In July 2013, Mitsubishi & UD Trucks filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Other (Control System), covering the Super Great, Aero ACE and 2 more models. The filing affects 6,430 vehicles manufactured between November 2009 and June 2013.
Overview
| MLIT filing number | 1131911 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | July 18, 2013 |
| Manufacturer(s) | Mitsubishi, UD Trucks |
| Component | Other (Control System) |
| Production period | November 2009 — June 2013 |
| Vehicles affected | 6,430 units |
Filing in context
This notification is a joint filing by 2 manufacturers: Mitsubishi & UD Trucks.
The Other (Control System) is the most frequently cited component category in this archive, appearing in 46 of its 4,890 filings. This filing is one of 80 Mitsubishi notifications from 2013 in this archive. For scale, 1,846 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 3 years and 7 months.
Defect
On large trucks and buses equipped with air brakes, the safety valve—designed to open and relieve pressure when air line pressure rises excessively—has insufficient air discharge capacity. This allows air line pressure to reach abnormally high levels, causing the ASR valve (an electromagnetic valve that temporarily applies braking to suppress wheel spin on slippery surfaces) to malfunction and produce brake drag. Continued operation with brake drag causes the brakes to overheat and, in the worst case, may result in a vehicle fire.
Corrective action
On all vehicles, install two additional safety valves at the compressed air dryer outlet to increase air discharge capacity. Additionally, inspect the brake components; if drag is confirmed, replace any affected parts with serviceable units.
Affected models & chassis ranges
This filing lists 27 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-FV50VJR | ふそうスーパーグレート | FV50VJ-505001 — FV50VJ-505102 |
| LDG-FV50VX | ふそうスーパーグレート | FV50VX-500150 |
| LDG-FV50VY | ふそうスーパーグレート | FV50VY-500146 |
| LKG-AS96VP | スペースウィングＡ | AS96VP-20013 |
| LKG-FS50VZ | ふそうスーパーグレート | FS50VZ-500019 — FS50VZ-500034 |
| LKG-FS54VY | ふそうスーパーグレート | FS54VY-500001 — FS54VY-500104 |
| LKG-FS54VZ | ふそうスーパーグレート | FS54VZ-500001 — FS54VZ-570006 |
| LKG-FS55VY | ふそうスーパーグレート | FS55VY-500001 — FS55VY-500218 |
| LKG-FS55VZ | ふそうスーパーグレート | FS55VZ-500001 — FS55VZ-510001 |
| LKG-FU50VY | ふそうスーパーグレート | FU50VY-500097 — FU50VY-500171 |
| LKG-FV50VY | ふそうスーパーグレート | FV50VY-500023 — FV50VY-500219 |
| LKG-FV50VZ | ふそうスーパーグレート | FV50VZ-500002 — FV50VZ-500377 |
| LKG-FY54VY | ふそうスーパーグレート | FY54VY-500001 — FY54VY-570002 |
| LKG-MS96VP | ふそうエアロエース | MS96VP-20031 — MS96VP-20557; MS96VP-20146 — MS96VP-20483 |
| QDG-FV50VJR | ふそうスーパーグレート | FV50VJ-505261 — FV50VJ-530188 |
| QKG-FS50VZ | ふそうスーパーグレート | FS50VZ-500130 — FS50VZ-520054 |
| QKG-FS54VY | ふそうスーパーグレート | FS54VY-500063 — FS54VY-530038 |
| QKG-FS54VZ | ふそうスーパーグレート | FS54VZ-500955 — FS54VZ-570009 |
| QKG-FS55VY | ふそうスーパーグレート | FS55VY-500219 — FS55VY-530029 |
| QKG-FS55VZ | ふそうスーパーグレート | FS55VZ-500002 — FS55VZ-570004 |
| QKG-FU50VY | ふそうスーパーグレート | FU50VY-530009 — FU50VY-530030 |
| QKG-FV50VX | ふそうスーパーグレート | FV50VX-530031 — FV50VX-530058 |
| QKG-FV50VY | ふそうスーパーグレート | FV50VY-530036 — FV50VY-530092 |
| QKG-FV50VZ | ふそうスーパーグレート | FV50VZ-500382 — FV50VZ-530164 |
| QKG-FY50VY | ふそうスーパーグレート | FY50VY-520014 — FY50VY-520026 |
| QKG-FY54VY | ふそうスーパーグレート | FY54VY-500158 — FY54VY-570003 |
| QRG-MS96VP | ふそうエアロエース | MS96VP-20587 — MS96VP-23284; MS96VP-20589 — MS96VP-23244 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
①大型トラック・バスのエアブレーキにおいて、セーフティバルブ（エアラインの保護を目的にエアラインが高圧になった場合に弁が開き圧力をさげるもの）のエア排出量が不足しているため、エアラインが高圧になることでＡＳＲバルブ（滑りやすい路面等でタイヤの空転を抑えるために一時的に制動をかける電磁弁）が誤作動し、ブレーキの引き摺りを起こすものがある。そのため、そのままの状態で使用を続けるとブレーキが過熱し、最悪の場合、火災に至るおそれがある。
改善措置
①全車両、エアドライヤの出口にセーフティバルブを２個追加し、エア排出量を増加させる。また、ブレーキ周りを点検し、引き摺りの発生が確認された場合には、異常が認められた部品を良品に交換する。
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=3003079
Related recalls
Same manufacturer, same component
Other Mitsubishi filings involving the Other (Control System), closest to this one by filing date.
Other (Control System) — affects 370 vehicles.
Open recall detail →Other (Control System) — affects 13,090 vehicles.
Open recall detail →Other (Control System) — affects 462 vehicles.
Open recall detail →Other (Control System) — affects 3 vehicles.
Open recall detail →Other (Control System) — affects 23 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Other — affects 526 vehicles.
Open recall detail →Rearview Mirror — affects 1,121 vehicles.
Open recall detail →Rearview Mirror — affects 3,024 vehicles.
Open recall detail →Other (body/frame) — affects 4,542 vehicles.
Open recall detail →Other (frame/body) — affects 295 vehicles.
Open recall detail →All Mitsubishi recalls · All UD Trucks recalls · All 2013 recalls · Recall Archive home