Description
Hitachi AH350, AH400 Articulated Dump Truck Service Manual
Hitachi AH350, AH400 Articulated Dump Truck INDEX:
ELECTRICAL
Specifications
Operator controls and instruments
Instrument panel LH
Operator controls, instrument panel
Instrument panel RH
Circuit breaker board
Air conditioner
Indicators and headlight control
Push button shift selector and range hold switch
Battery disconnect switch
Battery box circuit breakers
Fault finding
Relays
Trouble shooting
Schematics
Earth points
Starting and charging
Indicator/hazard/air horn
Headlight
Warning
Guages
Over rev/low air/trans temp
Wiper washer/aircon/int light
Stoplight/evbfrev light
Park brake/hold range/bin up
Allison
High/low range
Flame star/trans cooler fans/trans cooler
Radio/battery balancer
Connector 1
Connectors 2 & 3
Connectors 4,5,6 & 7
Connectors & 11
Connectors 12 , 13 & 14
Connectors & 18
Connectors 19.20,21 & 23
Connectors 24,25.26 & 27
SECTION 2
TRANSMISSION
General Description
Identification
Torque Convertor
Stall Testing
Planetary gears and power flows
Planetary gear sets
Transmission cross section
Neutral
First
Second
Third
Fourth
Fifth
Sixth
Reverse
Hydraulic system Overview
System function
Main pressure
Solenoid and Regulator valves
Clutch application
Latching valves
Control main circuit
Torque convertor circuit
Exhaust backfill
Main pressure regulator
Control main regulator
Solenoids
Normally open
Normally closed
solenoids
Hydraulic Schematics (Transmission) Overview
Component location (fold out)
Neutral
First
Second
Third
Fourth
Fifth
Sixth
Hydraulic flow operation
Torque convertor and lube circuits
Convertor flow valve
Over drive knock down valve
Main Pressure
Exhaust backfill
Electronic control system
ECU
Pulse width modulation (PWM)
Upshift clutch control
Shift selectors
Vehicle interface module
Throttle position sensor and adjustment
Speed sensors
Wiring Harness
Upshift tests
Do not shift light (DNS)
Auto detect
Wire check procedures
Oil level sensor ( Checking the oil level)
