คำอธิบาย
Komatsu’s catalogue confirms 708-1T-00472 as a Pump Assembly with a published width of 287.5 mm. The two neighbouring numbers are the part of this listing that needs care, because suppliers treat all three as one part and the manufacturer’s data does not support that.
Variants, stated as evidence rather than as a rule
| Number | Where it appears | Status of the evidence |
|---|---|---|
| 708-1T-00472 | Komatsu online parts catalogue, item name Pump Assembly, width 287.5 mm | Manufacturer-confirmed entry |
| 708-1T-00470 | Trade listings for D155A-6 and D155AX-6; no current Komatsu catalogue entry found | Trade-established only |
| 708-1T-00471 | Trade listings for D155AX-6 and D155A-6R; no EPC-derived record located | Trade-established only |
No source we could check documents a supersession chain between these three, and the physical differences are not published. The reasonable reading is that they are separate catalogue line items covering different build specifications of the same machine family, which is common in Komatsu numbering. What that means commercially: do not order by the model badge, and do not assume a supplier’s compatibility list is a substitute table.
How we quote it
Send the number cast on your old pump and the machine serial. If the parts record for that serial gives 00470 or 00471, we will tell you whether we stock that specific item or whether 00472 is the current catalogue answer, and we will say so before you pay rather than after the pump arrives on the bench.
Diagnosis and fitting
- Clean the core pack first, then measure fan speed and pump output with the oil hot.
- Short output points at this pump; correct output with a lagging fan and a heavy motor drain points at the motor.
- Match shaft spline, pilot, flange, port positions and control orientation against the removed unit.
- Prime the casing before cranking, change the return filter element, keep the case drain unrestricted to tank, and target ISO 4406 18/16/13.
The test sequence is in our 液压风扇泵诊断指南, and the D275A-5D fan pump is on our 708-1T-00421 page.
订购
最小起订量一件。新售后件保修三至六个月，具体以您的形式发票为准。木箱封箱前按您的订单进行台架检测并拍照，付款后5至8个工作日内发货，视库存情况而定。该系列隶属于 小松液压风扇马达.
