Holland FWS1

4700 mm 31.01.003
  1. Disconnect the tractor from the trailer. For instructions, see the Western Star Driver's Manual.
  2. Thoroughly steam clean the fifth wheel.
  3. Check the fifth wheel plate for cracks. Check for sharp edges on top; the chamfer should be 1/8 to 1/4 inch (3 to 6 mm).
  4. When the wheel is locked, the safety latch must swing free and fall freely into position. See Fig..

    1. Lubricant Grooves

    2. Safety Latch

    3. Release Handle

    4. Mount

    Fig. 1,  Holland FWS1 Fifth Wheel

  5. The lever bar and release handle must be in proper alignment. See Fig.. Compare the lever bar and release handle alignment to a new, or a properly operating lever bar and release handle. Replace any bent or misaligned lever bar or release handle.

    1. Release Handle

    2. Lever Bar

    Fig. 2,  Lever Bar and Release Handle Alignment

  6. Check all cotter pins for cracking or damage. Replace any cotter pin that shows any signs of damage.
  7. Check all mounting bolts for signs of fatigue, and tighten them to the proper torque. For torque specifications, see . Inspect all angles, plates, and brackets for cracks or other damage.
  8. Replace cracked, worn, or damaged parts with new parts. Replace all loose mounting bolts with 5/8–11 SAE grade 8 bolts, grade C locknuts, and hardened washers. Do not re-use bolts, nuts, and washers on fifth wheel mountings.
  9. After inspecting the fifth wheel, lubricate all moving parts with a chassis or multipurpose grease. See MOP 31–02 for lubrication instructions.
Note:
Parent topic: Fifth Wheel Inspection
Document Number: 0000120678
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-10-31