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Caterpillar oil pumps

The Caterpillar oil pump is designed to create pressure in the lubrication system, and thus lubricate the moving parts of the internal combustion engine.

The Caterpillar oil pump is driven by a Caterpillar crankshaft or Caterpillar camshaft by means of a drive shaft.Caterpillar oil pumps

By the nature of the control oil pumps are divided into uncontrolled and adjustable. Unregulated pumps maintain a constant pressure in the lubrication system by means of a pressure reducing valve. In controlled pumps, the constant pressure is maintained by changing the pump capacity. Depending on the design, oil pumps are distinguished for gear and rotary pumps.

Caterpillar gear oil pump is a two-pinion gear - the driving and slave, housed in the body. Oil enters the pump through the suction channel, is captured by gears and injected into the system through the discharge channel. The output of the gear pump is proportional to the speed of the crankshaft. When the discharge oil pressure exceeds a certain value, the pressure relief valve operates and passes a part of the oil into the suction cavity or directly into the crankcase of the engine.

The rotary oil pump combines two rotors - the internal (master) and external (slave), which are placed in the housing. The oil is sucked into the pump, captured by rotor blades and injected into the system. Just like in the gear pump, if necessary, the pressure relief valve works. The design has an uncontrolled rotary pump.

A more refined design is the Caterpillar adjustable rotary oil pump, which provides constant pressure over the entire speed range of the crankshaft.

Principle of operation of an adjustable rotary pump

When the engine speed of the Caterpillar engine is increased, the need for oil increases and, accordingly, the pressure drops in the system. With the pressure drop, the adjusting spring moves the stator, which in turn changes the position of the driven rotor. Accordingly, the volume of the suction cavity is increased and the productivity of the pump is increased.

When the engine speed is reduced, the oil consumption decreases and the system pressure is increased. By increasing the pressure, the adjusting spring is compressed, which moves the Caterpillar stator and changes the position of the driven rotor. This leads to a reduction in the volume of the suction cavity and a decrease in the productivity of the Caterpillar pump.

All necessary Caterpillar parts in our online Caterpillar parts store - Heavy Equipment Spare Parts

Short list below:

0934422 - PUMP,OIL AS  4W4598 - OIL PUMP G  1U9764 - OIL VAC PUMP 0R2733 - OIL PUMP REM
0947187 - PUMP,OIL AS  6I9082 - GEAR OILPUMP 1W2206 - PUMP GP-OIL 0R2761 - OIL PUMP G
0947960 - PUMP,OIL AS  6N1030 - PUMP G OIL 2081355 - PUMP KIT-OIL 0R2763 - OIL PUMP G
0947962 - PUMP,OIL AS  6N2450 - OIL PUMP G  2170437 - PUMP-OIL  0R2767 - OIL PUMP G
0959158 - OIL PUMP  6N2460 - OIL PUMP G 2180248 - PUMP-OIL  0R2770 - OIL PUMP G
0961503 - OIL PUMP A  6N2603 - OIL PUMP G 2316345 - PUMP KIT-OIL 0R2826 - OIL PUMP
1003244 - PUMP AS OIL  6N2790 - OIL PUMP G  2316349 - PUMP KIT-OIL 0R9057 - PUMP GP OIL
1131141 - PUMP A OIL 6N2792 - OIL PUMP G  2706235 - PUMP GP-OIL  0R9250 - PUMP GP OIL
1347615 - PUMP AS-OIL  6N2793 - OIL PUMP G  2708992 - PUMP KIT-OIL 3N8187 - OIL PUMP G
1398036 - PUMP GP-OIL  6N2795 - OIL PUMP G  2803753 - PUMP AS-OIL  3N9812 - OIL PUMP A
1561248 - PUMP GP-OIL 6N2800 - OIL PUMP G  2825202 - PUMP KIT-OIL 5N3794 - OIL PUMP G
1730141 - PUMP AS-OIL 6N2801 - OIL PUMP G  2825213 - PUMP KIT-OIL 9U5171 - OIL PUMP
1854772 - VAC PUMP OIL 6N2815 - OIL PUMP G  2828568 - PUMP AS-OIL 0R9697 - PUMP GP OIL
1889071 - PUMP AS-OIL 6N2872 - OIL PUMP G  2975897 - PUMP KT-OIL  0R9450 - PUMP GP OIL
1908487 - VAC OIL PUMP 6N5723 - PUMP GRP OIL 2P7830 - OIL PUMP GR  0R9449 - PUMP GP OIL
1958435 - PUMP AS-OIL 7E4515 - PUMP A OIL  3124545 - PUMP-OIL 0R9448 - PUMP GP OIL
1972031 - PUMP-OIL  9S4384 - GEAR-OILPUMP 3154678 - PUMP AS-OIL 0R2236 - PUMP GP OIL
1972033 - PUMP-OIL  9S6788 - OIL PUMP G  3180304 - PUMP-OIL  10R0428 - PUMP GP OIL
1992233 - PUMP AS-OIL 0R0920 - PUMP G OIL 3451965 - PUMP-OIL-CLA 10R1001 - PUMP GP. OIL
1M7037 - PUMP GP-OIL 0R1520 - PUMP GP-OIL 3542602 - PUMP-OIL  10R2296 - PUMP GP OIL
1N9930 - TEE-OIL PUMP 0R2560 - OIL PUMP 3H3093 - PUMP GP-OIL 10R1984 - PUMP AS OIL
1R5949 - PUMP OIL A  0R2561 - OIL PUMP 4N8735 - OIL PUMP G  10R2130 - PUMP GP OIL
1U9763 - OIL VAC PUMP 0R2562 - OIL PUMP 4W4544 - OIL PUMP G  10R7557 - PUMP AS OIL


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