Product Overview — 3900956
Overview
Replacement Part 3900956 is a commonly used spare part in construction machinery. We can supply all the original and replacement part numbers listed below, in stock or available on order — welcome to enquire by part number.
Applicable Models & Applications
On Cummins machines this component takes the same position, loading and service cycle as the part it replaces, which is why correct identification of the machine and serial number still matters before ordering. Suitable for the corresponding machine model and configuration — please verify the machine model, serial number and part number match before ordering.
Maintenance & Replacement
A tired unit often pulls the machine out of trim — higher forces, looser fits, extra play. Inspect this component at each service and replace it as soon as measurements or feel drift from spec, so the rest of the assembly keeps its designed behaviour. Early signs it may need attention: A machine that runs, but only after workarounds — flags, shims or extra torque — that mask a tired part; Inspections that show scoring, pitting, distortion or hardening on the working surfaces; Rising fuel or oil consumption, drifting pressures or inconsistent operation that this part controls.
Installation Essentials
Confirm the part number against your machine model and serial number before ordering. Work on a clean machine, with the engine off and the relevant system depressurised or drained first. Fit new seals, gaskets or O-rings and torque every fastener to the manual's figure. After installation, run the machine and check for leaks, unusual noise or abnormal travel before returning it to service, and retighten where the manual calls for it after the first hours of operation.
Reference Price
The reference price for this Replacement Part (listed under 3900956) is approximately USD 220 – 505 per unit, depending on configuration, quantity and shipping destination. This is an estimate for planning purposes — please confirm current pricing and availability with our sales team before ordering.
Available Part Numbers
- 3900956
Also in the Replacement Part Series
Same-series, real numbers we also supply (always confirm fit and interchange against your machine): 3900955, 3900687
Buy the right spare part the first time — Racer Machinery confirms fit against your machine before dispatch and backs every order with inspected, verified parts. Send your part number and model for live stock and pricing.
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