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BRACKET AS 3904918 - Caterpillar



3904918 BRACKET AS Caterpillar parts C15 I6, C18 I6 BRACKET
Rating:
15
Alternative (cross code) number:
CA3904918
390-4918
3904918
Caterpillar 3904918 BRACKET AS
Weight: 30 pounds 13 kg.

Buy BRACKET AS 3904918 Caterpillar genuine, new aftermarket tractor parts with delivery
GENERATOR SET,

Compatible equipment models: 3904918:

GENERATOR SET  C15 I6   C18 I6   Caterpillar
Number on catalog scheme: 1
 
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Information:


Illustration 1 g02479018
Pressure circuit for SWING RIGHT operation (partial schematic - with fine swing)
(1) Passage (supply oil)
(2) Makeup port
(3) Relief valve
(4) Passage
(5) Motor rotary group
(6) Swing motor
(7) Passage (return oil)
(8) Relief valve
(9) Passage
(10) Makeup line
(11) Check valve
(12) Port (supply oil)
(13) Port (return oil)
(14) Check valve
(15) Check valve
(16) Return line
(17) Swing control valve
(18) Slow return check valve
(19) Return line
Illustration 2 g02479136
Pressure circuit for SWING RIGHT operation (partial schematic - without fine swing)
(1) Passage (supply oil)
(2) Makeup port
(3) Relief valve
(4) Passage
(5) Motor rotary group
(6) Swing motor
(7) Passage (return oil)
(8) Relief valve
(9) Passage
(10) Makeup line
(11) Check valve
(12) Port (supply oil)
(13) Port (return oil)
(14) Check valve
(15) Check valve
(16) Return line
(17) Swing control valve
(18) Slow return check valve
(19) Return line
Illustration 3 g00773573
Swing motor
(2) Makeup port
(3) Relief valve
(6) Swing motor
(8) Relief valve
(10) Makeup line
Illustration 4 g01231050
Swing relief valve
(4) Return passage
(7) Passage
(20) Orifice
(21) Spring
(22) Stem
(23) Piston chamber
(24) Passage
(25) Piston
(26) Passage
(27) Piston chamber
(28) Orifice
(29) Passage
(30) Adjustment plug Relief valves (3) and (8) are located in the head of swing motor (6). These relief valves limit the pressure in the left and right swing circuits to the swing relief valve setting. The pressure limit provides a cushion effect at a start or stop of the swing operation.When the swing joystick is returned to the NEUTRAL position during the swing right operation, the swing control valve shifts to the NEUTRAL position. Since the swing control valve is in the NEUTRAL position, the oil delivery through port (12) to the motor rotary group (5) is now blocked at the swing control valve. The return oil from the motor rotary group through port (13) is also blocked at the swing control valve.The mass (weight and size) of the upper structure causes the upper structure to attempt to continue to rotate after the swing joystick is returned to the NEUTRAL position. The motor rotary group is also attempting to continue to rotate. The motor rotary group attempts to draw oil through port (12) and attempts to displace the oil through port (13).The oil supply to motor rotary group (5) is insufficient. A vacuum condition occurs in passage (1). Return oil is supplied to the motor rotary group as makeup oil in order to prevent the vacuum condition. For more information concerning the makeup operation, refer to Systems Operation, "Oil Makeup (Swing System)". Since the flow of return oil from the motor rotary group through port (13) is blocked at the swing control valve, the pressure of the blocked oil in passage (7) increases. The increased oil pressure in passage (7) acts on swing relief valve (8). The increased pressure oil forces stem (22) of relief valve (8) to the right (open position) against the force of spring (21). When stem (22) shifts, oil flows through passage (9), check valve (11), and passage (1) to motor rotary group (5). The shock load is absorbed at the stop of a swing movement.At swing relief valve (8), the increased oil pressure in passage (7) flows through orifice (20) in stem (22) and passage (26) to piston chamber (27).

Caterpillar parts catalog:

Caterpillar parts catalog
C15 Lean I6 Generator Set NAP00001-UP
C18 Lean I6 Generator Set NAW00001-UP


Parts bracket Caterpillar catalog:

1152353 BRACKET-TUBE
16G, 16H NA, 3406B, 3406C, 3406E, 3456, 583T, 587T, 621B, 621E, 621F, 621G, 623E, 623F, 623G, 627E, 627F, 627G, 814B, 824C, 824G, 825G, 826C, 826G, 980C, 980F, 980G, AD30, C-15, C-16, C15, C15 I6, C16...
3718146 BRACKET
3406C, C15, C15 I6, C18, C18 I6, C9
2881023 BRACKET-SUPPORT
16M, 24M, 824H, 825H, 826H, 834H, 836H, 980G, 980H, 988H, C11, C13, C15, C15 I6, C18, C18 I6, CX31-C13I, RM-500
3458404 BRACKET-SUPPORT
C15, C15 I6, C18, CX31-C18I, CX35-C18I
4253590 BRACKET
C15 I6, C18 I6
3745715 BRACKET
C15 I6, C18 I6
4162065 BRACKET
C15 I6, C18 I6
4162062 BRACKET
C15 I6, C18 I6
3904911 BRACKET
C15 I6, C18 I6, C9
3904923 BRACKET
C15 I6, C18 I6, C9
3904871 BRACKET AS
C15 I6, C18 I6, C9
4183955 BRACKET
C15 I6, C18 I6, C9
4183953 BRACKET
C15 I6, C18 I6
4169018 BRACKET
C15 I6, C18 I6, C9
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