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109-4591
109-4591 / 136-1679 / 145-8307 / 119-5717
OE-Equivalent Replacement Quality
IATF 16949 / ISO 9001 / CE / RoHS
50 pcs
7 - 15 Days
12 Months
109-4591 / 136-1679 / 145-8307 / 119-5717
Caterpillar engines and heavy equipment commonly cross-listed with the OE group; confirm machine serial number and removed valve.
Confirm voltage, connector, 3/4-16 UNF-2A thread, dimensions and A, B, C port logic before installation.
109-4591 is a two-position, three-way 24V hydraulic solenoid valve cross-listed with 136-1679, 145-8307 and 119-5717 for Caterpillar equipment. A 12V valve from the same family may have a similar housing but is not electrically interchangeable. Match the OE number, voltage marking, connector and dimensions before bulk ordering.
Specification | Confirmed Information |
Product Type | Two-position, three-way hydraulic solenoid valve |
Primary Reference | 109-4591 |
Common Cross References | 136-1679 / 145-8307 / 119-5717 |
Voltage | 24V DC for the 109-4591 configuration; 12V family variants are not electrically interchangeable. |
Thread | 3/4-16 UNF-2A |
Filtration | 25 micrometres or better |
Operating Temperature | -40 to +120 degrees Celsius |
Installation Torque | 34 to 37 Nm |
MOQ | 50 pcs |
Delivery Time | 7 - 15 Days |
Warranty | 12 Months |
Use the catalog drawing to compare cartridge dimensions, 3/4-16 UNF-2A thread, port layout and connector clearance with the removed valve before purchase approval.
Check the machine hydraulic schematic before installation because equipment port labels and operating commands can differ from the reference letters shown in the circuit.
Coil State | Catalog Flow Path | Buyer Check |
De-energized | B connected to A; C blocked | Match the original valve's normal position. |
Energized | B connected to C; A blocked | Verify the machine command and required switched function. |
Application listings help narrow the candidate part, while the removed valve and machine record remain the final fitment controls.
Review Area | Reference Information |
OE Group | 109-4591 / 136-1679 / 145-8307 / 119-5717 |
Common Engine References | Caterpillar 3116, 3126, 3304, 3306, 3176C and 3406E |
Common Machine References | D5M, D6M, D6R, D7R, D8R II, IT38F, IT38G, 924G, 938F, 938G, 515, 525, 535B, 545 and 793 series |
Approval Rule | Match the complete OE, voltage, connector, thread, dimensions, port logic and machine serial information. |
Approval Item | Required Evidence |
OE and Voltage | Complete old-valve reference and measured connector voltage |
Electrical Interface | Connector face, pin count, orientation and command state |
Mechanical Fit | Thread, body dimensions, sealing surface and installed clearance |
Hydraulic Function | De-energized and energized A, B, C port relationship |
Application | Machine or engine model, serial number and original hydraulic schematic where available |
Commercial Details | Quantity, destination, packing, labeling and inspection requirements |
The 109-4591 configuration is 24V. A 12V valve from the same family may have a similar housing, but it must not be treated as electrically interchangeable. Match the voltage marking on the removed valve and measure supply voltage at the connector before releasing a purchase order.
These references are commonly grouped with 109-4591, but a cross-reference is only the first approval step. Compare voltage, connector orientation, 3/4-16 UNF-2A thread, cartridge dimensions and A, B, C port logic with the removed valve. For fleet or distributor orders, keep the original equipment number, machine serial number and old-valve photos on the same approval record.
In the catalog circuit, B connects to A while C is blocked when the coil is de-energized. When energized, B connects to C while A is blocked. This describes the valve's switching relationship, not the machine-side hose names. Compare the equipment hydraulic schematic and the original cartridge orientation before commissioning the replacement.
Stop the machine and verify that the ordered valve has the same de-energized and energized flow paths as the original. Check cartridge orientation, port identification, connector command state and the machine schematic. A physically fitting valve can still produce the wrong function when its internal circuit or normal position differs from the removed part.
The thread controls how the cartridge seats and seals in the valve body. Verify diameter, pitch, thread form, sealing surface and installed depth rather than testing fit by force. The specified installation torque is 34 to 37 Nm, but the equipment service procedure and seal condition should be reviewed before final assembly.
Common checks include incorrect voltage, low connector voltage under load, high terminal resistance, contaminated hydraulic oil, a restricted cartridge and incomplete seating. The catalog calls for 25 micrometre or better filtration and an operating temperature range of -40 to +120 degrees Celsius. Correct the electrical or hydraulic cause before replacing another valve.
Send the complete OE reference, confirmed voltage, Caterpillar machine or engine model, serial number where available, clear photos of the old label and connector, cartridge measurements, required quantity, destination and packing requirement. Separate 12V and 24V demand on different order lines so technical approval, warehouse labels and repeat orders remain traceable.
Send the complete OE group, verified voltage, machine information, removed-valve photos, connector details, dimensions and required quantity for a fitment-focused B2B quotation.
