In February 2003, Mitsubishi filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Drive force transmission unit, covering the Wheel Loader WS510. The filing affects 184 vehicles manufactured between January 15, 2000 and November 2002.
Overview
| MLIT filing number | 1109180 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | February 6, 2003 |
| Manufacturer(s) | Mitsubishi |
| Component | Drive force transmission unit |
| Production period | January 15, 2000 — November 2002 |
| Vehicles affected | 184 units |
Filing in context
The Drive force transmission unit is the most frequently cited component category in this archive, appearing in 5 of its 4,890 filings. This filing is one of 36 Mitsubishi notifications from 2003 in this archive. For scale, 3,619 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 10 months.
Defect
In the power transmission system, the lock nut securing the bevel pinion bearing in the front wheel differential was tightened with insufficient torque and improperly staked to prevent rotation. Continued use allows the lock nut to loosen, producing abnormal noise. In the worst case, the bevel pinion fractures, eliminating braking force to the front wheels and reducing overall braking performance.
Corrective action
On all vehicles, replace the lock nut with a new part. If any signs of loosening are found during replacement, inspect the bevel pinion, bevel gear, and bearing for damage and replace any damaged components with new parts.
Affected models & chassis ranges
This filing lists 1 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 |
|---|---|---|
| 9W | 三菱ホイールローダＷＳ５１０ | 9W000003 — 9W001029 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
動力伝達装置において、前輪差動機のベベルピニオンのベアリングを締め付けているロッ クナットの締め付け力及び回り止めのカシメに不適切なものがあり、そのままの状態で使 用を続けると、ロックナットが緩み異音が発生し、最悪の場合、ベベルピニオンが破損し て前輪側に制動力が伝わらなくなり、制動力が低下するおそれがある。
改善措置
全車両、ロックナットを新品に交換する。交換時にロックナットに緩みの兆候があるもの については、ベベルピニオン、ベベルギヤ及びベアリングの損傷状態を点検し、損傷して いるものについてはベベルピニオン、ベベルギヤ及びベアリングを新品と交換する。
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=3000552
Related recalls
Same manufacturer, same component
Other Mitsubishi filings involving the Drive force transmission unit, closest to this one by filing date.
Drive force transmission unit — affects 331 vehicles.
Open recall detail →Drive force transmission unit — affects 82 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Drive force transmission — affects 280 vehicles.
Open recall detail →Hydraulic pressure control and transmission unit — affects 115 vehicles.
Open recall detail →Power Steering — affects 146 vehicles.
Open recall detail →Frame — affects 86 vehicles.
Open recall detail →All Mitsubishi recalls · All 2003 recalls · Recall Archive home