Overview
| MLIT filing number | 1138420 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | June 30, 2016 |
| Manufacturer(s) | Isuzu |
| Component | Supercharger (Turbocharger) |
| Production period | August 27, 2010 — October 21, 2011 |
| Vehicles affected | 55 units |
Defect
In the engines of large- and medium-duty buses, the weld joint between the internal arm and shaft that actuates the turbocharger variable nozzle has insufficient strength. Actuator operation twists the weld joint, causing the variable nozzle to shift out of position. This reduces intake air volume, leading to loss of engine output and unstable engine speed. In the worst case, the engine may stall during driving and be unable to restart.
Corrective action
On all vehicles, replace the turbocharger with a corrected part.
Affected models & chassis ranges
This filing lists 3 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 |
|---|---|---|
| LDG-RU8JHBJ | GALA | RU8JHB-60011 — RU8JHB-60051 |
| SDG-RR7JJCJ | Gala Mio | RR7JJC-60011 — RR7JJC-60028 |
| SDG-RU8JHBJ | GALA | RU8JHB-60011 — RU8JHB-60051 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型・中型バスの原動機において、ターボチャージャの可変ノズルを作動させるインターナルアームとシャフトの溶接部の強度が不足しているため、アクチュエータの駆動により当該溶接部がねじられ、可変ノズルの位置がずれることがある。そのため、吸入空気量が不足して、原動機の出力低下や回転が不安定となり、最悪の場合、走行中エンストし再始動できなくなるおそれがある。
改善措置
全車両、ターボチャージャを対策品に交換する。
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=3003809