User Guide

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BULLETIN: 27029-R

TRACK BAR PIVOT ASSEMBLY DEFLECTION

DODGE RAM

2WD/4WD PICKUPS

Road Wander and Wheel Shimmy

IMPROVED DESIGN MOOG

DS1413

SOLUTION:

PROBLEM:

• High lateral loads generated by the Ram tire and wheel assemblies

loosen the track bar pivot, causing road wander and steering wheel

“shimmy”.

• OE design is susceptible to preload deflection.

Note:

Determine the condition of the track bar using the OE inspection procedure.

Track bar pivot assemblies exhibiting more than .080" of movement should be

replaced. Some technicians have reported wheel wander and road shimmy with

pivot assembly deflection below the .080" OE specification.

INSTALL DS1256 IN ALL MODELS MANUFACTURED

PRIOR TO 2/7/94.

• Larger 1.25" forged and machined ball stud provides smoother rotational

torque, greater load-carrying capability and better wear resistance.

• Powdered-metal bearings combined with the redesigned stud create an

even stronger pivot that can handle the high lateral loads generated by

the Ram wheel and tire assemblies.

• Forged from 1-3/8" micro-alloy bar stock for added strength.

• Forging process adds more material or mass to the bend, achieving

a bar diameter of 1-5/8", eliminating “flex” in the critical stress area.

• A newly designed and patented, heavy-duty domed cover plate

eliminates preload deflection.

• Premium polychloroprene boot with grease-relief valve provides a sealed,

serviceable environment.

WHEEL SHIMMY

ROAD WANDERROAD WANDER

Description Years Make/Model

Replacement

Part Number

Track Bar

1994-2002

4WD Dodge Ram R1500,

R2500, R3500

DS1413

1994-2002

2WD R3500

w/solid front axle

INCREASED MASS

AT CRITICAL STRESS AREA

LARGER BALL STUD AND

HEAVY-DUTY DOMED COVER PLATE

tech line:

1-800-325-8886

moogproblemsolver.com

www.FMe-cat.com

For parts lookup, visit

Form#

27029-R