Massey Ferguson 527904M93 / MF #9 Tractor Hydraulic Gear Pump Replacement

Working back from the old part

The name 527904M93 / MF #9 is useful when matching a pump across parts listings. It does not by itself define shaft engagement, fastening dimensions or the installed hydraulic duty.

No specific tractor serial ranges are established here for 527904M93 / MF #9. Use the parts manual and existing hardware to complete the application check.

Technical specifications

Before fitting the replacement

Before removing 527904M93 / MF #9, mark each hydraulic hose with its original position and note how the drive coupling engages. Then check the condition of the drive teeth, mounting gasket and fasteners on the old unit.

Document any adaptor or hose changes so future replacements are not ordered against outdated dimensions.

Pump output versus circuit demand

The catalogue prints 6.0 ml/rev for this pump. When replacing it, avoid enlarging displacement on appearance alone: the input drive and relief protection were chosen around the original hydraulic demand.

Within the comparison set, MF-HEMA / MF #10 lists 5.0 ml/rev and 120 bar. That is a useful limit check for the 527904M93 / MF #9 hydraulic request, not permission to alter the tractor’s original pump rating.

Controlled flow is shown as 6.0 L/min for this listing. Its circuit function should be reviewed before specifying a valve or control setting.

The stated speed is 500–3600 rpm. Before commissioning, verify the engine accessory drive ratio and that normal operating conditions do not exceed this listing.

What must mate to the original pump

527904M93 / MF #9 is marked clockwise rotation. Identify the shaft end before interpreting the arrow and compare the actual pump drive direction with the equipment drawing.

Do not machine pipework from the illustration. The two connection callouts are feed NPT 3/8 and discharge NPT 1/4; check the physical unit first.

Same family, different pump

One comparison point is Massey Ferguson MF-HEMA / MF #10, where the record shows 5.0 ml/rev and 120 bar. The present 527904M93 / MF #9 specification (6.0 ml/rev, 120 bar) should be kept separate.

It is often worth checking the original pressure-line location before discussing any adapter or revised hose.

Complete the pump identification

Send model 527904M93 / MF #9, the quantity and one legible photo of the part mark. For interface review, add the drive-shaft profile, bolt spacing and a drawing of the port locations.

For serial-sensitive machines, an equipment parts-list extract is especially helpful.

What buyers ask about this model

What matters beyond the 527904M93 / MF #9 cross-reference?

Look for a matching shaft profile, mounting flange and pressure-side connection; a parts number alone cannot settle every revision.

Is the 6.0 L/min controlled-flow value the total pump flow?

Not necessarily; controlled-flow information is separate from geometric displacement and actual delivery.

Ordering, samples and shipping terms

Order quantities are set according to pump type and total order value. A small order of 1–2 pieces can be considered at a higher unit price; new customers may request 1–5 samples when the item is suitable. Mixed-model orders are available, normally with a combined order value of approximately USD 1,500.

Typical production schedules are 10–25 working days for standard items, 20–45 working days for customized components, and 45–120 working days for project equipment. Usual delivery terms are EXW, FOB, CIF and DAP. FCA, CFR, CPT, CIP and DDP can be discussed for specific shipments. Confirm the final schedule and terms with the quotation.