks , Steve
ujoint
Supporting Sponsor
This one needs to settle before I do that but my van (V7) is 27". We have a few rigs in MO with our conversion & no issues.