Help! front 10-bolt wheel bearing preload torque spec? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

redz 1970 K5 · 10-05-2006, 07:40 PM

So my gears were installed yesterday, and I noticed today that the hubs were hot to the touch- I could only keep my hand on the hub for a second or two after about a 10 mile drive. They either put too much preload on the wheel bearings or did something wrong with the brakes.

I am going to take it all apart tonight, I went ahead and bought manual hubs to replace the auto hubs. I haven't bought a shop manual for this truck yet, so I was hoping someone could tell me the torque spec for the preload on the wheel bearings?!

Thanks in advance.

redz 1970 K5 · 10-06-2006, 11:42 AM

Ah well, no response so I just followed the procedure from my old blazer manual with a Dana 44... Torque bearings to 50lb/ft to set them up, back it down, retorque to 35 lb/ft while turning the rotor, and then backing the turn off 1/4 turn before installing the lock washer and torquing the outer nut to 50 lb/ft.

Truck hasn't fallen apart yet!

boxrodz · 10-09-2006, 01:50 AM

I'm not familar with 4by wheel bearings. But, the 83 shop manual instructs to torque the inner nut to 50 ft-lbs while rotating the hub. Then back off and retorque to 35 ft-lbs while the hub is rotated. Then back off the nut again 3/8 turn maximum.

Tighten the outer lock nut to 160 - 205 ft-lbs. (K10-K20: 205 ft-lbs)/(K30: 65 ft-lbs)

Maybe, someone from the 4by crowd can verify this.

redz 1970 K5 · 10-09-2006, 01:10 PM

You are totally right. Someone on CK5 verified the specs for me.

Due to my keen eye, I was able to find and fix the problem before it really became one. I am thankful for that.

Thanks!

10-05-2006, 07:40 PM	#1
redz 1970 K5 OBS guy Join Date: Jun 2004 Location: SoCal Posts: 1,060	Help! front 10-bolt wheel bearing preload torque spec? So my gears were installed yesterday, and I noticed today that the hubs were hot to the touch- I could only keep my hand on the hub for a second or two after about a 10 mile drive. They either put too much preload on the wheel bearings or did something wrong with the brakes. I am going to take it all apart tonight, I went ahead and bought manual hubs to replace the auto hubs. I haven't bought a shop manual for this truck yet, so I was hoping someone could tell me the torque spec for the preload on the wheel bearings?! Thanks in advance. __________________ 88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more

10-06-2006, 11:42 AM	#2
redz 1970 K5 OBS guy Join Date: Jun 2004 Location: SoCal Posts: 1,060	Re: Help! front 10-bolt wheel bearing preload torque spec? Ah well, no response so I just followed the procedure from my old blazer manual with a Dana 44... Torque bearings to 50lb/ft to set them up, back it down, retorque to 35 lb/ft while turning the rotor, and then backing the turn off 1/4 turn before installing the lock washer and torquing the outer nut to 50 lb/ft. Truck hasn't fallen apart yet! __________________ 88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more

10-09-2006, 01:50 AM	#3
boxrodz Until Seventy Times Seven Join Date: Feb 2005 Location: Rocky Mountain Front Range Posts: 1,301	Re: Help! front 10-bolt wheel bearing preload torque spec? I'm not familar with 4by wheel bearings. But, the 83 shop manual instructs to torque the inner nut to 50 ft-lbs while rotating the hub. Then back off and retorque to 35 ft-lbs while the hub is rotated. Then back off the nut again 3/8 turn maximum. Tighten the outer lock nut to 160 - 205 ft-lbs. (K10-K20: 205 ft-lbs)/(K30: 65 ft-lbs) Maybe, someone from the 4by crowd can verify this. __________________ boxRODz 1983 C10 SWB Fleetside When two halves is gone, there's nuthin left. Two nothings is nuthin. That's mathematics son. You can argue with me but you can't argue with figures. Two half nothings is a whole nuthin...

10-09-2006, 01:10 PM	#4
redz 1970 K5 OBS guy Join Date: Jun 2004 Location: SoCal Posts: 1,060	Re: Help! front 10-bolt wheel bearing preload torque spec? You are totally right. Someone on CK5 verified the specs for me. Due to my keen eye, I was able to find and fix the problem before it really became one. I am thankful for that. Thanks! __________________ 88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more



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