773E Off-Highway Truck and 775E Off-Highway Truck Air System and Brakes Caterpillar

Brake Hydraulic System

Usage:

773E BDA

Schematic

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Illustration 1	g00985934
(1) Left rear wheel brake (2) Air breather (3) Left front wheel brake (4) Towing diverter valve (5) Pump and motor (secondary steering) (brake release) (prelubrication) (high speed oil change - quickevac) (6) Hoist and brake hydraulic tank (7) Parking brake check valve (8) Brake pump section of the hoist and rear brake cooling gear pump (9) Hoist pump section of the hoist and rear brake cooling gear pump (10) Air/hydraulic cylinder (front) (11) Parking and secondary brake valve (12) Hoist and rear brake cooling gear pump (13) Air/hydraulic cylinder (rear) (14) Hoist control valve (15) Rear slack adjuster (16) Rear brake oil cooler (17) Rear brake oil cooler relief valve (18) Makeup tank for brake oil (19) Hoist cylinders (20) Right rear wheel brake (21) Right front wheel brake

Location Of Components

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Illustration 2	g00784859
(10) Air/hydraulic cylinder (front) (13) Air/hydraulic cylinder (rear) (18) Makeup tank for brake oil

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Illustration 3	g00837655
Top view of the front service brake lines (3) Left front wheel brake (18) Makeup tank for brake oil

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Illustration 4	g00983779
Top view of rear service brake lines (4) Towing diverter valve (5) Pump and motor (secondary steering) (brake release) (prelubrication) (high speed oil change - quickevac) (6) Hoist and brake hydraulic tank (11) Parking and secondary brake valve (12) Hoist and rear brake cooling gear pump (15) Rear slack adjuster (16) Rear brake oil cooler (22) Parking brake release hydraulic filter

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Illustration 5	g00983780
Side view of rear service brake lines (4) Towing diverter valve (5) Pump and motor (secondary steering) (brake release) (prelubrication) (high speed oil change - quickevac) (6) Hoist and brake hydraulic tank (11) Parking and secondary brake valve (15) Rear slack adjuster (16) Rear brake oil cooler (22) Parking brake release hydraulic filter

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Illustration 6	g00837658
Top view of rear brake oil cooler lines (1) Left rear wheel brake (6) Hoist and brake hydraulic tank (14) Hoist control valve (16) Rear brake oil cooler (20) Right rear wheel brake

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Illustration 7	g00837661
Side view of rear brake oil cooler lines (6) Hoist and brake hydraulic tank (11) Parking and secondary brake valve (14) Hoist control valve (16) Rear brake oil cooler

Caterpillar Information System:

CP-433E, CS-423E and CS-433E Vibratory Compactors Machine Systems Piston Motor (Axle Propel) - Remove

768C, 769C, 769D, 772B, 773B, 773D, 776C, 777B, 777D, 784B, 785, 785B, 789, 789B, 793, 793B and 793C Off-Highway Truck/Tractors and 771C, 771D and 775D Quarry Trucks Automatic Retarder Control (ARC) System CID 0713 FMI 03 Rocker Switch (Auto Retarder On/Off) Voltage Above Normal - Test

768C, 769C, 769D, 772B, 773B, 773D, 776C, 777B, 777D, 784B, 785, 785B, 789, 789B, 793, 793B and 793C Off-Highway Truck/Tractors and 771C, 771D and 775D Quarry Trucks Automatic Retarder Control (ARC) System CID 0712 FMI 06 Lamp (Retarder Indicator) Current Above Normal - Test

TH350B, TH355B, TH360B and TH460B Telehandlers Engine Air Filter Primary Element - Clean/Replace

TH350B, TH355B, TH360B and TH460B Telehandlers Drive Shaft Spline - Lubricate

2001/12/24 A New Housing for the Interaxle Differential Lock Improves the Capability of the Lock {1164, 3159}

735 Articulated Truck Power Train Hitch Drive Shaft Bearings - Install

TH350B, TH355B, TH360B and TH460B Telehandlers Boom Telescoping Cylinder Air - Purge

TH350B, TH355B, TH360B and TH460B Telehandlers Boom Pivot Shaft - Lubricate

725 and 730 Articulated Trucks Braking System Operational Checks

988G Wheel Loader STIC Transmission Control

914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Electronic Control Module (Hydrostatic Transmission)

CP-433E, CS-423E and CS-433E Vibratory Compactors Machine Systems Piston Motor (Axle Propel) - Install

914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System General Information

768C, 769C, 769D, 772B, 773B, 773D, 776C, 777B, 777D, 784B, 785, 785B, 789, 789B, 793, 793B and 793C Off-Highway Truck/Tractors and 771C, 771D and 775D Quarry Trucks Automatic Retarder Control (ARC) System CID 0713 FMI 04 Rocker Switch (Auto Retarder On/Off) Voltage Below Normal - Test

768C, 769C, 769D, 772B, 773B, 773D, 776C, 777B, 777D, 784B, 785, 785B, 789, 789B, 793, 793B and 793C Off-Highway Truck/Tractors and 771C, 771D and 775D Quarry Trucks Automatic Retarder Control (ARC) System CID 0714 FMI 03 Pressure Switch (Auto Retarder) Voltage Above Normal - Test

CP-433E, CS-423E and CS-433E Vibratory Compactors Machine Systems Padded Drum Scraper - Remove and Install

3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks ECM/Personality Module

3126B Engines for the IT38G Series II Integrated Toolcarrier and the 938G Series II Wheel Loader System Configuration Parameters

CP-433E, CS-423E and CS-433E Paving Compactors Belts - Inspect/Adjust/Replace

2001/10/29 The Service Interval for Tightening Sprocket Retaining Nuts {4164}

CP-433E, CS-423E and CS-433E Vibratory Compactors Machine Systems Control Valve (Shift) - Remove

3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks Electrical Power Supply

768C, 769C, 769D, 772B, 773B, 773D, 776C, 777B, 777D, 784B, 785, 785B, 789, 789B, 793, 793B and 793C Off-Highway Truck/Tractors and 771C, 771D and 775D Quarry Trucks Automatic Retarder Control (ARC) System CID 0715 FMI 03 Pressure Switch (Retarder) Voltage Above Normal - Test