Blade Cylinder Check Valve May Fail on Certain 300.9D Mini Hydraulic Excavators {5362, 7562}
- Mini Hydraulic Excavator
- 300.9D (S/N: DW21-UP; LJ21-UP; LJM1-UP; TGP1-UP)
Reference: "Testing and Adjusting", UENR0478
Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified.
Problem
The blade cylinder check valve may fail on certain 300.9D mini hydraulic excavators. If the blade cylinder check valve fails, it will restrict hydraulic fluid from exiting the blade cylinder. The restriction may cause slow or intermittent function of the blade cylinder, or stop functioning completely.
Solution
Show/hide table
| Required Parts | ||
|---|---|---|
| Qty | Part Number | Part Name |
| 1 | Blade Cylinder Gp | |
| 1 | Check Valve | |
In the event of a failure, replace with the same part number.
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