5P9321 FRONT STRUCTURE Caterpillar parts
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Alternative (cross code) number:
CA5P9321
5P-9321
5P9321
CA5P9321
5P-9321
5P9321
Weight: 1 pounds 0 kg.
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Front Cover Housing Gasket Set 5P9321 for Caterpillar 1674 Engine
N\\C Part Number: 5P9321 || Applicable Models: for Caterpillar 1674 Engine || Warranty: 1 Year. || TIPS: Please be sure to compare carefully with photos and check part number before buying items, If you are not sure this part is suitable, please feel free to contact us, we'll reply you as soon as possible. || Delivery Time: We will ship the item to you by DHL/FedEx/USPS, which will arrive in 5-9 days once we ship it to you. The delivery time will not a month like which shown online, you could buy with confidence!
N\\C Part Number: 5P9321 || Applicable Models: for Caterpillar 1674 Engine || Warranty: 1 Year. || TIPS: Please be sure to compare carefully with photos and check part number before buying items, If you are not sure this part is suitable, please feel free to contact us, we'll reply you as soon as possible. || Delivery Time: We will ship the item to you by DHL/FedEx/USPS, which will arrive in 5-9 days once we ship it to you. The delivery time will not a month like which shown online, you could buy with confidence!
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Lock Valve for the Telescoping Cylinder
Illustration 3 g00941430
(13) Lock Valve for the Telescoping CylinderThe lock valve for the telescoping cylinder is screwed directly into the manifold block at the head end of the telescoping cylinder. the lock valve provides the following functionality:
Maintain the desired extension of the boom within the limits of drift that are defined by the specification of the valve.
Prevent overrun of the boom while the boom is being retracted.
Prevent the boom from retracting in the event of a burst hose.The lock valve includes a check valve and a counterbalance valve.
Illustration 4 g00941431
Lock Valve for Telescoping Cylinder (Boom Retract) (13) Lock valve (14) Passage (head end) (15) Telescoping cylinder (16) Chamber (17) Passage (18) Adjusting screw (19) Passage (rod end) (20) Passage (drain) (21) Passage (22) Counterbalance valve (23) Check valve (24) SpringThe following section describes the operation of the lock valve when the boom is retracted.Oil from the implement control valve flows directly to the rod end of telescoping cylinder (15) through passage (19). The pressure that is developed in the rod end of the telescoping cylinder is transmitted to passage (17). The pressure overcomes the force of spring (24), and counterbalance valve (22) opens at a controlled rate and rests against the valve stop.Oil from the head end of the telescoping cylinder flows through the counterbalance valve into passage (21) in order to allow the telescoping cylinder to retract. The oil is returned to the hydraulic tank through the implement control valve. The pressure that acts on the valve stem will determine the retracting speed of the telescoping cylinder. The clearance at the valve seat varies in proportion to the pilot pressure. This controls the oil flow from the telescoping cylinder which controls the speed of the telescoping cylinder.When pressure at the rod end of the telescoping cylinder is reduced, pressure is also reduced in passage (17). Pressure in passage (17) is relieved until the valve stem in counterbalance valve (22) is seated. Oil in the head end of the telescoping cylinder is prevented from returning to the hydraulic tank at counterbalance valve (22), and the telescoping cylinder stops retracting.The following section describes the operation of the lock valve when the boom is in the HOLD position. Oil is blocked in the head end of the telescoping cylinder by the valve stem in counterbalance valve (22). The valve stem is seated by the force of spring (24). The weight of the boom and the weight of the load creates pressure in the piston side of the telescoping cylinder which is transmitted through chamber (16) to the face on the valve stem. This pressure is resisted by spring (24) which is acting against the valve stem.Under shock load, spring (24) would compress slightly. This would allow the valve stem to move in order to relieve any excess pressure from the piston side of the telescoping cylinder.The following section describes the operation of the lock valve when the boom is extended.Oil from the implement control valve flows through
Illustration 3 g00941430
(13) Lock Valve for the Telescoping CylinderThe lock valve for the telescoping cylinder is screwed directly into the manifold block at the head end of the telescoping cylinder. the lock valve provides the following functionality:
Maintain the desired extension of the boom within the limits of drift that are defined by the specification of the valve.
Prevent overrun of the boom while the boom is being retracted.
Prevent the boom from retracting in the event of a burst hose.The lock valve includes a check valve and a counterbalance valve.
Illustration 4 g00941431
Lock Valve for Telescoping Cylinder (Boom Retract) (13) Lock valve (14) Passage (head end) (15) Telescoping cylinder (16) Chamber (17) Passage (18) Adjusting screw (19) Passage (rod end) (20) Passage (drain) (21) Passage (22) Counterbalance valve (23) Check valve (24) SpringThe following section describes the operation of the lock valve when the boom is retracted.Oil from the implement control valve flows directly to the rod end of telescoping cylinder (15) through passage (19). The pressure that is developed in the rod end of the telescoping cylinder is transmitted to passage (17). The pressure overcomes the force of spring (24), and counterbalance valve (22) opens at a controlled rate and rests against the valve stop.Oil from the head end of the telescoping cylinder flows through the counterbalance valve into passage (21) in order to allow the telescoping cylinder to retract. The oil is returned to the hydraulic tank through the implement control valve. The pressure that acts on the valve stem will determine the retracting speed of the telescoping cylinder. The clearance at the valve seat varies in proportion to the pilot pressure. This controls the oil flow from the telescoping cylinder which controls the speed of the telescoping cylinder.When pressure at the rod end of the telescoping cylinder is reduced, pressure is also reduced in passage (17). Pressure in passage (17) is relieved until the valve stem in counterbalance valve (22) is seated. Oil in the head end of the telescoping cylinder is prevented from returning to the hydraulic tank at counterbalance valve (22), and the telescoping cylinder stops retracting.The following section describes the operation of the lock valve when the boom is in the HOLD position. Oil is blocked in the head end of the telescoping cylinder by the valve stem in counterbalance valve (22). The valve stem is seated by the force of spring (24). The weight of the boom and the weight of the load creates pressure in the piston side of the telescoping cylinder which is transmitted through chamber (16) to the face on the valve stem. This pressure is resisted by spring (24) which is acting against the valve stem.Under shock load, spring (24) would compress slightly. This would allow the valve stem to move in order to relieve any excess pressure from the piston side of the telescoping cylinder.The following section describes the operation of the lock valve when the boom is extended.Oil from the implement control valve flows through
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