Berisi panduan cara melakukan hidrostatis tes untuk sistem perpipaan
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Service Training MALAGA
TRACK TYPE LOADERS HYDROSTATIC DRIVE SYSTEM
Francis July 1997
TRACK TYPE LOADERS CHAPTER : Introduction
TRACK-TYPE LOADERS HYDROSTATIC DRIVE SYSTEM
AUDIENCE Level II – Service personnel who understand the principles of machine systems operation, diagnostic equipment, and procedures for testing and adjusting.
CONTENT The information contained within this package deals with the 943 through the 973 Track-type Loaders. Changes have occurred since the release of STMG 493 plus the addition of the 953B model warrant this STMG on the hydrostatic transmission.
OBJECTIVES After learning the information in this presentation, the serviceman will be able to: 1. locate and identify all major transmission components; 2. identify pressure tap locations and explain the purpose of each pressure test; 3. trace the flow of oil through the drive system during the different system conditions; and 4. explain the operation of each component in the transmission systems.
REFERENCES 953B Track-type Loader Service Manual 963 Track-type Loader Service Manual 973 Track-type Loader Service Manual 953B Track-type Loader Parts Book 963 Track-type Loader Parts Book 973 Track-type Loader Parts Book 953B Track-type Loader (Advertising Literature)
PREREQUISITES STMG 493 "Hydrostatic Drive System for Track Loaders"
SESV1493
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TRACK TYPE LOADERS CHAPTER : Introduction
SUPPLEMENTARY TRAINING MATERIAL
Service Magazine "Troubleshooting, Service Tips, And Major Improvements For Hydrostatic Transmissions" December 5, 1984 SEBD1487 Service Magazine Article "Service Replacement Parts for Replenishing Valve on Hydrostatic Transmission" May 3, 1993 SEPD0152 Service Magazine Article "Improved Filtration of Hydrostatic Transmission Filters" January 20, 1992 SEPD0097 Schematic - 953B Track-type Loader Power Train SENR5276 Schematic - 943, 953, 963 Track-type Loader Power Train SENR3034 Schematic - 973 Track-type Loader Power Train SENR3079 Video Tape "Hydrostatic Loader Troubleshooting I - Learning The Seven Systems" SEVN9185 Video Tape "Hydrostatic Loader Troubleshooting II - Analyzing The Data Sheet" SEVN9186 Slide Presentation - 1.1 Liter Engine Family LESV0556 Video Tapes - 3100 Series Engines (11 tape set) LEKV8596
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
POWER TRAIN COMPONENTS
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VARIABLE DISPLACEMENT PUMP
FIXED DISPLACEMENT MOTOR
TRACK TYPE LOADERS
BASIC DRIVE SYSTEM
CHAPTER : HYDROSTATIC DRIVE SYSTEM
HYDRAULIC LINES
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BASIC DRIVE SYSTEM WITH CHARGE CIRCUIT AND COOLER VARIABLE DISPLACEMENT PUMP
MAIN RELIEF VALVE
FIXED DISPLACEMENT MOTOR
CHARGE AND MAIN RELIEF VALVE
COOLER
TRACK TYPE LOADERS
CHARGE PUMP
CHAPTER : HYDROSTATIC DRIVE SYSTEM
CHARGE RELIEF VALVE
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BASIC DRIVE SYSTEM WITH UNDERSPEED AND SERVO VALVES VARIABLE DISPLACEMENT PUMP
MAIN RELIEF VALVE
FIXED DISPLACEMENT MOTOR
CHARGE AND MAIN RELIEF VALVE
CHARGE PUMP UNDERSPEED VALVE
ENGINE SPEED
OPERATOR INPUT
COOLER
TRACK TYPE LOADERS
CHARGE RELIEF VALVE
CHAPTER : HYDROSTATIC DRIVE SYSTEM
SERVO VALVE
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BASIC DRIVE SYSTEM BOTH DRIVE LOOPS
8
VARIABLE DISPLACEMENT PUMP
MAIN RELIEF VALVE
FIXED DISPLACEMENT MOTOR
CHARGE AND MAIN RELIEF VALVE
SERVO VALVE CHARGE RELIEF VALVE
OPERATOR INPUT
UNDERSPEED VALVE
ENGINE SPEED VARIABLE DISPLACEMENT PUMP
MAIN RELIEF VALVE
CHARGE AND MAIN RELIEF VALVE
SERVO VALVE
FIXED DISPLACEMENT MOTOR
TRACK TYPE LOADERS
COOLER
CHAPTER : HYDROSTATIC DRIVE SYSTEM
CHARGE PUMP
TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
ROTATING GRTOUP
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
PUMP GROPUP
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
HYDROSTATIC TRANSMISSION COMPONENTS
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CHARGE PUMP AND FILTER SYSTEM
12 START/VENT SPOOL
FILTER RELIEF VALVE
UNDERSPEED CUT-IN SCREW
VENTURI THROAT ORIFICE
CHARGE PUMP
FILTER
MAXIMUM REVERSE
MAXIMUM FORWARD
QUICK RESPONSE VALVE SCREEN
DIRECT
TRACK TYPE LOADERS
PARK
CHAPTER : HYDROSTATIC DRIVE SYSTEM
VENTURI
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REVERSE BRAKES OFF BRAKES OFF FORWARD
UNDERSPEED AND OVERSPEED SYSTEM PILOT VALVE
TO BRAKES
CHARGE PRESSURE CHECK VALVE SPEED/BRAKE SPOOL
START/VENT SPOOL
SERVO RELIEF VALVE
VENTURI
UNDERSPEED CUT-IN SCREW
PARK
CHARGE PUMP SCREEN
FILTER
MAXIMUM REVERSE
QUICK RESPONSE VALVE
MAXIMUM FORWARD
DIRECTION/ SPEED LINK
OVERSPEED VALVE UNDERSPEED VALVE
UNDERSPEED OVERRIDE VALVE
TRACK TYPE LOADERS
VENTURI THROAT ORIFICE
CHAPTER : HYDROSTATIC DRIVE SYSTEM
FILTER RELIEF VALVE
TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
UNDERSPEED VALVE
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
UNDERSPEED VALVE COMPONENTS
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
UNDERSPEED VALVE FRONT VIEW
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
SPEED/DIRECTION CONTROL LEVER IN BRAKE OFF POSITION
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
UNDERSPEED VALVE IN BRAKE OFF POSITION
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
SPEED/DIRECTION CONTROL LEVER MAXIMUM FORWARD POSITION
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
UNDERSPEED VALVE MAXIMUM FORWARD POSITION
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21
REVERSE BRAKES OFF BRAKES ON BRAKES OFF FORWARD
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PILOT VALVE
OPERATE/BRAKE SPOOL SYSTEM OPERATE/BRAKE SPOOL
ORIFICE TO PILOT VALVE
TO BRAKES
CHARGE PRESSURE CHECK VALVE SPEED/BRAKE SPOOL
VENTURI
UNDERSPEED CUT-IN SCREW
VENTURI THROAT ORIFICE PARK
CHARGE PUMP SCREEN
FILTER QUICK RESPONSE VALVE
MAXIMUM REVERSE
MAXIMUM FORWARD
TRACK TYPE LOADERS
FILTER RELIEF VALVE
CHAPTER : HYDROSTATIC DRIVE SYSTEM
START/VENT SPOOL
TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
SERVO CONTROL SYSTEM LEFT DRIVE PUMP LUBE SCREEN
RIGHT SERVO CYLINDER
NEUTRAL SCREW
SERVO VALVE SERVO RELIEF VALVE LEFT DRIVE PUMP
CENTERING LINK
RIGHT DRIVE PUMP LUBE SCREEN
RIGHT DRIVE PUMP SERVO VALVE
SYNC SCREW
LEFT SERVO CYLINDER
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SYNC SCREW
NEUTRAL SCREW
SERVO VALVE
LEFT SERVO CYLINDER
RIGHT SERVO CYLINDER
SERVO VALVE
RIGHT DRIVE PUMP
LEFT DRIVE PUMP CENTERING LINK
RIGHT DRIVE PUMP LUBE SCREEN
LEFT DRIVE PUMP LUBE SCREEN
SHUTTLE SPOOL
TOWING PLUG
SYNC VALVE
RIGHT CHARGE AND MAIN RELIEF VALVE
MAIN RELIEF VALVE
MAIN RELIEF VALVE
TOWING PLUG
SHUTTLE SPOOL
SYNC CUTOFF VALVE
LEFT CHARGE AND MAIN RELIEF VALVE
OIL COOLER RETURN SCREEN
COOLER
COOLER BYPASS VALVE
CHARGE PRESSURE RELIEF VALVE
TO BRAKES
PISTON PUMPS, MOTORS AND RELIEF SYSTEM
RIGHT TRACK MOTOR
LEFT TRACK MOTOR
TRACK TYPE LOADERS
CHAPTER : HYDROSTATIC DRIVE SYSTEM
TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
SERVO VALVE ILLUSTRATION
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TRACK TYPE LOADERS CHAPTER : HYDROSTATIC DRIVE SYSTEM
