ZF IFS Lubrication

rv mm 32.04
Important: Do not raise the vehicle by placing a jack under the control arm(s). The weight of the vehicle could damage the control arms and cause alignment issues. See Fig. for correct jack placement.
  1. Chock the rear tires and apply the parking brake. Raise the front of the vehicle with a jack so the tires just clear the ground and the suspension is fully extended. Place safety stands under the vehicle frame.

    2. Warning: Never work around or under a vehicle that is supported only by a jack. Always support the vehicle with safety stands. Jacks can slip, causing the vehicle to fall, which could result in serious injury or death.

    Important: ZF recommends checking the wheel bearing lash and adjusting as needed every 50,000 miles (80 450 km).

  2. Remove the wheel hub. See of the Recreational Workshop Manual for wheel bearing service procedures, or take the vehicle to an authorized Freightliner dealer.
  3. Lubricate the steering knuckle/control arm at indicated maintenance intervals. Use only an NLGI Grade 2 lithium-based grease, multipurpose grease, or mineral oil on the lubricating points. See Fig. and Fig. .

    Fig. 1, ZF IFS Jack Placement

    1. Steering Knuckle Bearing Grease Fitting (upper)

    2. Steering Knuckle

    3. Steering Knuckle Bearing Grease Fitting (lower)

    Fig. 2, Pressure Grease Fitting Positions, RL-75E

    1. Steering Knuckle Bearing Grease Fitting (upper)

    2. Control Arm Grease Fitting (upper)

    3. Control Arm Grease Fitting (lower)

    4. Steering Knuckle Bearing Grease Fitting (lower)

    Fig. 3, Pressure Grease Fitting Positions, RL-75EM

Note:
Parent topic: Suspension
Document Number: 0000121646
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-11-13