FORM NO. 56043071 CMAX
™
28/34ST / I-MAX
™
28/32C, BA 750/850ST, BA 750C -
1
GENERAL INFORMATION .................................................................................................................................................. 2
SAFETY INSTRUCTIONS .................................................................................................................................................. 3
SPECIFICATIONS & MAINTENANCE ............................................................................................................................. 4-6
PM CHECKLIST ............................................................................................................................................................... 7-8
KNOW YOUR MACHINE ............................................................................................................................................... 9-13
SOLUTION SYSTEM ................................................................................................................................................... 14-19
FUNCTIONAL OVERVIEW .............................................................................................................................................. 14
CIRCUIT OVERVIEW SOLUTION AUTO MODE ............................................................................................................ 15
SOLUTION SYSTEM MAINTENANCE ............................................................................................................................ 16
TROUBLESHOOTING GUIDE ................................................................................................................................... 16-17
SOLUTION SOLENOID VALVE REMOVAL .................................................................................................................... 18
SOLUTION VALVE DISASSEMBLY AND CLEANING .................................................................................................... 18
SOLUTION FILTER REMOVAL ....................................................................................................................................... 18
SOLUTION FLOW CONTROL VALVE REMOVAL .......................................................................................................... 18
SCRUB BRUSH SYSTEM ............................................................................................................................................ 20-32
GENERAL BRUSH SYSTEM FUNCTIONAL OVERVIEW ............................................................................................... 20
SPECIAL SCRUB SYSTEM FUNCTIONS ................................................................................................................. 20-21
SCRUB BRUSH SYSTEM TROUBLESHOOTING .................................................................................................... 22-26
SCRUB BRUSH DECK REMOVAL (DISC) ...................................................................................................................... 27
SCRUB BRUSH LIFT ACTUATOR REMOVAL (DISC) .................................................................................................... 27
SCRUB BRUSH MOTOR/GEARBOX REMOVAL (DISC) ................................................................................................ 27
SCRUB BRUSH DECK ASSEMBLY REMOVAL (CYLINDRICAL) .................................................................................. 30
SCRUB BRUSH MOTOR(S) REMOVAL (CYLINDRICAL) .............................................................................................. 30
SCRUB BRUSH BELT REPLACEMENT (CYLINDRICAL) .............................................................................................. 30
SCRUB BRUSH SYSTEM MAINTENANCE (CYLINDRICAL) ......................................................................................... 30
SCRUB BRUSH REMOVAL AND INSTALLATION (CYLINDRICAL) .............................................................................. 30
SCRUB BRUSH LIFT ACTUATOR REMOVAL (CYLINDRICAL) .............................................................................. 30-31
RECOVERY SYSTEM .................................................................................................................................................. 33-39
FUNCTIONAL OVERVIEW ........................................................................................................................................ 33-34
VACUUM/RECOVERY SYSTEM MAINTENANCE CHECKLIST ..................................................................................... 35
TROUBLESHOOTING GUIDE ................................................................................................................................... 35-37
MAINTENANCE OF FLOAT CAGE AND FLOAT DUCT ................................................................................................. 38
VACUUM MOTOR REMOVAL ......................................................................................................................................... 38
RECOVERY TANK REMOVAL ........................................................................................................................................ 38
SQUEEGEE SYSTEM .................................................................................................................................................. 40-41
SQUEEGEE LIFT LINKAGE ADJUSTMENT ................................................................................................................... 40
SQUEEGEE TOOL BLADE(S) REPLACEMENT ............................................................................................................. 40
SQUEEGEE ADJUSTMENT ............................................................................................................................................ 40
WHEEL DRIVE SYSTEM ............................................................................................................................................. 42-51
GENERAL FUNCTIONAL OVERVIEW ............................................................................................................................ 42
TROUBLESHOOTING GUIDE ................................................................................................................................... 43-45
DRIVE MOTOR REMOVAL (ALL MODELS) .................................................................................................................... 47
DRIVE WHEEL REMOVAL (CYLINDRICAL) ................................................................................................................... 47
DRIVE WHEEL REMOVAL (DISC) .................................................................................................................................. 48
CHAIN MAINTENANCE, REMOVAL AND ADJUSTMENT ........................................................................................ 48-49
OPTIONAL PARKING BRAKE OPERATION ................................................................................................................... 49
OPTIONAL BRAKE ASSEMBLY REMOVAL / CALIPER ADJUSTMENT ........................................................................ 49
POTENTIOMETER (5K) TESTING AND REMOVAL ....................................................................................................... 50
POTENTIOMETER INSTALLATION AND ADJUSTMENT ........................................................................................ 50-51
POTENTIOMETER (25K) WHEEL DRIVE SPEED LIMIT TESTING ............................................................................... 51
ELECTRICAL SYSTEM ................................................................................................................................................ 52-65
BATTERIES / CHARGERS .............................................................................................................................................. 52
DESCRIPTION OF LOW VOLTAGE CUTOUT FEATURE .............................................................................................. 52
DESCRIPTION OF THE BATTERY CONDITION INDICATORS ..................................................................................... 53
BATTERY CHARGING, MAINTENANCE AND TESTING ......................................................................................... 53-54
ACTUATOR DRIVE NUT ADJUSTMENT .................................................................................................................. 54-55
FUNCTIONAL OVERVIEW OF MAIN CONTROL BOARD .............................................................................................. 56
DESCRIPTION OF CONTROL PANEL SYSTEM OVERLOAD INDICATORS ................................................................ 56
MAIN CONTROLLER DIAGNOSTIC SERVICE TEST MODE ................................................................................... 57-59
MAIN CONTROL BOARD SPECIAL PROGRAM OPTIONS ..................................................................................... 60-62
ELECTRICAL COMPONENT LOCATION ........................................................................................................................ 63
WIRING DIAGRAM .......................................................................................................................................................... 64
WIRING SCHEMATIC ...................................................................................................................................................... 65
Note:
All references to right, left, front, or rear in this manual are as seen from the operator’s stand-point.
TABLE OF CONTENTS