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COUPLING AS- 3236208 - Caterpillar

3236208 COUPLING AS- Caterpillar parts COUPLING
Alternative (cross code) number:
Caterpillar 3236208 COUPLING AS-
Weight: 0.23 pounds 0 kg.

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Illustration 1 g06059533
Right Side of Machine
(1) Tamper pump
(2) Pressure compensator and flushing spools
(3) Tamper solenoidTamper pump (1) is part of the lower left pump stack, splined to the right hand propel pump. The hopper doors provide access to the tamper pump.The tamper pump is an axial piston pump with a variable displacement. Pump displacement is controlled by tamper solenoid (3). The tamper solenoid provides proportional control of the pump displacement. The tamper solenoid is controlled by the screed ECM.Tamper pump (1) is equipped with pressure compensator and flushing spools (2). The pressure compensator spool limits the maximum pump supply pressure to 26000 kPa (3771 psi). The flushing spool directs some pump supply oil into the pump case when the pump output pressure is low.
Illustration 2 g06058661
Pump Cross-section
(2) Pressure compensator and flushing spools
(3) Tamper solenoid
(4) Bias spring
(5) Swashplate
(6) Displacement piston
(7) Large feedback spring
(8) Displacement control spool
(9) Small feedback spring
(10) Input shaft
(11) Slipper pads
(12) Piston
(13) Barrel assembly
(14) Port plate
(15) Supply passage
(16) Control passage
(17) Case drain passage
(18) PlungerThe cross-sectional view (illustrated above) of the tamper pump shows the major pump components. When the tamper pump is at rest, bias spring (4) forces swashplate (5) to the maximum angle. Engine rotation turns pump input shaft (10). The rotation of the shaft rotates the rotating group. The rotating group contains barrel assembly (13) and pistons (12). The pistons rotate with the barrel assembly. Piston slipper pads (11) allow the pistons to follow the angle of the swashplate.As slipper pads (11) follow the angle of swashplate (5), pistons (12) move in and out of barrel assembly (13). As a piston moves out of the barrel assembly, oil from the hydraulic tank is drawn into the piston chamber. As a piston moves into the barrel assembly, oil is forced through the outlet port in port plate (14). Oil is directed into supply passage (15) to displacement

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