Hendrickson Leaf Spring Assembly Inspection

m2 mm 32.01.013
  1. Inspect the spring hangers for wear of the spring pin holes, cams, and the spring hanger legs. See Fig..

    • Minimum gap of 3/8 inch (9.5 mm).

    1. Forward (no. 1) Spring Hanger

    2. Spring Eye Pin

    3. Rear (no. 2) Spring Hanger

    4. Rear (no. 3) Extension

    Fig. 1, Unloaded RTE Spring Suspension

  2. If equipped with the RTE series, the gap between the rear (no. 2) spring hanger and the top spring leaf should measure at least 3/8 inch (9.5 mm) in an unloaded condition.

    If the measurement is less than 3/8 inch (9.5 mm), install new rear (no. 3) extension hangers. Lubricate the bolt threads with SAE 20 oil. Tighten the 1/2–13 locknuts with hardened washers 85 lbf·ft (115 N·m).

  3. Inspect the spring leaves for cracks, gouges, wear, or abnormal bends. The main (no. 1) and wrapper spring leaves (no. 2)—the top two spring leaves—may be individually replaced. If equipped with the RTE series suspension, the first, second, and third spring leaves (the top three spring leaves) may be individually replaced. If a spring leaf is damaged below these numbers in a pack, replace the spring assembly. In addition, replace both spring assemblies to ensure even spring deflection.
Note:
Parent topic: Suspension Inspecting
Document Number: 0000120266
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-11-06