In February 2011, Mitsubishi filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Engine Assembly, covering the Aero Star. The filing affects 2,863 vehicles manufactured between May 29, 2000 and August 28, 2007.
Overview
| MLIT filing number | 1127040 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | February 3, 2011 |
| Manufacturer(s) | Mitsubishi |
| Component | Engine Assembly |
| Production period | May 29, 2000 — August 28, 2007 |
| Vehicles affected | 2,863 units |
Filing in context
The Engine Assembly is the most frequently cited component category in this archive, appearing in 43 of its 4,890 filings. This filing is one of 38 Mitsubishi notifications from 2011 in this archive. For scale, 2,234 of the 4,890 filings in this archive report a larger number of affected vehicles; the vehicles involved here were manufactured over a span of about 7 years and 2 months.
Defect
On large transit buses, the flywheel ring gear has insufficient strength. Frequent engine starts by the idling stop-and-start system can cause the gear teeth to fracture, preventing engine restart. In the worst case, fractured gear fragments may become trapped between the flywheel housing and the ring gear, puncturing the flywheel housing and causing an engine oil leak.
Corrective action
On all vehicles, replace the ring gear and flywheel with corrected parts.
Affected models & chassis ranges
This filing lists 12 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 | ふそうエアロスター | MP33JK-20003 — MP33JK-20006 |
| KL-MP33JM | ふそうエアロスター | MP33JM-20001 — MP33JM-21016 |
| KL-MP35JK | ふそうエアロスター | MP35JK-20004 — MP35JK-30015 |
| KL-MP35JM | ふそうエアロスター | MP35JM-20002 — MP35JM-32003 |
| KL-MP35JP | ふそうエアロスター | MP35JP-20005 — MP35JP-21034 |
| KL-MP37JK | ふそうエアロスター | MP37JK-20001 — MP37JK-31002 |
| KL-MP37JM | ふそうエアロスター | MP37JM-20002 — MP37JM-31001 |
| PJ-MP35JK | ふそうエアロスター | MP35JK-23001 — MP35JK-25034 |
| PJ-MP35JM | ふそうエアロスター | MP35JM-23002 — MP35JM-25262 |
| PJ-MP35JP | ふそうエアロスター | MP35JP-23003 — MP35JP-25047 |
| PJ-MP37JK | ふそうエアロスター | MP37JK-23001 — MP37JK-25078 |
| PJ-MP37JM | ふそうエアロスター | MP37JM-23002 — MP37JM-25055 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型路線バスにおいて、フライホイールリングギヤの強度が不足しているため、アイドリングストップ＆スタートシステムによるエンジンの始動を頻繁に行うと、当該ギヤ端部が破損してエンジンの再始動が出来なくなり、最悪の場合、欠落したギヤの破片がフライホイールハウジングとリングギヤの間に噛み込んでフライホイールハウジングに穴が開き、エンジンオイルが漏れるおそれがある。
改善措置
全車両、リングギヤとフライホイール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=3002532
Related recalls
Same manufacturer, same component
Other Mitsubishi filings involving the Engine Assembly, closest to this one by filing date.
Engine Assembly — affects 31,924 vehicles.
Open recall detail →Engine Assembly — affects 78 vehicles.
Open recall detail →Engine Assembly — affects 11 vehicles.
Open recall detail →Engine Assembly — affects 35 vehicles.
Open recall detail →Engine Assembly — affects 139 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Wiring — affects 1,051 vehicles.
Open recall detail →Other (safety lighting) — affects 30 vehicles.
Open recall detail →Other (Power Transmission) — affects 188 vehicles.
Open recall detail →Wiring — affects 234 vehicles.
Open recall detail →Other — affects 572 vehicles.
Open recall detail →All Mitsubishi recalls · All 2011 recalls · Recall Archive home