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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: Tommyd11730 on January 29, 2017, 10:31:16 pm

Title: Outer Spindle Nut torque
Post by: Tommyd11730 on January 29, 2017, 10:31:16 pm

Guys
Converted my 84 K2500 to Manual Warn hubs.  I have always tightened my outer spindle nut with a big bar and just laid into it.  So for giggles I did it the same way but I measured it...

144lbs.

dang, I never thought about it before.  I see so many threads with guys sending them home to "only" 80lbs.  Got me to wondering, aside from shearing the ears off my socket,(or pulling threads on the spindle) is their any harm sending it down that tight?

Thanks

Title: Re: Outer Spindle Nut torque
Post by: Irish_Alley on February 08, 2017, 10:10:16 am

252 (inside nut)
251 (ring)
250 (outside nut)

Adjust
• Raise the vehicle and support it with safety stands.
1. Remove the locking hub assembly (249), lock nut
250), and the ring (251).
Tighten
• Adjusting nut (252) to 60 N m (50 ft. lbs.)
while rotating the hub/rotor in order to seat
the bearings.
2. Back off the adjusting nut (252) and retighten.
£ Tighten
• For Automatic Hubs, torque the adjusting nut
to 47 N m (35 ft. lbs.) while rotating the wheel.
• For Manual Hubs, torque the adjusting nut to
60 N m (50 ft. lbs.) while rotating the wheel.
3. Back off the adjusting nut (252).
• For Automatic hubs, back off 3/s of a turn
maximum.
• For Manual hubs, back off enough to free the
bearing.
4. Ring (251) and lock nut (252).
• Tang on the inside diameter of the ring must
pass onto the slot on the spindle (265).
• The hole in the ring must align with the pin on
the lock nut (250). Move the adjustment nut (252)
to align the pin.
Tighten
• Lock nut (250) to 217 N m (160 ft. lbs.)
minimum.
Measure
Endplay in the hub/rotor assembly. It should be set
between 0.025 to 0.254 mm (0.001 to 0.010-inch).
5. Locking hub assembly (249).
• Refer to FRONT AXLE (SEC. 4C).
6. Lower the vehicle to the ground

Title: Re: Outer Spindle Nut torque
Post by: ehjorten on February 08, 2017, 01:32:31 pm

He said outer nut and you quoted 160 lb-ft for the torque on the outer nut.  He said he measured 144 lb-ft.  Not sure how that is 3x over.

Title: Re: Outer Spindle Nut torque
Post by: Irish_Alley on February 08, 2017, 01:39:56 pm

Ehj youre completely right, i dont know why but i was reading it as both were 50 lbs. ive taken that bad info out.

Title: Re: Outer Spindle Nut torque
Post by: Irish_Alley on February 08, 2017, 01:41:18 pm

http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_87_1987_Chevrolet_Light_Duty_Truck_Service_Manual.pdf#page=343