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3E-3748
3E-3748
OE-Equivalent Replacement Quality
IATF 16949 / ISO 9001 / CE / RoHS
50 pcs
7 - 15 Days
12 Months
3E-3748
Caterpillar equipment listed for official 3E-3748 valve group
Confirm 24v, connector, 1-1/16-12 cartridge with lead connector, seals and hydraulic circuit before installation.
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3E-3748 is a 24V two position three way hydraulic solenoid valve group for Caterpillar equipment listed for official 3E-3748 valve group. Buyers should confirm the complete old marking, electrical version, connector, 1-1/16-12 cartridge with lead connector and hydraulic function before approving replacement stock.
Specification | Value |
|---|---|
Product Type | Two Position Three Way Hydraulic Solenoid Valve Group |
Primary Reference | 3E-3748 |
Cross References | 3E-3748 |
Electrical Version | 24V |
Working Pressure Reference | 350 bar |
Interface | 1-1/16-12 cartridge with lead connector |
Application Scope | Caterpillar equipment listed for official 3E-3748 valve group |
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 | 3E-3748 |
Electrical | 24V; verify at the loaded connector during the actual command |
Mechanical | Compare 1-1/16-12 cartridge with lead connector, cartridge length, seals and installed clearance |
Hydraulic | Confirm normal state, energized state and manifold port relationship |
Machine Evidence | Caterpillar equipment listed for official 3E-3748 valve group |
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 service team tests the de-energized state, keep the verified reference, measurements and test result in the service record. Approve 3E-3748 from the complete old valve marking, 24v electrical version, connector keying, 1-1/16-12 cartridge with lead connector, 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 machine serial range cannot be confirmed, 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 export packing is approved, 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 customer reports reversed machine response, 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. Serial number evidence is essential whenever the same equipment family used more than one pump, manifold or electrical harness. Use it with the parts diagram rather than as a substitute for physical checks. If the old valve label is damaged, collect connector, mounting, cartridge and installed location photos so the application can be narrowed without guessing from the machine name alone.
During a valve switches slowly after oil warms, keep the verified reference, measurements and test result in the service record. Treat every suffix as an engineering identifier until its meaning is proven. A suffix can change voltage, connector, spring calibration, spool geometry or mounting details while the base model remains similar. Keep the complete old marking on the quotation and do not shorten 3E-3748 in purchasing records. Accept a cross reference only after dimensional, electrical and hydraulic checks agree.
During a dealer parts counter checks an old sample, keep the verified reference, measurements and test result in the service record. Measure voltage across the coil while the controller commands the valve, then measure the positive and ground side drops separately. A static open circuit reading can look normal while a corroded terminal collapses under load. Compare the result with the confirmed 24v requirement and repair excessive resistance before judging the two position three way hydraulic solenoid valve group itself as defective.
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.
