Overview
| MLIT filing number | 1112220 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | September 15, 2004 |
| Manufacturer(s) | Mitsubishi |
| Component | Starting system |
| Production period | May 18, 2000 — May 14, 2004 |
| Vehicles affected | 2,052 units |
Defect
In the starting system of large route buses, the flywheel ring gear hardness and the wiring length of the starter magnetic switch activation circuit are both incorrect. During starting operation, the starter pinion collides with and interferes with the flywheel ring gear, causing poor mesh engagement and resulting in chipping and damage to the gear teeth. This makes engine starting difficult or impossible. If starting is attempted repeatedly, a vehicle fire may occur in the worst case.
Corrective action
On all vehicles, replace the starter assembly (including the starter relay) with the corrected part. On vehicles not equipped with a delay relay, install the delay relay as an additional part. On vehicles with incorrect flywheel ring gear hardness, replace the ring gear with the corrected part. On vehicles already equipped with a corrected flywheel ring gear, inspect the gear face and replace with a new part if any abnormality is found.
Affected models & chassis ranges
This filing lists 8 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 |
|---|---|---|
| KL-MP33JK | Aero Star | MP33JK-20001 — MP33JK-21004 |
| KL-MP33JM | Aero Star | MP33JM-20001 — MP33JM-21021 |
| KL-MP33JP | Aero Star | MP33JP-20001 — MP33JP-21001 |
| KL-MP35JK | Aero Star | MP35JK-20001 — MP35JK-31003 |
| KL-MP35JM | Aero Star | MP35JM-20001 — MP35JM-31007 |
| KL-MP35JP | Aero Star | MP35JP-20001 — MP35JP-31011 |
| KL-MP37JK | Aero Star | MP37JK-20001 — MP37JK-31002 |
| KL-MP37JM | Aero Star | MP37JM-20001 — MP37JM-31001 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型路線バスの始動装置において、フライホイールリングギヤの硬度及びスタータマグネ チックスイッチ起動回路の配線長さが不適切なため、始動操作時にスタータピニオンがフ ライホイールリングギヤに衝突干渉し、噛合い不良からギヤ端部が欠損、損傷することが ある。そのため、エンジンの始動が困難あるいは不能となり、始動操作を繰返し行なうと 、最悪の場合、火災になるおそれがある。
改善措置
全車両、スタータ一式（スタータリレー付）を対策品と交換する。また、遅延リレー未装 着車両については、遅延リレーを追加装着する。さらに、フライホイールリングギヤ硬度 が不適切な車両は当該リングギヤを対策品と交換する。なお、対策されたフライホイール リングギヤが装着されている車両は、ギヤ面を点検し、異常が認められるものは新品と交 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=3000884
Related
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