In July 2004, Mitsubishi filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Engine, covering the Libero, Lancer and 4 more models. The filing affects 43,504 vehicles manufactured between June 1992 and October 1994.
Overview
| MLIT filing number | 2102560 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | July 7, 2004 |
| Manufacturer(s) | Mitsubishi |
| Component | Engine |
| Production period | June 1992 — October 1994 |
| Vehicles affected | 43,504 units |
Filing in context
The Engine is the most frequently cited component category in this archive, appearing in 72 of its 4,890 filings. This filing is one of 150 Mitsubishi notifications from 2004 in this archive. For scale, 814 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 2 years and 4 months.
Issue
The pulley geometry on the alternator—which incorporates an internal vacuum pump—is improperly designed. If the alternator drive belt is adjusted to excessive tension during maintenance, engine speed fluctuations cause the belt to wear prematurely. If use continues in this condition, the belt may fail in the worst case, stopping the vacuum pump and impairing brake booster function, which reduces braking force. Note: when the belt is adjusted within the specified value, it retains sufficient durability.
Corrective action
On all vehicles, inspect the alternator. Where an uncorrected part is installed, replace the alternator with a corrected part and replace the alternator drive belt with a new one.
Affected models & chassis ranges
This filing lists 13 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 |
|---|---|---|
| S-CB8V | Libero | CB8V-0000008 — CB8V-0200697 |
| S-CD8V | Libero | CD8V-0100005 — CD8V-0200541 |
| X-CB8A | LANCER | CB8A-0000201 — CB8A-0200291 |
| X-CB8AR | LANCER | CB8A-0000336 — CB8A-0200283 |
| X-CB8W | Libero | CB8W-0000201 — CB8W-0200497 |
| X-CD8A | LANCER | CD8A-0000201 — CD8A-0200206 |
| X-CD8W | Libero | CD8W-0000009 — CD8W-5100258 |
| X-E57A | GALANT | E57A-0000004 — E57A-0300120 |
| Y-E77A | GALANT | E77A-0000009 — E77A-0300105 |
| Y-N28W | ＲＶＲ | N28W-5000008 — N28W-5201415 |
| Y-N28WG | ＲＶＲスポーツギア | N28W-5000009 — N28W-5201424 |
| Y-N38W | CHARIOT | N38W-0000005 — N38W-0100556 |
| Y-N48W | CHARIOT | N48W-0000004 — N48W-0100596 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
負圧ポンプを内蔵したオルタネータのプーリ形状が不適切なため、整備時、オルタネー タドライブベルトを過張力で調整すると、エンジンの回転変動により当該ベルトが早期に 摩耗する場合がある。そのため、そのままの状態で使用を続けると、最悪の場合、ベルト が破損し、負圧ポンプが停止することによりブレーキ倍力機能が損なわれ、制動力が低下 するおそれがある。なお、当該ベルトが規定値内の調整の場合は、当該ベルトは十分な耐 久性がある。
改善措置
全車両、オルタネータを点検し、未対策品が装着されているものはオルタネータを対策品 にオルタネータドライブベルトを新品と交換する。
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=3008640
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Open recall detail →All Mitsubishi recalls · All 2004 recalls · Recall Archive home