STEMCO US Facilities will be closed December 8, 2023 for our Physical Inventory. Shipping will cease at 2 pm CST on December 7, 2023.

Wheel Bearing Adjustment Procedure

Proper wheel bearing adjustment is critical to the performance of wheel seals and other related wheel end products. For that reason, we are proud to be a part of TMC’s Wheel End Task Force. We are happy to bring these standards to you in the form of this technical guide. Working together, in this way, STEMCO helps keep your rigs rolling.

The following seven step bearing adjustment recommendation was developed by TMC’s Wheel End Task Force. It represents the combined input of manufacturers of wheel end components. We will be referencing the following STEMCO PDF:

Wheel Bearing Adjustment

STEP 1

Bearing Lubrication

Lubricate the wheel bearing with clean lubricant of the same type used in the axle sump or hub assembly.

STEP 2

Initial Adjusting

Nut Torque: Tighten the adjusting nut to a torque of 200 ft-lbs. while rotating the wheel.

STEP 3

Initial Back-Off

Back the adjusting nut off one full turn.

STEP 4

Re-Torque Adjustment

Re-Torque adjusting nut to 50 ft-lbs while rotating the wheel.

STEP 5

Final Back-Off

See Chart A

STEP 6

Jam Nut Torque
See Chart B

STEP 7

Acceptable End Play

Refer to Page 21 of the STEMCO catalog for measuring and play

Bearing Adjustment Procedure for Single Castellated Nut

STEP 1

Torque the Castellated Nut to 200 ft-lbs.

STEP 2

Back the nut off 1/2 to 1 full turn and rotate wheel assembly.

STEP 3

Re-torque Castellated Nut to 75 ft-lbs while wheel assembly is rotated.

STEP 4

Lock Castellated Nut in place with a new cotter pin through one of the two holes drilled in the axle. If at 75 ft-lbs you are not on a hole, back the nut off to the closest hole and lock in place with the cotter pin.

STEP 5

Due to Castellated Nut configuration, variation in bearing adjustment can be significant.

STEP 6

Always check end play after final adjustment and lock down.

To access our full library of Tech Tips, click here.

For in-depth articles covering industry news and trends, product spotlights, case studies, customer insights, and “thought leadership” topics from STEMCO professionals, visit The Wheelhouse Blog.

It appears you are offline - this application will store visited pages for offline viewing.

;
Congratulations!

You finished Part 1 of the TQM Wheel End Training course. To continue to the Part 2 TQM Wheel End videos, please click one of the TAKE COURSE buttons below.

To rewatch the Part 1 TQM Wheel End Video, close this pop-up by clicking the X in the top right corner.

To return to the home screen and select another video, click BACK TO STEMCO UNIVERSITY.

Has Prerequisite
A man applying grit guard to a wheel end

TQM Wheel End Part 2 – Grit Guard® Installation

Requires TQM Wheel End Training Part 1

Has Prerequisite
A man installing a Guardian HP Wheel Seal

TQM Wheel End Part 2 – Guardian® HP Installation

Requires TQM Wheel End Training Part 1

Has Prerequisite
a man in front of an unassembled wheel bearing

TQM Wheel End Part 2 – Discover®/Voyager® Installation

Requires TQM Wheel End Training Part 1