METER GP-SERVICE 3N1589 - Caterpillar

3N1589 METER GP-SERVICE Caterpillar parts D379, D379A, D379B, D398, D398A, D398B, D399, G379, G398, G399

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Alternative (cross code) number:
CA3N1589
3N-1589
3N1589

Weight: 0.05 pounds 0 kg.

Buy METER GP-SERVICE 3N1589 Caterpillar genuine, new aftermarket tractor parts with delivery
GAS ENGINE, MARINE ENGINE,

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#1380221 3n-1589

2024-06-26

Compatible equipment models: 3N1589:

GAS ENGINE G379 G398 G399

GEN SET ENGINE D379B D398B D399

INDUSTRIAL ENGINE D379 D398 D399

MARINE ENGINE D379A D398A D399 Caterpillar

Number on catalog scheme:

Caterpillar 3N1589 Parts scheme METER GP-SERVICE

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Information:

Illustration 1 g02462176
Left pedal service brake control valve
The service brake control valve is located on the front left side, and underneath the operators platform.
Illustration 2 g00274835
Left pedal service brake control valve
(B) Service brake ports. (C) Pressure ports.
Illustration 3 g03648345
Service brake Valve not activated
View A-A of the service brake control valve
(1) Piston
(2) Spring
(3) Spring
(4) Retainer
(5) Ball
(6) Spacer
(7) Upper valve spool
(8) Outlet to rear service brake
(9) Outlet to hydraulic tank
(10) Passage
(11) Supply from accumulator for front service brakes
(12) Drain port to tank
(13) Upper valve spool passage
(14) Cavity
(15) Lower valve spool
(16) Plugged port
(17) Outlet to front service brakes
(18) Passage
(19) Lower valve spool passage.
(20) Supply from accumulator for the rear service brakes
(21) Cavity
(22) Spring
Illustration 4 g03648347
Service brake valve activated
View A-A of the service brake control valve
(1) Piston
(2) Spring
(3) Spring
(4) Retainer
(5) Ball
(6) Spacer
(7) Upper valve spool
(8) Outlet to rear service brake
(9) Outlet to hydraulic tank
(10) Passage
(11) Supply from accumulator for front service brakes
(12) Drain port to tank
(13) Upper valve spool passage
(14) Cavity
(15) Lower valve spool
(16) Plugged port
(17) Outlet to front service brakes
(18) Passage
(19) Lower valve spool passage.
(20) Supply from accumulator for the rear service brakes
(21) Cavity
(22) Spring The service brake control valve modulates the flow of pressurized oil. The flow of pressurized oil is modulated between the brake accumulators and the service brakes. The position of either brake pedal causes a specific pressure at the service brakes. As the position of the pedal changes, the pressure at the service brakes also changes.When one of the brake pedals is depressed, a roller in the brake pedal assembly pushes down on piston (1). Piston (1) applies a force on springs (2) and (3). The force of springs (2) and (3) moves retainer (4) and ball (5). Movement of retainer (4) and ball (5) causes upper valve spool (7) to move away from the seat in spacer (6).The movement of upper valve spool (7) causes the movement of lower valve spool (15) and the compression of spring (22). When valve spools (7) and (15) move, the oil flow through passages (10), (12), and (18) to the hydraulic oil tank is blocked.This spool movement allows pressurized oil from