793D Off-Highway Truck Power Train: Oil Filter (Rear Axle), Temperature Sensor (Rear Axle Oil) & Flow Control and Relief Valve (Rear Axle Oil)

1.-Oil Filter (Rear Axle)

Rear axle housing (1) Inlet line (2) Outlet line (3) Pressure sensor (4) Rear axle power train filter (5) Level switch for the rear axle(6) Filter bypass switch

Rear axle power train filter (7) Bypass valve (8) Spring (9) Outlet passage (10) Housing (11) Element(12) Inlet passage

Rear axle power train filter (2) is mounted to the back of the rear axle housing. Oil from the rear axle oil pump flows through inlet line (4) to rear axle power train filter (2). Oil then flows through outlet line (5) to final drive bypass manifold.

Filter bypass switch (6) and level switch (5) for the rear axle send input signal to the Vital Information Management System (VIMS). Pressure sensor (3) also sends an input signal to the Vital Information Management System (VIMS).

Oil from inlet line (1) flows into inlet passage (12). This oil fills the space that is between element (11) and the inside of housing (10). During normal operation, the oil flows through element (11). The oil then flows through outlet passage (9). Element (11) stops any debris that is in the oil.

If the filter element becomes full of debris, the restriction to the flow of oil causes a pressure increase inside the filter. If the pressure of the oil achieves the bypass pressure, the pressure oil causes bypass valve (7) to move against the force of spring (8). The oil then goes through open bypass valve (7). This oil flows through the bypass passage and to the final drive bypass manifold. Filter bypass switch (6) notifies the VIMS of this occurrence. When the oil does not go through the filter element, the debris that is in the oil may cause damage to the other components in the system.

Correct maintenance must be used to ensure that element (11) does not become full of debris and that the flow of clean oil is not stopped.

2.-Temperature Sensor (Rear Axle Oil)

(1) Rear axle oil temperature sensor

Rear axle oil temperature sensor (1) is located in the rear axle housing near the rear axle oil pump. Rear axle oil temperature sensor (1) sends input signals to the Vital Information Management System (VIMS). The VIMS warns the operator of a high temperature in the rear axle. Rear axle oil temperature sensor (1) is the main input that is used by the brake ECM in order to control the lubrication system for the rear axle. This data allows the brake ECM to turn the lube system ON or OFF.

The machine may be equipped with a cooling fan for the rear axle. If the machine has this cooling fan, the VIMS will activate the cooling fan according to the information that is supplied by the input signals from the sensor.

3.-Flow Control and Relief Valve (Rear Axle Oil)

Location of flow control and relief valve for rear axle oil (1) Flow control and relief valve (2) Inlet line(3) Outlet line

The control valve and relief valve (1) for the rear axle are located on top of the rear axle housing and connected to the oil filter. Oil is pumped from the oil pump through inlet line (2) and into the control valve. Oil is sent to the final drives and oil is sent to the differential bevel gear through outlet line (3).

Flow control and relief valve (1) Flow control solenoid valve (2) Filter outlet (3) Bypass valve passage (4) Filter inlet(5) Inlet passage

Flow control and relief valve (6) Outlet Passage (7) Relief valve(8) Cavity plug

Control valve (1) and relief valve (7) make up the bypass manifold. The bypass manifold directs the flow of oil to the final drive and the differential bevel gear. Inlet passage (5) receives oil from the oil pump for the rear axle. The oil is then sent through filter inlet (4). If the relief valve pressure in the filter has been exceeded the oil will bypass the filter with bypass valve (3). The oil is then sent through the passage for filter outlet (2) .

Solenoid valve (1) controls the flow of the oil. Solenoid valve (1) will send the oil to the final drives and to the differential bevel gear, or solenoid valve (1) will bypass the final drives. Solenoid valve (1) will bypass the final drives in order to prevent the final drives from receiving too much oil. Solenoid valve (1) is controlled by the brake ECM. The brake ECM receives oil temperature readings from the oil temperature sensor that is located in the rear axle housing. The oil is then sent through outlet passage (6) to the final drives and differential bevel gear. If the final drive is bypassed the oil is sent to the differential bevel gear and to the rear axle housing. Cavity plug (8) is used only with an optional oil cooler.

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793D Off-Highway Truck Power Train: Oil Filter (Rear Axle), Temperature Sensor (Rear Axle Oil) & Flow Control and Relief Valve (Rear Axle Oil) 2013-01-06T20:07:00-08:00 Rating: 4.5 Diposkan Oleh: Unknown