Hummer H1 (2006+). Manual — part 247

8-4

Steering System

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10. Install the drive line protection.

11. Lubricate the pitman arm and lower the vehicle.

CENTER LINK REPLACEMENT

Removal

1.

Raise and support the front of the vehicle.

2.

Remove the cotter pin and the slotted nut securing the pitman arm to the center link (Figure 8-3).

3.

Remove the cotter pin and the slotted nut securing the idler arm to the center link.

4.

Loosen, but do not remove, the bolts and locknuts securing the idler arm to the frame.

5.

Remove the two cotter pins and slotted nuts securing the right and left tie rods to the center link.

6.

Using puller J-24319-B remove the center link from both tie rods.

7.

Using puller CH-47975 remove the idler arm and the pitman arm from the center link.

Installation

NOTE: Refer to torque adapter in section 8 for proper use of tool J-45764-2.

1.

Secure the center link to the pitman arm and the idler arm with two slotted nuts and tighten to 110 - 130 lb-ft (149-176 N•m)
using torque adapter J-45764-2 and an extension (Figure 8-5).

2.

Install a cotter pin in each slotted nut. If necessary, tighten the slotted nuts to align the holes for cotter pin insertion. DO NOT
back off the slotted nuts to align the cotter pin holes.

3.

Secure the right and left tie rods to the center link with two slotted nuts and tighten to 63-77 lb-ft (85-104 N•m).

4.

Install a cotter pin in each slotted nut. If necessary, tighten the slotted nuts to align the holes for cotter pin insertion. DO NOT
back off the slotted nuts to align the cotter pin holes.

5.

Place the front wheels in the straight ahead position and tighten the idler arm to frame bolts and locknuts to 90-100 lb-ft (122-
136 N•m).

6.

Lower the vehicle.

Figure 8-3: Center Link Removal

STEERING (PITMAN) ARM

CENTER LINK

TIE ROD

IDLER ARM

TIE ROD

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Steering System 8-5

5745804

TORQUE ADAPTER

1.

Determine the effective length of the torque wrench (A) by measuring the distance from the center of the square drive to the
center of the area covered by the operator’s hand (Figure 8-4).

2.

The length of the torque adapter (B) (J–45764-2) is 4 inches.

3.

When used in the straight or180 degree position, the following formula must be used:

Specified Torque x Wrench Length (A)

Wrench Length (A) + Adapter Length (B)

Example: 260 (Specified Torque) x 18.5 (Wrench Length) ÷ by 18.5 (Wrench Length) + 4 (Adapter Length) = 213.7 lb-ft.

4.

When the adapter is used at 90 degrees to the torque wrench the specified torque will be the same as the wrench setting.

5.

Using the adapter at any other angle to the torque wrench requires the above formula with the adjusted or effective length of
the adapter (B), which will be a value between 0 and 4 inches.

Figure 8-4: Torque Adapter

Figure 8-5: Torque Adapter, Extension and Torque Wrench

TORQUE ADAPTER

EXTENSION

TORQUE WRENCH

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8-6

Steering System

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TIE ROD END REPLACEMENT

Removal

1.

Raise and support the front of the vehicle.

2.

Remove the cotter pin and slotted nut from the geared hub end or center link end of the tie rod assembly (Figures 8-6 and 8-8).

3.

Using puller J-24319-B remove the tie rod end from the geared hub, or center link.

Disassembly

1.

Loosen the locknut on the clamp securing the tie rod end to the adjusting sleeve.

NOTE: Count the number of turns required to remove the tie rod end from the adjusting sleeve.

2.

Remove the tie rod end from the adjusting sleeve.

Assembly

1.

Apply anti-seize compound to the threads in the adjusting sleeve.

2.

Thread the tie rod end into the adjusting sleeve, turning the same number of revolutions that were required for removal.

Installation

1.

Secure the tie rod to the geared hub, or center link with the washer and slotted nut. Tighten the slotted nut to 63-77 lb-ft (85-
104 N•m).

2.

Install a cotter pin in the slotted nut. If necessary, tighten the slotted nut to align the holes for cotter pin insertion. DO NOT
back off the slotted nut to align the cotter pin holes.

CAUTION: Ensure that the outboard clamp faces the halfshaft and the inboard clamp faces away from the stabilizer bar (front
only) or damage to equipment may result.

3.

Before final tightening of the sleeve clamp hardware, center both tie rod end studs in their sockets (Figure 8-7).

CAUTION: If the stud and socket are not properly aligned, a partial or complete lockout of stud swing could result. Limiting stud
swing can increase component wear and a complete lockout can cause component damage.

4.

Lubricate the tie rod ends.

6-1-05

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Steering System 8-7

5745804

Figure 8-6: Tie Rod End Removal

Figure 8-7: Tie Rod End Stud and Socket Orientation

HALFSHAFT

TIE ROD END

GEARED HUB

ADJUSTING

SLEEVE

CORRECT STUD

ORIENTATION

ALLOWS ROTATION DURING

SUSPENSION TRAVEL-NO BIND

WILL NOT ALLOW ROTATION

DURING SUSPENSION TRAVEL

STUD SWING

LOCKOUT

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