In March 2013, Mitsubishi & UD Trucks filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Parking brake, covering the Aero Star, Aero ACE and 5 more models. The filing affects 2,430 vehicles manufactured between June 24, 2010 and January 18, 2013.
Overview
| MLIT filing number | 1131270 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | March 28, 2013 |
| Manufacturer(s) | Mitsubishi, UD Trucks |
| Component | Parking brake |
| Production period | June 24, 2010 — January 18, 2013 |
| Vehicles affected | 2,430 units |
Filing in context
This notification is a joint filing by 2 manufacturers: Mitsubishi & UD Trucks.
The Parking brake is the most frequently cited component category in this archive, appearing in 7 of its 4,890 filings. This filing is one of 80 Mitsubishi notifications from 2013 in this archive. For scale, 2,312 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 6 months.
Defect
On large and medium-duty buses, the piston design inside the hand control valve that activates the parking brake is inadequate. Moisture in the compressed air causes the piston to elongate, reducing the opening of the exhaust valve. This slows air discharge from the parking brake chamber, causing a delay in parking brake engagement. If the vehicle continues to be operated in this condition, the parking brake may fail to hold, and the vehicle may roll away.
Corrective action
On all vehicles, the hand control valve will be replaced with a corrected/revised part.
Affected models & chassis ranges
This filing lists 26 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-MM96FH | ふそうエアロエース | MM96FH-22001 — MM96FH-22034 |
| LKG-AP35FK | スペースランナー Ａ | AP35FK-20001 — AP35FK-20002 |
| LKG-AP35FM | スペースランナー Ａ | AP35FM-20001 — AP35FM-20020 |
| LKG-AP35FP | スペースランナー Ａ | AP35FP-20001 — AP35FP-20003 |
| LKG-AP37FK | スペースランナー Ａ | AP37FK-20001 — AP37FK-20024 |
| LKG-AP37FM | スペースランナー Ａ | AP37FM-20001 — AP37FM-20005 |
| LKG-AS96VP | スペース アロー Ａ | AS96VP-20001 — AS96VP-20016; AS96VP-20005 — AS96VP-20017 |
| LKG-MP35FK | ふそうエアロスター | MP35FK-20001 — MP35FK-22006 |
| LKG-MP35FM | ふそうエアロスター | MP35FM-20001 — MP35FM-22057 |
| LKG-MP35FP | ふそうエアロスター | MP35FP-20002 — MP35FP-22019 |
| LKG-MP37FK | ふそうエアロスター | MP37FK-20001 — MP37FK-22043 |
| LKG-MP37FM | ふそうエアロスター | MP37FM-20001 — MP37FM-22021 |
| LKG-MS96VP | ふそうエアロクィーン | MS96VP-20001 — MS96VP-20556; MS96VP-20012 — MS96VP-20571 |
| QDG-MM96FH | ふそうエアロエース | MM96FH-24102 — MM96FH-24135 |
| QDG-MP35FM | ふそうエアロスター | MP35FM-62120 — MP35FM-62146 |
| QDG-MP35FP | ふそうエアロスター | MP35FP-62104 — MP35FP-62144 |
| QKG-MP35FK | ふそうエアロスター | MP35FK-22007 — MP35FK-62107 |
| QKG-MP35FM | ふそうエアロスター | MP35FM-22058 — MP35FM-62145 |
| QKG-MP35FP | ふそうエアロスター | MP35FP-20001 — MP35FP-62143 |
| QKG-MP37FK | ふそうエアロスター | MP37FK-22044 — MP37FK-62253 |
| QKG-MP37FM | ふそうエアロスター | MP37FM-22022 — MP37FM-62136 |
| QRG-MS96VP | ふそうエアロクィーン | MS96VP-20586 — MS96VP-22279; MS96VP-20002 — MS96VP-22294 |
| SDG-MM96FH | ふそうエアロエース | MM96FH-22004 — MM96FH-22036 |
| SKG-MK27FH | ふそうエアロミディ | MK27FH-50003 — MK27FH-50018 |
| TDG-MM96FH | ふそうエアロエース | MM96FH-22002 — MM96FH-24136 |
| TKG-MK27FH | ふそうエアロミディ | MK27FH-50001 — MK27FH-52113 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大・中型バスにおいて、駐車ブレーキを作動させるハンドコントロールバルブ内のピストンの構造が不適切なため、圧縮空気中に含まれる水分によってピストンの全長が増大し、排気バルブの開度が小さくなる場合がある。そのため、駐車ブレーキチャンバーからの排気が遅くなり、駐車ブレーキに作動遅れが生じ、そのままの状態で使用を続けると、駐車ブレーキが効かなくなり、車両が動き出すおそれがある。
改善措置
全車両、ハンドコントロールバルブ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=3003004
Related recalls
Same manufacturer, same component
Other Mitsubishi filings involving the Parking brake, closest to this one by filing date.
Parking brake — affects 2,048 vehicles.
Open recall detail →Parking brake — affects 24 vehicles.
Open recall detail →Parking brake — affects 7,556 vehicles.
Open recall detail →Parking brake — affects 552 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
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 →Computer (Engine) — affects 1,720 vehicles.
Open recall detail →Computer (Engine) — affects 1,720 vehicles.
Open recall detail →All Mitsubishi recalls · All UD Trucks recalls · All 2013 recalls · Recall Archive home