1986963C1 / 9 cc: 9.0 ml/rev, 140 bar, anticlockwise (CCW). Flexible MOQ by model and order value; 1–2 pcs can be considered at a higher unit price.
Reference 1986963C1 identifies a 9 ml/rev anticlockwise John Deere pump and also lists 05104153. The 140 bar rating, 500–3000 rpm range and 20 mm/15 mm holes distinguish it from the higher-capacity RE73947 assembly. Confirm whether the removed unit is the single-section style shown here.
Before treating 1986963C1 as an interchangeable spare, compare the inlet-side and discharge-side hardware. Different bodies can share a family reference without sharing every connection.
No specific tractor serial ranges are established here for 1986963C1 / 9 cc. Use the parts manual and existing hardware to complete the application check.
| Reference / model | 1986963C1 / 9 cc |
|---|---|
| Product type | Tractor Hydraulic Gear Pump |
| Original reference numbers | 1986963C1; 05104153 |
| Applicable tractor models | Confirm from original pump / equipment parts list |
| Manufacturer reference | Not provided |
| Nominal displacement | 9.0 ml/rev |
| Maximum pressure | 140 bar |
| Rotational speed | 500–3000 rpm |
| Controlled flow rate | 6.0 L/min |
| Feed hole / connection | Ø20 |
| Discharge hole / connection | Ø15 |
| Rotation | anticlockwise (CCW) |
John Deere RE73947 / 30+14 cc can serve as a useful control example while sorting this catalogue family. Its 250 bar listing should not be transferred to 1986963C1 / 9 cc, for which the recorded value is 140 bar.
If the machine has been modified, the fitted pump is more useful evidence than a legacy tractor model number.
For the stated 9.0 ml/rev pump, the hydraulic system remains the limiting context. Mechanical fit alone is not a test of working flow or acceptable drive load.
Within the comparison set, RE73947 / 30+14 cc lists 30/14 ml/rev and 250 bar. That is a useful limit check for the 1986963C1 / 9 cc 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 500–3000 rpm. Before commissioning, verify the engine accessory drive ratio and that normal operating conditions do not exceed this listing.
An installation review should include oil grade, tank venting and relief valve condition for 1986963C1 / 9 cc. If the previous pump failed from starvation or high pressure, replacement alone will not remove the cause.
An incorrectly seated shaft coupling may damage both drive and pump even at light load.
The selection should rule out the opposite drive hand at the outset: 1986963C1 / 9 cc is CCW. Do not rotate a directional unit backwards to make its fittings line up.
Ø20 and Ø15 are the recorded feed/discharge connection values. A mistaken swap between inlet and pressure ports should be resolved on the bench.
Drive rotationCCW
Displacement9.0 ml/rev
Connection checkØ20 / Ø15
A useful request specifies 1986963C1 / 9 cc by OEM reference and includes the hydraulic system’s working duty. Supply the exact rotation convention and two views of the pump body.
Replacement evaluations can proceed faster when photographs show all sides rather than only the top cover.
Only after confirming the actual port thread or bore, sealing system and clearance. Do not assume an adapter makes a mechanically wrong pump correct.
The comparison shows 30/14 ml/rev for the other part and 9.0 ml/rev here; rotation and mechanical interfaces must also be checked.
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.
Third-party brand names and trademarks are used only for product identification and cross-reference. They remain the property of their respective owners; such references do not imply affiliation, sponsorship, authorization or endorsement.
Send the old pump reference, quantity, photos and interface measurements to our sales team.
sales@netherlandsdrive.com
| OEM |
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