SENSOR GP-SPEED 1718963 - Caterpillar

Park the machine on a hard, level surface. Lower the scraper bowl to the ground and engage the parking brake. Chock the wheels in order to prevent the machine from moving.
At operating temperature the implement hydraulic oil tank is hot and under pressure. Hot oil can cause burns.To prevent possible injury, release the pressure in the implement hydraulic system before hydraulic lines or components are disconnected or removed.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Put identification marks on all lines, hoses, wires, and tubes for installation purposes. Plug all lines, hoses and tubes. This helps prevent fluid loss and contamination of the oil system.
Illustration 1 g00520794
Remove four bolts (1) and the washers that secure step (2) to the fender. Remove step (2) from the fender.
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Remove four bolts (3) and the washers that secure tube assembly (4) to control valve (5) . Disconnect tube assembly (4) and the O-ring seal from control valve (5) .
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Disconnect hose assembly (6) from tube assembly (4) . Move the tube assembly away from the control valve.
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Disconnect three hose assemblies (7) from control valve (5) .
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Disconnect two hose assemblies (8) from control valve (5) . Remove four bolts (9) , the washers and two half flanges that secure hose assembly (10) to control valve (5) . Disconnect hose assembly (10) from control valve (5) .
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Remove eight bolts (11) , the washers and four half flanges that secure two hose assemblies (12) to control valve (5) . Disconnect two hose assemblies (12) from control valve (5) .
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Remove eight bolts (13) , the washers and four half flanges that secure two hose assemblies (14) to control valve (5) . Disconnect two hose assemblies (14) from control valve (5) .
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Remove three bolts (15) and clip (16) that secures control valve (5) to the fender.
Illustration 9 g00520842
Install Tooling (A) , two nylon lifting straps and a hoist to the control valve. Raise the control valve away from the fender. Do not remove the control valve at this time.
Illustration 10 g00520843
Disconnect hose assembly (17) from control valve (5) . Remove the control valve from the machine. The control valve weighs 45 kg (100 lb) .