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Old 02-13-2020, 08:05 AM   #21
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Originally Posted by JodyandRenee View Post
Wouldnt it be easier to find another bus or a parts supplier and get another third member that has the lower gears already installed?
I think that's what I said...


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Originally Posted by JodyandRenee View Post
Then its literally plug and play.
Have you ever done it without powertools in a field...?

Lightbulbs are "plug and play".

A third member for a bus is ~350lbs... That's a big lightbulb...
Draining the hubs and diff, being able to pull the axles out to free up the third member for removal w/out damaging the hub seals, being able to properly reinstall the above; usually you have to jack up one side of the axle to get oil to flow into the hubs...

All totally doable for the experienced DIY but I don't consider any of it "plug n' play"
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Old 02-13-2020, 08:38 AM   #22
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Quote:
Originally Posted by banman View Post
I think that's what I said...




Have you ever done it without powertools in a field...?

Lightbulbs are "plug and play".

A third member for a bus is ~350lbs... That's a big lightbulb...
Draining the hubs and diff, being able to pull the axles out to free up the third member for removal w/out damaging the hub seals, being able to properly reinstall the above; usually you have to jack up one side of the axle to get oil to flow into the hubs...

All totally doable for the experienced DIY but I don't consider any of it "plug n' play"
Your right David....plug and play for me is what you described above. Way easier than actually having to reset the gearset and get the tolerances right. For removal and installation I would use a motorcycle jack...they lift straight up and can easily handle the weight.
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Old 02-13-2020, 08:44 AM   #23
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Originally Posted by JodyandRenee View Post
Your right David....plug and play for me is what you described above. Way easier than actually having to reset the gearset and get the tolerances right. For removal and installation I would use a motorcycle jack...they lift straight up and can easily handle the weight.
No one ever spoke of putting new gears in the existing third member; only of replacing the third member.
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Old 02-13-2020, 10:03 AM   #24
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Originally Posted by banman View Post
No one ever spoke of putting new gears in the existing third member; only of replacing the third member.
IDK, family circus stated

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Originally Posted by FamilyCircus View Post
Ive got a ring and pinion gear set that are 3.91 Ive been trying to sell for ever. this requires installation.
That, to me, reads that they have the gear set, and not a third member.

I'm with you though, I wouldn't recommend to anyone to simply buy the gears. Go with a complete third member that way it's nothing more then nuts/bolts and some heavy lifting.

Most people aren't capable of torquing the pinion nut to the 800-1000 ftlbs that it's required to be torqued to. Let alone have the knowledge/experience to set a the gears up with the correct contact pattern for a long life. Those that are capable, probably won't be on here asking for advice about doing it.
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Old 02-13-2020, 11:30 AM   #25
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Originally Posted by sportyrick View Post
There should be a tag on your 3rd member and a tag on the front left side of the housing, those are the numbers you want to re-gear a third member, specifically the third member numbers.
No tags, but I did find 161018R3 embossed on the third member.

If I've done my math right using 60 mph, 10R22.5 tires with an overall diameter of 40.5", 6th gear ratio of .65, and 2050 rpm then my gear ratio is about 6.33

Based on Musicgensis's description of his performance, it sounds very similar to mine in 5th so I probably did my math right.
Quote:
They are not that bad to pull but weigh about 350# so it's no job for a weakling.
I've done one at work in an F-550, that was no small feat. It didn't just fall out either, we had to pry at it for a good while.
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Old 02-13-2020, 11:41 AM   #26
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Quote:
Originally Posted by Booyah45828 View Post
IDK, family circus stated



That, to me, reads that they have the gear set, and not a third member.

I'm with you though, I wouldn't recommend to anyone to simply buy the gears. Go with a complete third member that way it's nothing more then nuts/bolts and some heavy lifting.

Most people aren't capable of torquing the pinion nut to the 800-1000 ftlbs that it's required to be torqued to. Let alone have the knowledge/experience to set a the gears up with the correct contact pattern for a long life. Those that are capable, probably won't be on here asking for advice about doing it.
Family Circus is NOT the op -- just somebody trying to sell a part...
A tangent to the actual thread if you will...
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