説明
The EW145B is a wheeled machine doing tracked work, and that single fact changes how its hydraulics fail. Volvo’s parts literature records 14524927 as a gear pump in the machine’s hydraulic system, and dealer data places it in the auxiliary and cooling supply role rather than the main pump position.
適合性と根拠
Volvo EW145B wheel excavator, with the EW145 series listed at 12,800 to 15,000 kg operating weight and 110 kW rated power in Volvo CE’s published specification. The item name Gear Pump is recorded in Volvo parts literature; the specific circuit is dealer-established rather than stated by the manufacturer, so confirm against the number cast on your pump before ordering.
Why a wheeled excavator is harder on a gear pump
- It travels under its own power on roads, so the engine runs at high rpm for long stretches while the hydraulic demand stays low, and the pump is turning faster than it would on a tracked machine.
- It works in urban and utility settings with frequent short cycles, which means more cold starts, more thermal cycling and more condensation in the tank.
- Road travel also pulls more dust through the cooling pack than a crawler doing the same duty, so the fan circuit is asked to work harder at the same time as the oil runs hotter.
Diagnosis and fitting
Wear in a gear pump is a loss of flow that grows with oil temperature. Test hot, not cold, and always after cleaning the cores and checking the oil level, the suction strainer and the return filter. Measure outlet flow and pressure against the machine specification rather than against another machine of the same badge. Our 油圧ファンポンプ診断ガイド covers the sequence.
On fitting: match shaft form, pilot, flange, port positions and rotation direction against the removed pump, since gear pumps are direction-sensitive and a reversed unit starves itself immediately. Prime the casing with clean oil before cranking, change the return filter element, keep the case drain unrestricted to tank, and target ISO 4406 18/16/13 for the piston components sharing the circuit.
ご注文
Minimum order one piece. Three to six month warranty on new aftermarket units as stated on your proforma invoice; bench checked and photographed against your order before the wooden case closes, delivery 5 to 8 working days from payment subject to stock. The range sits under 油圧ギヤポンプ および Volvo hydraulic fan motor, 、 シールキットのリビルドチェックリスト covers what a proper hydraulic repair includes.
