4I3667 ROD AS Caterpillar parts
320 L, 320N
Rating:
Alternative (cross code) number:
CA4I3667
4I-3667
4I3667
CA4I3667
4I-3667
4I3667
Weight: 153 pounds 69 kg.
EXCAVATOR,
Number on catalog scheme:
1
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Information:
Boom Priority
Illustration 5 g01029031
Hydraulic schematic for BOOM RAISE and STICK OUT (1) Boom cylinders (19) Pilot control valve (boom and grapple) (23) Pressure reducing valve for boom priority (40) Stick II control valve (41) Pilot control valve (stick and swing)During combined operations of BOOM RAISE and STICK OUT, the pilot oil pressure from the pilot control valve for the boom (19) activates the pressure reducing valve for boom priority (23). The pressure reducing valve for boom priority (23) causes oil flow priority to the head end of the boom cylinders (1) during this combined hydraulic operation.When the joystick for the stick is moved to the STICK OUT position, a portion of the pilot oil from the pilot control valve for the stick (41) flows through the pressure reducing valve for the boom priority (23) to the stick II control valve (40). As the joystick for the boom is moved farther from the NEUTRAL position during a BOOM RAISE operation, pilot oil pressure from the pilot control valve for the boom (19) increases. This gradual increase in pilot oil pressure causes the spool in the pressure reducing valve for the boom priority (23) to gradually shift.A portion of the pilot oil that flows to stick II control valve (40) from the pilot control valve for the stick (41) is routed to the hydraulic tank. The pilot oil pressure that acts on stick II control valve (40) decreases. Stick II control valve (40) shifts toward the NEUTRAL position. The amount of oil flow from the main pumps to the stick hydraulic circuit decreases. This causes a greater portion of the oil flow from the main pumps to flow to the head end of the boom cylinders (1) .Since the pilot oil pressure from the pilot control valve for the boom (19) directly corresponds to the amount of movement or position of the joystick a gradual change to boom priority occurs. Thus, boom priority is controlled by the position of the joystick for the boom and boom priority automatically activates when the joystick reaches a certain position during a BOOM RAISE operation.Boom Lower
Illustration 6 g01029043
Hydraulic schematic for BOOM LOWER (1) Boom cylinders (2) Line (oil flow to boom cylinder rod end) (3) Line (oil flow from boom cylinder head end) (11) Load check valve (13) Boom II control valve (14) Parallel feeder passage (15) Return passage (16) Boom I control valve (19) Pilot control valve (boom and grapple) (24) Idler pump (25) Drive pump (26) Pilot pump (27) Spring (40) Orifice (41) Boom regeneration valve (42) Port (43) Blocker Valve (44) Negative flow control line (45) Center bypass passage (46) Port (48) Valve (49) Passage (50) Drain line (51) Passage (52) Pilot line (53) Pilot lineDuring a BOOM LOWER operation, the oil delivery from only drive pump (25) is supplied to boom cylinders (1) through boom I control valve (16). Boom I control valve (16) operates alone. Boom II control valve (13) is not operational in the BOOM LOWER operation.The BOOM LOWER operation
Illustration 5 g01029031
Hydraulic schematic for BOOM RAISE and STICK OUT (1) Boom cylinders (19) Pilot control valve (boom and grapple) (23) Pressure reducing valve for boom priority (40) Stick II control valve (41) Pilot control valve (stick and swing)During combined operations of BOOM RAISE and STICK OUT, the pilot oil pressure from the pilot control valve for the boom (19) activates the pressure reducing valve for boom priority (23). The pressure reducing valve for boom priority (23) causes oil flow priority to the head end of the boom cylinders (1) during this combined hydraulic operation.When the joystick for the stick is moved to the STICK OUT position, a portion of the pilot oil from the pilot control valve for the stick (41) flows through the pressure reducing valve for the boom priority (23) to the stick II control valve (40). As the joystick for the boom is moved farther from the NEUTRAL position during a BOOM RAISE operation, pilot oil pressure from the pilot control valve for the boom (19) increases. This gradual increase in pilot oil pressure causes the spool in the pressure reducing valve for the boom priority (23) to gradually shift.A portion of the pilot oil that flows to stick II control valve (40) from the pilot control valve for the stick (41) is routed to the hydraulic tank. The pilot oil pressure that acts on stick II control valve (40) decreases. Stick II control valve (40) shifts toward the NEUTRAL position. The amount of oil flow from the main pumps to the stick hydraulic circuit decreases. This causes a greater portion of the oil flow from the main pumps to flow to the head end of the boom cylinders (1) .Since the pilot oil pressure from the pilot control valve for the boom (19) directly corresponds to the amount of movement or position of the joystick a gradual change to boom priority occurs. Thus, boom priority is controlled by the position of the joystick for the boom and boom priority automatically activates when the joystick reaches a certain position during a BOOM RAISE operation.Boom Lower
Illustration 6 g01029043
Hydraulic schematic for BOOM LOWER (1) Boom cylinders (2) Line (oil flow to boom cylinder rod end) (3) Line (oil flow from boom cylinder head end) (11) Load check valve (13) Boom II control valve (14) Parallel feeder passage (15) Return passage (16) Boom I control valve (19) Pilot control valve (boom and grapple) (24) Idler pump (25) Drive pump (26) Pilot pump (27) Spring (40) Orifice (41) Boom regeneration valve (42) Port (43) Blocker Valve (44) Negative flow control line (45) Center bypass passage (46) Port (48) Valve (49) Passage (50) Drain line (51) Passage (52) Pilot line (53) Pilot lineDuring a BOOM LOWER operation, the oil delivery from only drive pump (25) is supplied to boom cylinders (1) through boom I control valve (16). Boom I control valve (16) operates alone. Boom II control valve (13) is not operational in the BOOM LOWER operation.The BOOM LOWER operation
Caterpillar parts catalog:
Parts rod Caterpillar catalog:
1673C, 320 L, 3306, 3306C, D7G
311, 311B, 312, 312B, 315, 315B, 315B L, 315C, 317, 320 L, OEMS
307, 307B, 311, 311B, 312, 312B L, 315, 315B L, 317, 317B LN, 318B, 320 L, 320B, 322B L, 322B LN, 322C, 325, 325 L, 325 LN, 325B, 325B L, 330, 330 L, 330B L, 345B, 345B II, 345B L, 350, 350 L, 375, 37...
307, 308E SR, 312, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315, 317, 320 L, 322, 322 FM L, 325, 325 L, 325 LN, 330, 330 FM L, 330 L, 350, 350 L, 375, 375 L, 5080, 5130, 5130B, 5230, 5230B, 525B, 5...
315B FM L, 315C, 317B LN, 318B, 318C, 319C, 320 L, 320B, 320C, 320N, OEMS
0875317
ROD
312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 315C, 315D L, 316E L, 318D L, 318D2 L, 318E L, 319D, 319D L, 319D LN, 320 L, 320C, 320D FM RR, 320D LR...
312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 315C, 315D L, 316E L, 318D L, 318D2 L, 318E L, 319D, 319D L, 319D LN, 320 L, 320C, 320D FM RR, 320D LR...
311, 311B, 311C, 312B, 312C, 312C L, 314C, 318C, 319C, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN
311, 311B, 312B, 315, 320 L, 320B, 320N, 322 FM L, 322B L, 325, 325 L, 325 LN, 325B, 330, 330 FM L, 330 L, 345B II, 345B L
320 L, 320N, 325, 325 L, 325 LN, 330, 330 FM L, 350, 350 L, 5080
320 L, 320B, 320N, 325, 325 L, 325 LN, 325B L
5I4048
ROD AS
320 L, 325 L
320 L, 325 L
320, 320 L, 320N
7Y6645
ROD AS
320 L, 325, 325 L, 330B L, 330C L
320 L, 325, 325 L, 330B L, 330C L
5I4048
ROD AS
320 L, 325 L
320 L, 325 L
2688346
ROD
320C
320C
2629348
ROD
320C
320C
2449317
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321C
321C
2931792
ROD AS
321C
321C
1052596
ROD AS
322
322
1052587
ROD AS
322
322
320 L
320, 320 L, 320N
4I8876
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320 L, 320N
320 L, 320N
4I8872
ROD AS
320 L, 320N
320 L, 320N