JLG 800A_AJ Parts Manual User Manual
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TABLE OF CONTENTS
FIGURE NO.
TITLE
PAGE NO.
AXLE AND STEERING INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
TIRE AND WHEEL INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
DRIVE HUB ASSEMBLIES (SN 0300069000 TO SN 0300083332) . . . . . . . . . . . . . . . 1-12
DRIVE HUB ASSEMBLY (SN 0300083332 TO SN 0300140000) . . . . . . . . . . . . . . . . . 1-16
DRIVE MOTOR ASSEMBLY (SN 0300069000 TO SN 0300083332) . . . . . . . . . . . . . . 1-20
DRIVE MOTOR ASSEMBLY (ORIGINAL EQUIPMENT) (SN 0300083332 TO
SN 0300140000) (4 BOLT ASSEMBLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
DRIVE MOTOR ASSEMBLY (SERVICE REPLACEMENT) (SN 0300083332 TO
SN 0300140000) (5 BOLT ASSEMBLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
DRIVE VALVES & SHIELDS INSTALLATIONS (SN 0300069000 TO
SN 0300083332). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
DRIVE VALVES & SHIELDS INSTALLATIONS (SN 0300083332 TO
SN 0300140000). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
TOW PACKAGE INSTALLATION (2WS ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
CONTROL VALVES & HORN INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
MAIN CONTROL VALVE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
ACCESSORY VALVE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
AUXILIARY PUMP ASSEMBLY (SN 0300109067 TO SN 0300140000) . . . . . . . . . . . . 2-12
TURNTABLE BEARING AND SWING DRIVE INSTALLATION . . . . . . . . . . . . . . . . . . . 2-16
SWING MOTOR/HUB ASSEMBLY (SN 0300069000 TO SN 0300134353) . . . . . . . . . 2-18
SWING MOTOR/HUB ASSEMBLY (SN 0300134353 TO SN 0300140000) . . . . . . . . . 2-24
CATERPILLAR ENGINE INSTALLATION (SN 0300069000 to SN 0300139400) . . . . . 2-28
CATERPILLAR ENGINE INSTALLATION (SN 0300139400 TO SN 0300140000). . . . . 2-38
2500W GENERATOR INSTALLATION - CATERPILLAR MACHINES (OPTIONAL). . . . 2-46
DEUTZ ENGINE INSTALLATION (SN 0300069000 TO SN 0300077500) . . . . . . . . . . 2-50
DEUTZ ENGINE INSTALLATION (SN 0300077500 TO SN 0300140000) . . . . . . . . . . 2-56
2500W GENERATOR INSTALLATION - DEUTZ MACHINES (OPTIONAL). . . . . . . . . . 2-68
PISTON PUMP ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
TANK INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76
ROTARY COUPLING INSTALLATION (SN 0300069000 TO SN 0300083332) . . . . . . 2-80
ROTARY COUPLING INSTALLATION (SN 0300083332 TO SN 0300137975). . . . . . . 2-82
ROTARY COUPLING INSTALLATION (SN 0300137975 TO SN 0300140000). . . . . . . 2-86
GROUND CONTROL BOX ASSEMBLY (WITHOUT UGM) . . . . . . . . . . . . . . . . . . . . . . 2-90
GROUND CONTROL BOX ASSEMBLY (WITH UGM). . . . . . . . . . . . . . . . . . . . . . . . . . 2-94
ELECTRICAL OPTIONS INSTALLATION (TURNTABLE MOUNTED) . . . . . . . . . . . . . . 2-98
HOODS INSTALLATION (SN 0300069000 TO SN 0300089982) . . . . . . . . . . . . . . . . . 2-102
HOODS INSTALLATION (SN 0300089982 TO SN 0300140000) . . . . . . . . . . . . . . . . . 2-106
ENGINE TRAY JACK INSTALLATION (OPTIONAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-112
BOOM AND CYLINDER INSTALLATION - 800A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
BOOM AND CYLINDER INSTALLATION - 800AJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
TOWER BOOM ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
MAIN BOOM ASSEMBLIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
ROTATOR ASSEMBLY (FRONT ENTRY PLATFORM) . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
ROTATOR ASSEMBLY (SIDE ENTRY PLATFORM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
VALVE AND LIMIT SWITCH INSTALLATIONS (BOOM MOUNTED). . . . . . . . . . . . . . . 3-24