No: Please proceed to step 7.

For X15 powered LT, the rear engine
mount should be replaced with
1664729C7 regardless if damage is
found.

Step/Action

Decision

7 |DIAGNOSTIC: Power Steering System.

Determine if the power steering system has the correct fluid type (refer to
1KO500058), it is full of fluid, free of aeration and operating properly.

Any issue found?

Yes: LT/RH refer to 0000885380
Prostar/LoneStar refer to 0000863170

Correct the power steering system and
proceed to step 8.

No: Please proceed to step 8.

Step

Action

Decision

|DIAGNOSTIC: Steering System Lash

With the engine off and the truck sitting on it tires, inspect for free play in the steering
Wheel. It should not exceed 2 inches of movement on an 18inch steering wheel with
no movement in the tires.

Inspect the steering shaft slip joint and u-joints for looseness.

With a TRW gear: Verify steering gear lash per the TRW service manual.

|RH Sheppard gears are not adjustable and should not be tampered with.

Yes: Replace any loose components and
adjust the TRW steering gear lash as
needed per the TRW service manual,
then proceed to step 9.

No: Please proceed to step 9.

8
STEERING LASH
Was anything found loose?
Step/Action |Decision
9 |DIAGNOSTIC: King Pin Vertical and Horizontal play Hendrickson:

Measure the king pin for excessive vertical horizontal end play.

Confirm the type of axle installed and use a dial indicator to verify acceptable play
per supplier's specifications.

Meritor: MM-2
Dana: AXSM-0038
Hendrickson: 17730-252

Is King pin play out of specification?

Yes: Install high friction composite kingpin
service kit H60961628 per Hendrickson
manual 59310-011.

No: Install the high friction composite
kingpin bearing only kit H60961629. If the
service kit is not available, install the
steering stabilizer H60961167 can be
installed in its place per the below
resolution.

Proceed to step 10

Dana:

Yes: Install a king pin service kit and the
high friction composite king pin kit
2520702C9.

No: Install the high friction composite king
pin kit 2520702C91. If the service kit is
not available, install the steering stabilizer
H60961167 can be installed in its place
per the below resolution.

Proceed to step 10

Meritor 12K:

Yes: Install high friction composite kingpin
service kit 2519548C91 per TP1873.

No: Install the high friction composite
kingpin bearing only kit 2520213C91. If
the service kit is not available, install the
steering stabilizer H60961167 can be

installed in its place per the below
resolution.

Proceed to step 10
Meritor 13/14K:

Yes: Install high friction composite kingpin
service kit 2519476C91 per TP1873.

No: Install the high friction composite
kingpin bearing only kit 2520212C91. If
the service kit is not available, the
steering stabilizer H60961167 can be
installed in its place per the below
resolution.

Proceed to step 10

Step/Action Decision

DIAGNOSTIC: Once the high friction composite bearing is installed, andthe __|Yes: Install the steering stabilizer
rear engine mounts installed on X15 only, re-evaluate for a shimmy/wobble. H60961167 following the instructions
below.

Vehicle must be driven and re-evaluated with the high friction composite
bearing and rear engine mounts installed

No: Repairs are completed

10

|ls the shimmy/wobble still present with the high friction bearing and rear
engine mounts installed?

Do NOT proceed to installing a steering stabilizer unless the vehicle has been re-tested with the high
friction bearing (all engines) and rear engine mount (X15 only) installed. The high friction bearing, and
rear engine mount will correct nearly all vehicles with this complaint

STEERING STABILIZER

Vehicle must be driven and re-evaluated with the high friction composite bearing and rear engine mounts installed, prior to installing a
steering stabilizer.

Steering Stabilizer Installation Procedure:

Only if directed, install the steering stabilizer per the below procedure. Vehicle must be driven and re-evaluated with the high friction composite bearing
and rear engine mounts installed, prior to installing a steering stabilizer.

Park vehicle on a hard, flat surface, turn the engine off, set the parking brake, and block
the wheels to prevent the vehicle from moving in either direction. Failure to do so may
result in property damage, personal injury, and / or death.

If the vehicle must be raised, do not work under the vehicle supported only by jacks.
Jacks can slip or fall over, potentially resulting in property damage, personal injury, and /
or death.

fase wear Safe eye protection when performing vehicle maintenance. Failure to do so

may result in personal injury and / or death.

The steering stabilizer kit is designed to fit 1.75inch tie rod tubes. If the tie rod tube is 1.9 inches you will need

to source 2 inch u-bolts locally for the kit and modify the tie rod tube mounting bracket accordingly.

Some Meritor and Dana axle configurations may require the mounting bracket (axle side) to be modified to
bend slightly upward to clear the tie rod at full turn, and a longer axle U bolt installed (12 inch obtain locally).

1. Ensure the vehicle has been driven and re-evaluated with the high friction composite bearing and rear engine mounts installed, prior to installing a
steering stabilizer.
© Steering stabilizer should not be installed unless re-evaluation is complete
© Steering stabilizer should not be installed proactively
2. Shift transmission to Park or Neutral, set parking brake, and install wheel chocks.
3. Remove the front U-bolt from the passenger side steer spring and discard.
4. On the tie rod assembly, measure the distance between the right and left grease zerks.

5. Divide your measurement from step 4 by two. (This will help locate the centerline of the tie rod assembly)

6. Mark the centerline of the tie rod assembly per figure 1 & 2.

Figure 1: Tie rod assembly
I I
||Item 1: Tie rod assembly centerline |

LEFT GREASEZERK, fo GREASEZERK

ORWER S8IDe PASSENGER SIDE
LEFT — RIGHT

eg ROD CENTERLINE

Figure 2: Steering Stabilizer to Axle Center Line

7. From the tire rod assembly centerline, make a second mark 5 7/8in towards the driver's side per figure 3. This will be the mounting location of the
tie rod mounting plate.

Figure 3: Tie rod assembly

Item 1: Tie rod assembly centerline (first mark)
Item 2: 5 7/8 from tie rod assembly centerline (second mark)

8. Follow the supplier instructions to attach the hardware for the stabilizer. Hendrickson steering stabilizer assembly instructions 59310-053.

When installing the U-bolts on the tie rod tube do NOT use an impact, or damage to the tie rob tube is
possible.

9. Ensure proper clearance between the tie rod tube and the shock mount at the U-bolt per figure 4. If required modify the mounting bracket to
provide the needed clearance.

10. Before returning the truck to service, the steering system MUST be tested through its full range of travel. Any binding or contact at any point must
be repaired before releasing the vehicle.

[The Steering system must be inspected and tested for full range of travel to confirm there
any point in the full range of travel must be repaired.

is no binding or contact after the stabilizer has been installed. Any binding or contact at |

Modify bracket upward

for additional clearance

Figure 4: Tie rod tube to mount clearance

4 » i i ai
La ih wa om

Figure 5: Assembled Steering Stabilizer

WARRANTY INFORMATION

Warranty Claim Coding:

Refer to the Warranty Coding Manual for Group and Noun Codes.

Standard Repair Time(s):

Refer to the SRT Manual for Repair Times

OTHER RESOURCES

Master Service Information Site

Hendrickson Steering Stabilizer Assembly Instructions 59310-053
Hendrickson Softek, Steertek, Airtek Service Manual 17730-252
Hendrickson Kingpin Bushing Service 59310-011

Hendrickson Parts Catalog SP-182

TRW Service Literature

Meritor Technical Bulletin TP-1873

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