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279-6528
279-6528
OE-Equivalent Replacement Quality
IATF 16949 / ISO 9001 / CE / RoHS
50 pcs
7 - 15 Days
12 Months
279-6528
Caterpillar equipment officially associated with 279-6528
Confirm 24v, connector, 1-1/16-12 cartridge shown, seals and hydraulic circuit before installation.
| Quantity: | |
|---|---|
279-6528 is a 24V pilot operated two position two way solenoid valve for Caterpillar equipment officially associated with 279-6528. Buyers should confirm the complete old marking, electrical version, connector, 1-1/16-12 cartridge shown and hydraulic function before approving replacement stock.
Specification | Value |
|---|---|
Product Type | Pilot Operated Two Position Two Way Solenoid Valve |
Primary Reference | 279-6528 |
Cross References | 279-6528 |
Electrical Version | 24V |
Working Pressure Reference | Confirm from official parts data |
Interface | 1-1/16-12 cartridge shown |
Application Scope | Caterpillar equipment officially associated with 279-6528 |
MOQ | 50 pcs |
Delivery Time | 7 to 15 Days |
Warranty | 12 Months |
Use the original catalog dimensional reference and hydraulic symbol to compare the valve with the removed component and the machine schematic before purchase approval.
Complete every control point below before a sample or bulk order is released.
Approval Point | Buyer Review |
|---|---|
Reference | 279-6528 |
Electrical | 24V; verify at the loaded connector during the actual command |
Mechanical | Compare 1-1/16-12 cartridge shown, cartridge length, seals and installed clearance |
Hydraulic | Confirm normal state, energized state and manifold port relationship |
Machine Evidence | Caterpillar equipment officially associated with 279-6528 |
Separate electrical command, cartridge movement and machine response so the actual wiring or hydraulic fault is not hidden by a parts replacement.
Observed Condition | Recommended Check |
|---|---|
No movement | Check loaded connector voltage, ground, controller command and coil resistance. |
Slow response | Inspect oil cleanliness, filter condition, viscosity and cartridge movement. |
Reversed response | Stop operation and compare normal and energized port logic with the original valve. |
External leakage | Inspect seals, cartridge surface, manifold bore and correct seating depth. |
Repeated heating | Confirm voltage, duty cycle, connector resistance and full magnetic movement. |
During a hydraulic schematic differs from the catalog port letters, keep the verified reference, measurements and test result in the service record. Approve 279-6528 from the complete old valve marking, 24v electrical version, connector keying, 1-1/16-12 cartridge shown, sealing lands and normal hydraulic state. A shared equipment model does not prove interchangeability because pump and manifold revisions can change during production. Send the machine model, serial number and clear removed part photos with the inquiry.
During a repeat coil heating case is investigated, keep the verified reference, measurements and test result in the service record. Read the coil label first and measure voltage at the connector while the real machine command is active. The working reference for this page is 24V. Do not infer voltage only from battery count because converters, harness changes and mixed voltage fleets can create misleading assumptions. Record the verified value on the purchase order and incoming inspection label.
During a valve switches slowly after oil warms, keep the verified reference, measurements and test result in the service record. Two valves can share a coil diameter and connector yet use different cartridge lengths, metering notches, spring forces or port logic. In Caterpillar service, compare the full reference, manifold bore, installed depth, connector direction and hydraulic symbol. A valve that screws in but routes pressure differently can create weak response, reversed motion or continuous pump loading.
During a first article sample is reviewed, keep the verified reference, measurements and test result in the service record. Measure supply and ground at the loaded connector, then check coil resistance and verify that the controller is actually issuing the command. If electrical input is correct, inspect oil cleanliness, filter condition, cartridge movement and manifold contamination. Separate electrical command from hydraulic response before replacing another valve, otherwise a harness or blocked pilot passage may be missed.
During an electrical voltage drop is found, keep the verified reference, measurements and test result in the service record. Verify commanded voltage under load, coil duty cycle, connector resistance and whether the hydraulic element reaches its intended position. Low voltage can prevent full magnetic pull, while excessive voltage or continuous energization can overheat the winding. Contamination that restricts cartridge movement can also increase operating stress, so correct the electrical or hydraulic root cause before fitting another coil.
During a distributor separates similar suffix variants, keep the verified reference, measurements and test result in the service record. Reuse is not recommended when the service procedure specifies new seals or the old rings show flattening, cuts or heat damage. Confirm material compatibility with the hydraulic oil, clean the 1-1/16-12 cartridge shown and inspect the manifold bore for scoring. Lubricate and install seals without twisting, then follow the equipment torque procedure instead of forcing the cartridge past resistance.
During a service team tests the de-energized state, keep the verified reference, measurements and test result in the service record. Keep ports capped, seals protected and connector faces free from moisture or impact. Separate 24v and suffix variants with readable carton labels so warehouse picking cannot mix them. Store the valves in a clean, dry area away from welding dust and corrosive chemicals, and retain lot traceability to the approved sample and incoming inspection record.
Send the complete old valve marking, confirmed voltage, machine model and serial number, connector photos, interface dimensions and required quantity for a fitment focused B2B quotation.
