Overview
| MLIT filing number | 1133370 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | April 3, 2014 |
| Manufacturer(s) | Isuzu, Mazda |
| Component | Differential |
| Production period | November 28, 2013 — December 10, 2013 |
| Vehicles affected | 18 units |
Defect
In the differential assembly of these trucks, the carburizing treatment applied to the side gears during the manufacturing process was improperly performed, resulting in insufficient hardness on affected units. Continued operation causes gear tooth fracture accompanied by abnormal noise. In the worst case, all gear teeth may fracture, rendering the vehicle inoperable.
Corrective action
On all vehicles, the differential assembly will be replaced with a unit containing properly manufactured gears.
Affected models & chassis ranges
This filing lists 4 type code(s). A vehicle is affected if its chassis number falls within one of the ranges below.
| Type code (型式) | Model | Chassis ranges |
|---|---|---|
| TDG-NPS85AN | Elf | NPS85-7002321 — NPS85-7002326 |
| TDG-NPS85AR | Elf | NPS85-7002321 — NPS85-7002326 |
| TKG-LHR85A | タイタン | LHR85-7004379 |
| TKG-NHR85A | Elf | NHR85-7013593 — NHR85-7013665 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
トラックの差動装置において、サイドギヤの製造工程における浸炭処理が不適切なため、硬度が低下しているものがある。そのため、そのまま使用を続けると、当該ギヤの歯が折損して異音が発生し、最悪の場合、全歯が折損し走行不能に至るおそれがある。
改善措置
全車両、良品のギヤを組み込んだ差動装置に交換する。
Source & verification
This entry reproduces public data from Japan's MLIT recall registry. English text is jdmvin.com's own translation; always verify against the official source:
https://renrakuda.mlit.go.jp/renrakuda/ris-detail-car.html?class=recalldatacar&id=3003245
Related
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