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October 15, 2025 Service bulletin

MCI noticed that some customers operating in severe duty environments were experiencing the exterior...

Mci technical service bulletin TSIB 25-08 for 2024-2026 Mci J4500, 2024 Mci D4500 and 2024 Mci D4505 and others.

Bulletin number
TSIB 25-08
Component
Steering
Summary
MCI noticed that some customers operating in severe duty environments were experiencing the exterior U-Joints of the lower steering shaft binding due to corrosion. Because of this, MCI has developed a new re-greaseable U-Joint service kit (NF PN: 6505981) to replace the existing greased for life U-Joint on lower steering shafts. Rework instruction and preventive maintenance guide are provided below. Following this procedure and preventive maintenance will increase the life of MCI lower steering shafts.

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