In February 2016, Hino filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Power transmission, covering the Blue Ribbon II. The filing affects 419 vehicles manufactured between March 16, 2010 and August 2015.
Overview
| MLIT filing number | 1137550 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | February 9, 2016 |
| Manufacturer(s) | Hino |
| Component | Power transmission |
| Production period | March 16, 2010 — August 2015 |
| Vehicles affected | 419 units |
Filing in context
The Power transmission is the most frequently cited component category in this archive, appearing in 7 of its 4,890 filings. This filing is one of 31 Hino notifications from 2016 in this archive. For scale, 3,238 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 5 years and 5 months.
Defect
On transit buses equipped with an automatic transmission, the torque converter backing plate mounting bolts are improperly torqued and the threaded portion of the torque converter cover is improperly machined, resulting in insufficient clamping force on the bolts. Continued operation causes the bolts to fracture. The fractured bolts become lodged between the torque converter cover and the turbine and, in the worst case, lock up the torque converter, stalling the engine and rendering the vehicle unable to be driven.
Corrective action
On all vehicles, replace the backing plate mounting bolts with new bolts and retorque them to the specified value.
Affected models & chassis ranges
This filing lists 18 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-KV234N3 | 日野ブルーリボンⅡ | KV234N3-7000023 — KV234N3-7000848 |
| LKG-KV234L3 | 日野ブルーリボンⅡ | KV234L3-7000006 — KV234L3-7000543 |
| LKG-KV234N3 | 日野ブルーリボンⅡ | KV234N3-7000023 — KV234N3-7000848 |
| LKG-KV234N3改 | 日野ブルーリボンⅡ | KV234N3-7000023 — KV234N3-7000848 |
| LKG-KV234Q3 | 日野ブルーリボンⅡ | KV234Q3-7000031 — KV234Q3-7000330 |
| PDG-KV234L2 | 日野ブルーリボンⅡ | KV234L2-7000499 — KV234L2-7000531 |
| PDG-KV234L2改 | 日野ブルーリボンⅡ | KV234L2-7000499 — KV234L2-7000531 |
| PDG-KV234N2 | 日野ブルーリボンⅡ | KV234N2-7000580 — KV234N2-7000663 |
| PDG-KV234N2改 | 日野ブルーリボンⅡ | KV234N2-7000580 — KV234N2-7000663 |
| QDG-KV234L3 | 日野ブルーリボンⅡ | KV234L3-7000006 — KV234L3-7000543 |
| QDG-KV234Q3 | 日野ブルーリボンⅡ | KV234Q3-7000031 — KV234Q3-7000330 |
| QDG-KV234Q3改 | 日野ブルーリボンⅡ | KV234Q3-7000031 — KV234Q3-7000330 |
| QKG-KV234L3 | 日野ブルーリボンⅡ | KV234L3-7000006 — KV234L3-7000543 |
| QKG-KV234L3改 | 日野ブルーリボンⅡ | KV234L3-7000006 — KV234L3-7000543 |
| QKG-KV234N3 | 日野ブルーリボンⅡ | KV234N3-7000023 — KV234N3-7000848 |
| QKG-KV234N3改 | 日野ブルーリボンⅡ | KV234N3-7000023 — KV234N3-7000848 |
| QKG-KV234Q3 | 日野ブルーリボンⅡ | KV234Q3-7000031 — KV234Q3-7000330 |
| QKG-KV234Q3改 | 日野ブルーリボンⅡ | KV234Q3-7000031 — KV234Q3-7000330 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
自動変速機を搭載した路線バスにおいて、トルクコンバータ部バッキングプレートのトルクコンバータカバーへの取付けボルト締付け方法およびトルクコンバータカバーのねじ部加工が不適切なため、当該ボルトの軸力が不足しているものがある。そのため、そのままの状態で使用を続けるとボルトが折損し、折損したボルトがトルクコンバータカバーとタービンとの間に挟まり、最悪の場合、トルクコンバータがロックアップした状態となり、エンストして走行できなくなるおそれがある。
改善措置
全車両、バッキングプレート取付けボルトを新品に交換し、規定トルクで締め直す。
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=3003721
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