Overview
| MLIT filing number | 2100850 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | September 20, 1994 |
| Manufacturer(s) | Isuzu |
| Component | Cooling system |
| Production period | May 17, 1993 — August 20, 1994 |
| Vehicles affected | 72,293 units |
Issue
If the engine overheats and use continues without correction, steam pressure causes the coolant auxiliary tank (sub-tank) to expand. This expansion crushes and blocks the overflow pipe routed between the sub-tank and the mudguard—the pipe responsible for discharging excess coolant. In the worst case, the sub-tank cap is forced off and coolant is ejected.
Corrective action
On all vehicles, change the material and routing position of the overflow pipe.
Affected models & chassis ranges
This filing lists 55 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 |
|---|---|---|
| U-NHR69C | Elf | NHR69C-7400013 — NHR69C-7402302 |
| U-NHR69CA | Elf | NHR69C-7400013 — NHR69C-7402302 |
| U-NHR69CAVN | Elf | NHR69C-7400013 — NHR69C-7402302 |
| U-NHR69CV | Elf | NHR69C-7400013 — NHR69C-7402302 |
| U-NHR69E | Elf | NHR69E-7400036 — NHR69E-7409263 |
| U-NHR69EA | Elf | NHR69E-7400036 — NHR69E-7409263 |
| U-NHR69EAVN | Elf | NHR69E-7400036 — NHR69E-7409263 |
| U-NHR69EVN | Elf | NHR69E-7400036 — NHR69E-7409263 |
| U-NHS69EA | Elf | NHS69E-7400015 — NHS69E-7402309 |
| U-NHS69EAVN | Elf | NHS69E-7400015 — NHS69E-7402309 |
| U-NKR58EA | Elf | NKR58E-7400010 — NKR58E-7406589 |
| U-NKR58EAVN | Elf | NKR58E-7400010 — NKR58E-7406589 |
| U-NKR58LAR | Elf | NKR58L-7400008 — NKR58L-7401575 |
| U-NKR58LAVN | Elf | NKR58L-7400008 — NKR58L-7401575 |
| U-NKR63E | Elf | NKR63E-7400012 — NKR63E-7402190 |
| U-NKR63ED | Elf | NKR63E-7400012 — NKR63E-7402190 |
| U-NKR63EPN | Elf | NKR63E-7400012 — NKR63E-7402190 |
| U-NKR63LR | Elf | NKR63L-7400002 — NKR63L-7400190 |
| U-NKR66E | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66E2N | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66EA | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66EAVN | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66ED | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66EN | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66EPN | Elf | NKR66E-7400052 — NKR66E-7430475 |
| U-NKR66GAVN | Elf | NKR66G-7400014 — NKR66G-7401241 |
| U-NKR66GN | Elf | NKR66G-7400014 — NKR66G-7401241 |
| U-NKR66LAR | Elf | NKR66L-7400027 — NKR66L-7405115 |
| U-NKR66LAVN | Elf | NKR66L-7400027 — NKR66L-7405115 |
| U-NKR66LR | Elf | NKR66L-7400027 — NKR66L-7405115 |
| U-NKR66LVN | Elf | NKR66L-7400027 — NKR66L-7405115 |
| U-NKR66LZN | Elf | NKR66LZ-7400003 — NKR66LZ-7400006 |
| U-NKR69CAEG | Elf | NKR69C-7400003 — NKR69C-7400249 |
| U-NKR69EA | Elf | NKR69E-7400012 — NLR69E-7401783 |
| U-NKR69EAVN | Elf | NKR69E-7400012 — NLR69E-7401783 |
| U-NKS66GDR | Elf | NKS66G-7400020 — NKR66G-7400934 |
| U-NKS66GR | Elf | NKS66G-7400020 — NKR66G-7400934 |
| U-NPR66GDR | Elf | NPR66G-7400005 — NPR66G-7401996 |
| U-NPR66GR | Elf | NPR66G-7400005 — NPR66G-7401996 |
| U-NPR66GVN | Elf | NPR66G-7400005 — NPR66G-7401996 |
| U-NPR66GYN | Elf | NPR66GY-7400002 — NPR66GY-7400084 |
| U-NPR66LR | Elf | NPR66L-7400028 — NPR66L-7411952 |
| U-NPR66LVN | Elf | NPR66L-7400028 — NPR66L-7411952 |
| U-NPR66LZN | Elf | NPR66LZ-7400006 — NPR66LZ-7400027 |
| U-NPR66PR | Elf | NPR66P-7400019 — NPR66P-7403757 |
| U-NPR66PVN | Elf | NPR66P-7400019 — NPR66P-7403757 |
| U-NPR70GDR | Elf | NPR70G-7400004 — NPR70G-7400259 |
| U-NPR70LR | Elf | NPR70L-7400017 — NPR70L-7400715 |
| U-NPR70LVN | Elf | NPR70L-7400017 — NPR70L-7400715 |
| U-NPR70LYR | Elf | NPR70LY-7400004 — NPR70LY-7400589 |
| U-NPR70PR | Elf | NPR70P-7400005 — NPR70P-7400627 |
| U-NPR70PVN | Elf | NPR70P-7400005 — NPR70P-7400627 |
| U-NPR70PYR | Elf | NPR70PY-7400006 — NPR70PY-7400627 |
| U-NPS66GN | Elf | NPS66G-7400002 — NPS66G-7400032 |
| U-NPS66LN | Elf | NPS66L-7400009 — NPS66L-7400265 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
万一原動機が加熱（オーバーヒート）し、そのままの状態で使用を続けると、冷却水補 助タンク（サブタンク）が蒸気圧力により膨張し、当該サブタンクと泥除けとの間に配管 されている余剰冷却水を排出するパイプ（オーバーフローパイプ）が押し潰され閉塞し、 最悪の場合、サブタンクの蓋（キャップ）が外れて冷却水が噴出するおそれがある。
改善措置
全車両、オーバーフローパイプの材質及び配管位置を変更する。
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=3008549