GASKET 1440620 - Caterpillar

The BrakeSaver permits the operator to control the speed reduction of the vehicle on grades and curves. The BrakeSaver permits the operator to control the speed reduction at any time when speed reduction is necessary but long applications of the service brakes are not desired.BrakeSaver Components
Illustration 1 g00292547
BrakeSaver components
(1) Flywheel housing
(2) Rotor
(3) BrakeSaver housing
(4) Flywheel
(5) Crankshaft flange
(6) Ring gear plate
(7) Stator BrakeSaver housing (3) is fastened directly to the rear face of flywheel housing (1). The BrakeSaver adds approximately four inches to the length of the engine drive train. Rotor (2) and ring gear plate (6) are installed between the rear flange of crankshaft (5) and flywheel (4). The engine can use a standard starter motor with ring gear plate (6). The rotor turns in a space between stator (7) and BrakeSaver housing (3).
Illustration 2 g00292548
BrakeSaver Components
(8) The rear section of the oil pump.
(9) BrakeSaver
(10) Tube
(11) Hole
(12) Bypass valve
(13) Baffle
(14) The front section of the oil pump.
(15) Engine oil pan
(16) BrakeSaver control valve
(17) Line
(18) Line The engine oil pump has two sections. Front section (14) of the oil pump supplies oil to the engine for lubrication. Rear section (8) of the oil pump sends engine oil through BrakeSaver control valve (16) to BrakeSaver (9). The rear section of the oil pump also sends oil through line (17) to the engine oil cooler (not shown). From the oil cooler, the cool oil goes through line (18), through baffle (13) and back into the engine oil pan (15).Tube (10) allows the oil in the BrakeSaver to rapidly go out of the BrakeSaver when the BrakeSaver is turned off. This oil returns to the engine oil pan.The oil has a high viscosity when the engine is cold (starting conditions). The high viscosity causes a restriction to the oil flow through the oil cooler. A restriction in the oil cooler will result in an oil pressure difference in bypass valve (12). The oil pressure difference will cause the valve to open. An open bypass valve will cause the oil from the rear section of the oil pump to go through hole (11) in bypass valve (12). The oil drains into engine oil pan (15).BrakeSaver Lubrication
Illustration 3 g00292550
BrakeSaver lubrication
(1) Oil line
(2) Orifice
(3) Piston type ring seal
(4) Orifice
(5) Chamber
(6) Piston type ring seal
(7) Lip type seal
(8) Lip type seal
(9) Oil drain line Piston type ring seal (3) and piston type ring seal (6) keep pressurized oil in chamber (5) around the rotor during operation. Lip type seal (7) and lip type seal (8) prevent oil leakage from the BrakeSaver. Outside oil line (1) from the engine lubrication system sends engine oil to the BrakeSaver housing. Orifice (2) and orifice (4) in the BrakeSaver send oil to the space between the lip seals and the piston type seals. Oil is delivered at a rate of 1.24 L/min (0.33 US gpm). The oil lubricates the seals under all conditions of operation.The space between the lip type seals and the piston type seals is connected to oil drain line (9).