In September 2017, UD Trucks filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Suspension), covering the Quon. The filing affects 50 vehicles manufactured between April 28, 2017 and July 31, 2017.
Overview
| MLIT filing number | 1141120 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | September 15, 2017 |
| Manufacturer(s) | UD Trucks |
| Component | Computer (Suspension) |
| Production period | April 28, 2017 — July 31, 2017 |
| Vehicles affected | 50 units |
Filing in context
This is the only filing in the archive that cites the Computer (Suspension) as the affected component. This filing is one of 18 UD Trucks notifications from 2017 in this archive. For scale, 4,147 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 months.
Defect
On heavy-duty trucks with a rear two-axle air suspension, the maximum vehicle height setting for the ride height adjustment system is incorrect. When the vehicle is raised to the maximum height during loading or unloading operations, the rear rear-axle shock absorber exceeds its maximum range of travel. When the vehicle height is subsequently lowered, internal components deform and the suspension may not descend smoothly. Continued use may cause the shock absorber piston rod to fracture and interfere with the air spring, causing an air leak, or interfere with the tire and cause a burst. In the worst case, the heat generated may cause ignition.
Corrective action
On all vehicles, update the ride height adjustment system software and inspect the shock absorbers, replacing any damaged units with new parts.
Affected models & chassis ranges
This filing lists 3 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 |
|---|---|---|
| 2PG-CD5CA | QUON | JNCMB02C2HU016413 — JNCMBP0C0HU023498 |
| 2PG-CG5CA | QUON | JNCMB02G3HU017251 — JNCMB02G9HU024365 |
| 2PG-CW5CA | QUON | JNCMB02D7HU022507 — JNCMBP0D3HU024900 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型トラックの後２軸エアサスペンション仕様において、車高調整装置の最大車高設定値が不適切なため、荷役作業時等で最大車高まで上昇させた場合に、後後軸のショックアブソーバーが最大可動範囲を超え、その後車高を下降した際に内部部品が変形してスムーズに下降しなくなることがある。そのため、そのままの状態で使用を続けると、当該ショックアブソーバーのピストンロッドが折損して、エアスプリングと干渉しエア漏れを起こす、もしくはタイヤと干渉してバーストし、最悪の場合、発熱により発火するおそれがある。
改善措置
全車両、車高調整装置のプログラムを変更するとともに、ショックアブソーバーを点検し、損傷がある場合は新品に交換する。
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=3004101
Related recalls
Same manufacturer, close in filing date
Other UD Trucks filings closest to this one by filing date.
Other equipment — affects 83 vehicles.
Open recall detail →Engine assembly — affects 2,075 vehicles.
Open recall detail →Spring/air suspension — affects 1,440 vehicles.
Open recall detail →Body structure (other) — affects 148 vehicles.
Open recall detail →Service Brake — General — affects 2,825 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Other (Control Device) — affects 26,885 vehicles.
Open recall detail →Propeller Shaft — affects 17,587 vehicles.
Open recall detail →Safety Lighting (Other) — affects 29,097 vehicles.
Open recall detail →Drive shaft — affects 5,994 vehicles.
Open recall detail →Other (control system) — affects 686 vehicles.
Open recall detail →All UD Trucks recalls · All 2017 recalls · Recall Archive home