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CLIP 0004737 - Caterpillar

0004737 CLIP Caterpillar parts CLIP
Alternative (cross code) number:
Caterpillar 0004737 CLIP

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Illustration 1 g01013584
Charge relief valve
(1) Supply passage for charge oil from the charge pump
(2) Passage to case drain
(3) Passage
(4) Port
(5) Spring
(6) Spring chamber
(7) Spring retainer
(8) Seating surface of poppet
(9) Poppet Charge oil flows from the hydraulic oil filter through passage (1) to passage (3). The oil flows from passage (3) through port (4) to poppet (9). When the pressure against surface (8) of poppet (9) overcomes the force of spring (5), poppet (9) moves to the left and the poppet pushes spring retainer (7) against the force of spring (5). Oil flows past poppet (9) into spring chamber (6). Then, the oil flows from spring chamber (6) through passage (2) to the case drain of the piston pump.Poppet (9) oscillates as the flow of charge oil fluctuates in order to maintain a constant pressure for the charge oil.

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