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Old 04-14-2021, 01:51 PM   #1
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Lug nut torque

I'm putting new front tires on my Mountain Master Chassis. Is 450 pounds the correct torque?
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Old 04-14-2021, 02:06 PM   #2
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I don't have my chart with me. Call Spartan with the last 6#s of your vin.
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Old 04-14-2021, 02:50 PM   #3
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Hi Becks..what size socket did you used on your lug nuts..I'm trying to find that out to keep one on board..I see old post say 33mm & bought one but it doesn't fit snug on the lut..1 1/4" SAE too small this shouldn't be this hard.
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Old 04-14-2021, 07:05 PM   #4
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My 01 dutch star with the same chassis is 450-500 lb-ft on the lug nuts (I had a wheel off tonight and had to look it up). The lug nuts are 33 mm or 1-5/16" (which is easier to find).
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Old 04-14-2021, 07:09 PM   #5
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1999 Freightliner chassis 22.5" wheels, 450 ftlbs. on the lug nuts; re-torque in 50 miles and again in 200 , then drive .

B-in-L's , 05 , W-22 was the same .
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Old 04-14-2021, 07:23 PM   #6
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Thanks guys, I thought it was 450 just wanted to be sure.
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Old 04-15-2021, 02:43 PM   #7
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Becks, 450 is listed for my MM lug nuts.

I'm interested in seeing a photo of the apparatus you use to tighten them!
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Old 04-16-2021, 05:58 AM   #8
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Becks, 450 is listed for my MM lug nuts.

I'm interested in seeing a photo of the apparatus you use to tighten them!

4' long, 3/4" drive breaker bar and a long piece of pipe to loosen. 4' long, 3/4" drive torque wrench to tighten. Big toys, big tools.

The wheel/tire assembly weighs a ton so its a real PITA to remount back on the coach. I have to use a floor jack and a helper to get it back on the coach. I know the commercial tire guys have the technique to do it pretty easily by themselves. Next time I call one into work I'm going to pay more attention and see how they do it.
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Old 04-16-2021, 09:27 AM   #9
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4' long, 3/4" drive breaker bar and a long piece of pipe to loosen. 4' long, 3/4" drive torque wrench to tighten. Big toys, big tools.

The wheel/tire assembly weighs a ton so its a real PITA to remount back on the coach. I have to use a floor jack and a helper to get it back on the coach. I know the commercial tire guys have the technique to do it pretty easily by themselves. Next time I call one into work I'm going to pay more attention and see how they do it.
Guess I'm going to have to invest in a "manly" torque wrench. I tried a multiplier but it didn't work very well.

I have found that mounting goes a lot easier since I made a plywood dolly with swivel wheels that I set the tire on when mounting. Then all I have to do is raise the axle to the proper height and align the holes with the studs. Eliminates the lifting part of the equation!
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Old 04-16-2021, 01:18 PM   #10
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On the old MH I put a floor jack under the axle to fine tune the axle height. Those tires were "only" 70 lbs.

The new MH uses 22" tires. I have to pull the wheel hub cover and rotate it to install valve extenders (already has the tabs to secure the extenders, just in the wrong spot). Without the extenders it's darn impossible to check / add air. The problem is buying yet another torque wrench. I have a 4' 3/4 cheater bar, but I like setting to the right torque (Roadmaster, 500 lbs). Even the electronic adapters are $150. Ideas?

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Old 04-16-2021, 09:25 PM   #11
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Quote:
Originally Posted by John_Penzi View Post
4' long, 3/4" drive breaker bar and a long piece of pipe to loosen. 4' long, 3/4" drive torque wrench to tighten. Big toys, big tools.

The wheel/tire assembly weighs a ton so its a real PITA to remount back on the coach. I have to use a floor jack and a helper to get it back on the coach. I know the commercial tire guys have the technique to do it pretty easily by themselves. Next time I call one into work I'm going to pay more attention and see how they do it.
Truck tire lift
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Old 04-17-2021, 05:19 AM   #12
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The commercial tire guys that have done my big trucks at work just muscle them up with bars/lumber for leverage (that didn't work for me).

I like that lift but if I have to do this so often I need that tool, somebody please just shoot me. Maybe I'll go back to travel trailers and the relatively mini 15"s.

I do like that it has those rollers for tire rotation. The first time I did it, when I finally got the wheel back on the studs I realized I had misaligned the holes in the wheel (I have steel wheels with covers) and had blocked access to the inner tire valve stem. I had to pull it off and clock it to the correct position, and then fight to get up mounted again. I got smarter the other side and only had to do it once.
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Old 04-17-2021, 05:23 AM   #13
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The problem is buying yet another torque wrench. I have a 4' 3/4 cheater bar, but I like setting to the right torque (Roadmaster, 500 lbs). Even the electronic adapters are $150. Ideas?

I did a quick search and there were a few under $200. I don't think you'll find them for less than that (and those of course aren't the highest quality but will do for what we are doing).

I'm fortunate that I have stuff this big at work and just borrow it.
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Old 04-17-2021, 06:03 AM   #14
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I've removed all of my tires/wheels using that "Truck Tire Lift" (bought for $30 back when we got our first Diesel Pusher) It is the thing to use! Even my then 13 year old granddaughter was able to roll the tire into place and mount it once! (I was showing her the principle of what Archimedes said "Give me a lever large enough and I will move the earth")

Even at my septuagenarian age, I can use these tools to remove and remount those 22.5 inch 150+ pound wheels. The torque multiplier is calibrated and I use a standard 150 lb torque wrench with it.
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