Case ARTICULATED TRUCKS 327B, 330B Tier 3 Simplemux Repair Manual PDF

This repair manual covers the Case 327B and 330B Tier 3 Simplemux articulated trucks. It provides technical information on the operation, maintenance, troubleshooting, and repair of the trucks and their major systems, including service specifications, adjustment procedures, component removal and installation, and overhaul instructions.

The procedures are intended for qualified service personnel. Follow the manufacturer's safety instructions, use the specified tools, and observe the recommended service specifications and tightening torques.

Service and Repair Coverage

The manual includes general technical data for both models, covering vehicle dimensions, weights, performance, capacities, tyre pressures, identification data, and standard tightening torques. It also provides fault code information for the multiplex and engine control systems, including diagnostic procedures and diagnostic connector pin assignments.

The engine section covers electronic control, fuel supply, air intake, variable geometry turbocharger operation, exhaust, engine braking, cooling, and lubrication. It includes technical specifications, troubleshooting by symptoms, maintenance procedures, engine removal and replacement, and component disassembly and reassembly.

The electrical section explains the Simplemux multiplex system, CAN communication lines, electronic control units, sensors, actuators, power supply, relays, fuses, and grounding points. Wiring layouts and component location diagrams support electrical diagnostics and fault tracing.

The steering and dumping section covers the hydraulic steering and body-lifting systems, including system operation, hydraulic diagrams, testing procedures, valve and pump servicing, and steering and dumping cylinder repairs. The power train section addresses the automatic transmission, front, intermediate, and rear axles, differentials, planetary reducers, hubs, driveline, and parking brake components, with maintenance, diagnostic, removal, replacement, and overhaul procedures.

The braking section describes the braking system, including brake pumps, hydraulic accumulators, control valves, and related components. Separate coverage is provided for wet-brake configurations, including brake cooling circuits, testing, maintenance, and component replacement.

Additional sections cover the hydraulic system and pressure test points, front and rear suspensions, the pneumatic system, automatic greasing equipment, and air conditioning. Technical diagrams, specifications, diagnostic information, and step-by-step service procedures support maintenance and repair work on the Case 327B and 330B Tier 3 Simplemux articulated trucks.

Table of Contents

GENERAL
CHAPTER 1
CONDITIONS OF USE AND SAFETY INSTRUCTIONS
TABLE OF CONTENTS
CONDITIONS OF USE 
INFORMATION ON THIS HANDBOOK 
SCHEDULED USE 
WASTE DISPOSAL 
WARRANTY AND LIABILITY OF THE MANUFACTURER 
GENERAL OPERATION RULES 
INTRODUCTION 
ROLLOVER ACCIDENTS 
CHAPTER 2
TECHNICAL DATA
TABLE OF CONTENTS 
VEHICLE COMPOSITION (327B SIMPLEMUX)
DIMENSIONS (EMPTY VEHICLE) 
DIMENSIONS WITH BODY RAISED
WEIGHTS 
CENTER OF GRAVITY (HORIZONTAL POSITION) 
PERFORMANCE 
PERFORMANCE ALIGNMENT CHART 
MAIN TECHNICAL SPECIFICATIONS
POSITION OF IDENTIFICATION DATA ON MAIN GROUPS 
MAIN TECHNICAL SPECIFICATIONS 
LIST OF BULBS 
CAPACITIES 
TYRE PRESSURE TABLE 
ANTIFREEZE CONCENTRATION IN ENGINE COOLANT 
ANTIFREEZE CONCENTRATION IN WINDSHIELD WASHER FLUID 
BATTERY ELECTROLYTE DENSITY TABLE 
TIGHTENING TORQUE
PLATES APPLIED TO THE VEHICLE 
STANDARD TIGHTENING TORQUES 
MEASURES (INTERNATIONAL SYSTEM) 
VEHICLE COMPOSITION (330B SIMPLEMUX) 
DIMENSIONS (EMPTY VEHICLE) 
DIMENSIONS WITH BODY RAISED 
WEIGHTS 
CENTER OF GRAVITY (HORIZONTAL POSITION) 
PERFORMANCE 
PERFORMANCE ALIGNMENT CHART 
MAIN TECHNICAL SPECIFICATIONS 
POSITION OF IDENTIFICATION DATA ON MAIN GROUPS
POSITION OF IDENTIFICATION DATA ON MAIN GROUPS
MAIN TECHNICAL SPECIFICATIONS
LIST OF BULBS 
CAPACITIES
TYRE PRESSURE TABLE 
ANTIFREEZE CONCENTRATION IN ENGINE COOLANT 
ANTIFREEZE CONCENTRATION IN WINDSHIELD WASHER FLUID
BATTERY ELECTROLYTE DENSITY TABLE
TIGHTENING TORQUE 
PLATES APPLIED TO THE VEHICLE
STANDARD TIGHTENING TORQUES
MEASURES (INTERNATIONAL SYSTEM) 
CHAPTER 3
FAULT CODES
TABLE OF CONTENTS
MULTIPLEX SYSTEM FAULT CODES
FAULT CHECK USING THE DISPLAY
MULTIPLEX SYSTEM FAULT CODES LIST - SOFTWARE VERSION 3.3.0.0
ENGINE FAULT CODES 
ENGINE CONTROL FAULT CODES LIST
MULTIPLEX SYSTEM FAULT CODES 
MULTIPLEX SYSTEM FAULT CODES LIST 
DIAGNOSTIC CONNECTOR PIN-OUT

ENGINES
CHAPTER 1
CONDITIONS OF USE AND SAFETY INSTRUCTIONS
TABLE OF CONTENTS 
WALK AROUND 
ELECTRONIC SYSTEM CONTROL 
FEEDING 
FUEL SUPPLY DIAGRAM 2
ENGINE AIR INTAKE SYSTEM 
VARIABLE GEOMETRY TURBINE (VGT) 
ACTUATOR ADJUSTMENT 
VGT CONTROL SOLENOID VALVE
ENGINE EXHAUST SYSTEM
ENGINE BRAKE
EARLY CLOSING SYSTEM FOR THE INTAKE VALVES (“MILLER” CYCLE) 
COOLING
LUBRICATION 
TECHNICAL SPECIFICATION
GENERAL CHARACTERISTICS 
ASSEMBLY CLEARANCE DATA 
TIGHTENING TORQUES 
TIGHTENING ORDER OF GEARBOX TO ENGINE BLOCK FASTENING SCREWS
TOOLS 
TROUBLESHOOTING BY SYMPTOMS 
MAINTENANCE
ENGINE REMOVAL–REPLACEMENT
DETACHMENT-REATTACHMENT OF THE FLEXIBLE COUPLING JOINT
RADIATOR GROUP REMOVAL-REPLACEMENT 
AUTOMATIC TRANSMISSION OIL–WATER HEAT EXCHANGER REMOVAL–REPLACEMENT 
DISMANTLING THE ENGINE ON THE BENCH 
CYLINDER HEAD
ROCKERS

ELECTRICAL
ELECTRICAL SYSTEM
TABLE OF CONTENTS 
MULTIPLEX SYSTEM OVERVIEW 
CAN LINE 
MULTIPLEX SYSTEM GENERAL DIAGRAM 
BULKHEAD CONNECTORS
DIAGNOSTIC CONNECTOR PIN-OUT 
CAN OPEN LINE 
CAN OPEN LINE – DISC BRAKES VERSION 
CAN OPEN LINE – WET OIL BRAKES VERSION 
BODY COMPUTER SYSTEM COMPONENTS
I/O MODE 
MIDAC 
LOCATION OF SENSORS AND ACTUATORS 
CAN J1939 LINE 
EDC ENGINE CONTROL UNIT 
TRANSMISSION CONTROL UNIT (TCU)
ELECTRICAL SUPPLY
GROUND POINTS 
RELAYS AND FUSES INTERCONNECTION CONTROL UNIT 
RELAYS AND FUSES 
TOPOGRAPHIC DIAGRAMS 
GENERAL
TOPOGRAPHIC DIAGRAM OF FRONT MAIN FRAME SERVICES CABLE WIRING -
(DISC BRAKES)
TOPOGRAPHIC DIAGRAM OF FRONT MAIN FRAME SERVICES CABLE WIRING -
(WET BRAKES)TOPOGRAPHIC DIAGRAM OF REAR MAIN FRAME SERVICES CABLE WIRING
TOPOGRAPHIC DIAGRAM OF CAB CABLE WIRING 
TOPOGRAPHIC DIAGRAM OF ENGINE - MAIN FRAME WIRING
TOPOGRAPHIC DIAGRAM OF MAIN FRAME - AUTOMATIC TRANSMISSION WIRING 
TOPOGRAPHIC DIAGRAM OF CAB - AUTOMATIC TRANSMISSION WIRING 
WORK ON THE BATTERIES 

ELECTRICAL SYSTEM

STEERING
CHAPTER 1
WHEELS AND TYRES
TABLE OF CONTENTS 
WHEELS 
SPECIFICATIONS AND DATA 
TIGHTENING TORQUE 
REPLACING A COMPLETE WHEEL 
TYRE–RIM DISASSEMBLY–ASSEMBLY 
CHAPTER 2
STEERING AND DUMPING SYSTEM
TABLE OF CONTENTS
STEERING AND DUMPING SYSTEM – DESCRIPTION
HYDRAULIC DIAGRAM 
OPERATION
TOPOGRAPHICAL DIAGRAMS
TOPOGRAPHICAL DIAGRAMS 
MAINTENANCE 
MAIN SYSTEM 
STEERING – DUMPING SYSTEM TEST PROCEDURES
DUMPING VALVE REMOVAL/REPLACEMENT 
DUMPING CYLINDER REMOVAL – REPLACEMENT 
STEERING VALVE REMOVAL – REPLACEMENT
MAIN PUMP REMOVAL–REPLACEMENT
STEERING CYLINDER REMOVAL – REPLACEMENT 
DUMPING CYLINDER OVERHAUL 
STEERING CYLINDER OVERHAUL 
STEERING–DUMPING VALVE BLOCK OVERHAUL 
CHAPTER 3
EMERGENCY STEERING SYSTEM
TABLE OF CONTENTS 
EMERGENCY STEERING SYSTEM 
INSPECTION PROCEDURES 
EMERGENCY STEERING PUMP REMOVAL–REPLACEMENT

POWER TRAIN
AUTOMATIC TRANSMISSION
TABLE OF CONTENTS
DESCRIPTION 
AUTOMATIC TRANSMISSION CROSS-SECTION VIEW
AUTOMATIC TRANSMISSION EXTERNAL PIPE ARRANGEMENT VIEW 
TRANSMISSION SPEED SENSORS 
FUNDAMENTAL COMPONENTS
OPERATION
FRONT DIFFERENTIAL FITTING 
OIL CIRCULATION SYSTEM – VERSION WITH RETARDER 
OIL CIRCULATION SYSTEM – VERSION WITHOUT RETARDER
AUTOMATIC TRANSMISSION CONTROL SYSTEM COMPONENTS
TECHNICAL DATA
TIGHTENING TORQUE 
EQUIPMENT 
MAINTENANCE 
TRANSMISSION HYDRAULIC CONTROL DIAGRAM
REMOVAL – REPLACEMENT AUTOMATIC TRANSMISSION GEARBOX
REMOVAL – REPLACEMENT OF THE FRONT DIFFERENTIAL
INSPECTION 
HYDRAULIC CONTROL UNIT 
LOCK–UP CLUTCH VALVE (WK) 
GEARBOX AND GEAR DISASSEMBLY 
GENERAL ASSEMBLY STANDARDS 
DISMANTLING AND REASSEMBLY OF MAIN UNITS 
GEARBOX AND GEAR ASSEMBLY 
CHAPTER 2
FRONT AXLE
TABLE OF CONTENTS 
DESCRIPTION (FRONT DISC BRAKES) 
SPECIFICATIONS AND DATA 
TIGHTENING TORQUES 
EQUIPMENT 
DIAGNOSTICS
MAINTENANCE 
FRONT DIFFERENTIAL
FRONT HUBS 
FRONT HUB REMOVAL 
BRAKE CALIPER DETACHMENT–REATTACHMENT
EPICYCLIC REDUCER OVERHAUL 
FRONT DIFFERENTIAL OVERHAUL 
BRAKE CALIPER OVERHAUL
BRAKE DISC OVERHAUL 
SPECIFICATIONS AND DATA 
TIGHTENING TORQUES 
TOOLS 
DIAGNOSTICS 
MAINTENANCE 
FRONT HUBS
FRONT HUB REMOVAL-REFIT
EPICYCLIC REDUCER OVERHAUL 
FRONT DIFFERENTIAL OVERHAUL 
CHAPTER 3
INTERMEDIATE AXLE
TABLE OF CONTENTS
DESCRIPTION (DRY DISC BRAKES)
SPECIFICATIONS AND DATA
TIGHTENING TORQUES 
TOOLS 
DIAGNOSTICS 
MAINTENANCE 
INTERMEDIATE AXLE REMOVAL-REFIT 
BRAKE CALIPER DETACHMENT-REATTACHMENT 
PLANETARY REDUCER OVERHAUL 
TANDEM AXLE AND DIFFERENTIAL OVERHAUL 
BRAKE CALIPER OVERHAUL 
BRAKE DISC OVERHAUL
DESCRIPTION 
SPECIFICATIONS AND DATA 
TIGHTENING TORQUES
TOOLS 
DIAGNOSTICS
MAINTENANCE
INTERMEDIATE AXLE REMOVAL-REFIT 
PLANETARY REDUCER OVERHAUL 
TANDEM AXLE AND DIFFERENTIAL OVERHAUL 
CHAPTER 4
REAR AXLE
TABLE OF CONTENTS
DESCRIPTION (DISC BRAKES)
SPECIFICATIONS AND DATA 
TIGHTENING TORQUES
TOOLS 
DIAGNOSTICS 
MAINTENANCE 
REAR AXLE REMOVAL-REFIT 
BRAKE CALIPER REMOVAL–INSTALLATION 
PLANETARY REDUCER OVERHAUL
DIFFERENTIAL OVERHAUL 
BRAKE CALIPER OVERHAUL 
BRAKE DISC OVERHAUL 
DESCRIPTION (WET BRAKES)
SPECIFICATIONS AND DATA
TIGHTENING TORQUES 
TOOLS 
DIAGNOSTICS 
MAINTENANCE 
REAR AXLE REMOVAL-REPLACE 
PLANETARY REDUCER OVERHAUL 
REAR DIFFERENTIAL OVERHAUL
CHAPTER 5
DRIVELINE
TABLE OF CONTENTS 
DESCRIPTION 
SPECIFICATIONS AND DATA 
TIGHTENING TORQUES
TIGHTENING TORQUES
INSPECTION PROCEDURES 
MAINTENANCE 
REMOVAL–REPLACEMENT OF THE PARKING BRAKE DISC AND CALIPER 
CENTRAL BEARING OVERHAUL

BRAKES
CHAPTER 1
BRAKING SYSTEM
TABLE OF CONTENTS
BRAKING SYSTEM 
OPERATION 
TOPOGRAPHICAL DIAGRAMS 
A. BRAKE PUMP
C. ACCUMULATORS 
D. FILTER AND LIMITATION VALVE
E. BRAKE COMMAND VALVE 
F. REAR CHASSIS CONNECTOR PLATE 
BRAKING SYSTEM TEST PROCEDURES 
MAINTENANCE
BRAKE PUMP REMOVAL–REPLACEMENT 
HYDRAULIC ACCUMULATOR REMOVAL–REPLACEMENT 
RELAY VALVE REMOVAL–REPLACEMENT 
CHAPTER 2
BRAKING SYSTEM - WET BRAKES VERSION
TABLE OF CONTENTS 
BRAKING SYSTEM 
OPERATION 
TOPOGRAPHICAL DIAGRAMS 
A. BRAKE PUMP
B. OIL TANK 
C. FRONT ACCUMULATOR 
D. FILTER AND RESTRICTOR VALVE
E. BRAKE CONTROL VALVE 
F. BRAKE COOLING MOTOR/PUMP ASSEMBLY 
G. FRONT AXLE BRAKE ACTUATION 
H. REAR MAIN FRAME CONNECTION PLATE 
I. RELAY VALVE 
L. REAR ACCUMULATOR 
M. INTERMEDIATE AXLE BRAKE ACTUATION 
BRAKING SYSTEM TEST PROCEDURES 
MAINTENANCE
BRAKE PUMP REMOVAL–REPLACEMENT 
HYDRAULIC ACCUMULATOR DETACHMENT-REATTACHMENT 
DISASSEMBLY-REASSEMBLY OF THE RELAY VALVE 
BRAKE PEDAL VALVE DETACHMENT-REATTACHMENT 
CHAPTER 3
BRAKE COOLING SYSTEM (WET BRAKES VERSION)
OPERATION 
TOPOGRAPHICAL DIAGRAMS 
A. OIL TANK 
B. BRAKE COOLING MOTOR/PUMP ASSEMBLY 
C. FRONT AXLE BRAKE COOLING ASSEMBLY 
D. REAR CHASSIS CONNECTION PLATE 
E. INTERMEDIATE AXLE BRAKE COOLING ASSEMBLY
BRAKE COOLING CIRCUIT PUMP-MOTOR REMOVAL-REPLACEMENT
BRAKE COOLING SYSTEM

HYDRAULICS
DESCRIPTION
HYDRAULIC SYSTEM PRESSURE TEST POINTS 
HYDRAULIC SYSTEM PRESSURE TEST POINTS
TECHNICAL DATA

MOUNTED EQUIPMENT
CHAPTER 1
SUSPENSIONS
TABLE OF CONTENTS
DESCRIPTION 
TECHNICAL DATA 
TIGHTENING TORQUES 
TIGHTENING TORQUES 
MAINTENANCE 
DISASSEMBLY–REASSEMBLY OF THE AXLE SHAFT PROTECTIONS
FRONT SUSPENSION REMOVAL–REPLACEMENT 
FRONT SUSPENSION CYLINDER REMOVAL–REPLACEMENT 
REPLACEMENT OF THE FRONT SUSPENSION BALL JOINT
(TYPE II SUSPENSIONS ONLY) 
REAR SUSPENSION REMOVAL–REPLACEMENT 
DISASSEMBLY–REASSEMBLY OF THE REAR SUSPENSION CENTRAL BUSHINGS
REMOVAL–REPLACEMENT OF THE REAR SUSPENSION STABILIZER BARS 
REMOVAL–REPLACEMENT OF THE REAR SUSPENSION BUSHINGS
SUSPENSION CYLINDER OVERHAUL 
CHAPTER 2
PNEUMATIC SYSTEM
TABLE OF CONTENTS
DESCRIPTION
PNEUMATIC DIAGRAM 
COMPONENTS LOCATION PNEUMATIC SYSTEM 
DIAGNOSTIC 
DRIER 
MAIN COMPONENTS PNEUMATIC SYSTEM 
CHAPTER 3
GREASE SYSTEM
TABLE OF CONTENTS 
MANUAL GREASING 
GREASING SYSTEM CALIBRATION
GREASING TIME ADJUSTMENT 
DISTRIBUTION DIVIDER 
CHAPTER 4
AIR CONDITIONING SYSTEM
TABLE OF CONTENTS
AIR–CONDITIONING SYSTEM 
TECHNICAL DATA 
DIAGNOSTICS MAINTENANCE 
SYSTEM DRAINING AND RECHARGING PROCEDURES 
R134A REFRIGERANT RECHARGING AND RECOVERY STATION (99305146)

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