STEMCO Standard Grit Guard Seal Installation guide

Brand: STEMCO

Model: Standard Grit Guard Seal

Type: Installation guide

STEMCO - USA 300 Industrial Drive – Longview, TX 75602 • (903) 758-9981 • 1-800-527-8492 • FAX: 1-800-874-4297

STEMCO - Canada 5775 McLaughlin Road – Mississauga, ON L5R 3P7 • (905) 206-9700 • 877-232-9111 • FAX: 877-244-4555

STEMCO is a registered trademark of STEMCO Products, Inc. © 2019 STEMCO Products, Inc. • Printed in the USA

www.stemco.com

Making the Roadways Safer ®

an EnPro Industries company

Standard / Grit Guard

®

Seal Installation

STEP 1. Remove all burrs from the hub bore and spindle. Clean and

inspect the spindle, threads, and seal shoulder. These areas are to

be free of debris, rust, weld splatter, and loose particles or build

up of any type. Thoroughly clean the entire wheel cavity. Apply

a thin layer of No. 2 sealant to the O.D. of the spindle shoulder.

Place the axle ring on the spindle.

STEP 2. Using the recommended STEMCO Axle Tool, drive the axle ring on

until the tool bottoms against the spindle shoulder. Make certain

the axle ring is ﬂush with the shoulder. Wipe away any excess

sealant. (See FIGURE A)

STEP 3. Orient the hub such that the inner bearing cup is up, pre-lube the

inner bearing and place it into the bearing cup. (See FIGURE B)

NOTE: When using grease, pre-pack the inner bearing before

placement into the hub.

STEP 4. Apply a thin layer of No. 2 sealant to the OD of the seal and

position the seal in the hub. Using the recommended STEMCO

Universal Hub Tool, held in a vertical position, drive the seal

into the seal bore until it is bottomed out. Check the clearance

between the bearing cone and seal (at least 1/32nd is required).

(See FIGURE C)

STEP 5. With the wheel mounted on a dolly, carefully align the bore with

the spindle. Gently push the wheel assembly on to the spindle

to the proper position. Pre-lube the outer bearing and push it

into the bearing cup. Hand tighten the axle nut to hold the outer

bearing in place before removing the wheel dolly. (See FIGURE D)

NOTE: When using grease, pre-pack the outer bearing before

placement into the hub. Follow TMC RP631B guideline for

proper hub ﬁll.

STEP 6. Install the axle fastener per the manufacturer’s recommendations

and TMC requirements for proper installation and endplay.

(See FIGURE E)

STEP 7. Steer and Trailer Axles: Install the hub cap with a new gasket

and ﬁll the cavity with lubricant to the proper level.

Drive Axles: Install drive axle using a new gasket. Be sure the

differential oil is high enough (see manufacturer’s recommendation)

to ensure oil ﬂow through the axle to the hub. It is recommended

to jack one side up and then the other to start lubricant ﬂow.

All applications: Make sure the breather plug is clear.

Recheck ﬁll level (steer and trailer applications).

A

B

C

WHEEL END

D

E

1

STEMCO Standard Grit Guard Seal Installation guide

Brand: STEMCO

Model: Standard Grit Guard Seal

Type: Installation guide

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