Part: 4634936 (also listed as 4634947 and 4659032) fan drive hydraulic motor for Hitachi Zaxis excavators, supplied here as Japanese-production original-equipment type stock.
What the unit in these photographs carries: a Parker Denison nameplate reading model M5BF 045, code 024-94578-0, serial 12L03 338, Made in France, with Deere-Hitachi cast numbers on the housing.
Condition and terms: origin Japan. As with all genuine and used items we sell, this grade is supplied without a warranty. If you need warranty cover, take the Chinese-made equivalent instead.
Part: 400702-00150A heavy-duty hydraulic cooling fan motor for Doosan / Develon DX700 and DX800 class excavators, with cast A and B port markings on the base block.
Supplied as: new aftermarket unit, HTD brand, made in China. MOQ 1 piece, wooden case, dispatch in 5 to 8 working days.
Order on evidence: the number cast on your housing and a rear photo of the port block. Port identity, not part number, is what decides whether the reverse-clean function still works.
Part: 300506-0007 / 300506-00006B hydraulic cooling fan motor for the Doosan DX700 LC excavator. Domed cast cover, twin mounting ears, long threaded shaft end.
Supplied as: new aftermarket unit, HTD brand, made in China. MOQ 1 piece, wooden case, dispatch in 5 to 8 working days.
Diagnostic tip: on the DX700 the fan speed command is electronic, so a heat complaint can come from the motor, the fan pump or the ED regulator valve. This page separates the three.
Part: 400702-00084 hydraulic cooling fan motor for Doosan / Develon DX490 and DX530 excavators, also listed for DX380LC-3 and DX450LC-7M in trade catalogues.
Supplied as: new aftermarket unit, HTD brand, square four-bolt flange, splined shaft, rectangular side port block. MOQ 1 piece, wooden case, dispatch in 5 to 8 working days.
Failing early? Oil cleanliness is the variable you control. This page includes the ISO 4406 targets and a decision tree to run before ordering.
Application: cooling fan drive motor for Doosan / Develon DX520 and DX520LC excavators, domed cast housing with twin base ports.
Supplied as: new aftermarket unit, HTD brand, made in China. MOQ 1 piece, wooden case, dispatch in 5 to 8 working days.
Note on part numbers: DX520 machines in the field carry more than one fan motor variant. This listing is the domed-housing unit, matched from photographs and measurements rather than from a stamped number.
Part: K1057295 hydraulic fan motor for the cooling fan drive on Doosan / Develon DX380, DX420, DX500 and DX520 excavators.
Supplied as: new aftermarket unit, HTD brand, made in China. Splined shaft, square four-bolt mounting flange and port orientation matched to the original. MOQ 1 piece, wooden case, dispatch in 5 to 8 working days.
Check before ordering: the number cast on your old motor housing and the flange bolt pattern. Trade catalogues overlap this part with 300506-0007 across generations.
Part: 266-8034 hydraulic fan motor for CAT 345C excavators with the C13 engine. Caterpillar lists this number as a hydraulic fan slipper piston motor.
Role: it is the motor, not the pump. The 345C fan pump is a separate part, commonly listed as 259-0814.
Supplied as: replacement unit, bench tested, wooden case, MOQ 1 piece, dispatch 5 to 8 working days.