Service and Maintenance Manual - JLG Lift - 3120840 - Section A - Introduction-Maintenance Safety

Oct 23, 2026

Service and Maintenance Manual for JLG Lift model families 600S/600SJ and 660SJ, plus 600A/600AJ, covering ADE (JLG Control System) identification and safety guidance. It specifies which serial number ranges incorporate ADE and which earlier serial numbers also use EPBCS. Section A details maintenance safety precautions, including modification restrictions, hydraulic system pressure relief, and procedures to prevent injury, equipment damage, and safety violations. It also lists part/instance references and a revision log dated November 22, 2016.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages270

Reading Time11 h 20 min

AccessFree to download

SECTION A - INTRODUCTION-MAINTENANCE SAFETY

PRECAUTIONS

A GENERAL

B HYDRAULIC SYSTEM SAFETY

C MAINTENANCE

SECTION 1 - SPECIFICATIONS

Service and Maintenance Manual Models 600S/SJ 660SJ 600A/AJ Prior to S/N 0300080000 P/N-3120840 November 22, 2016 ADE Identification All 600S, 600SJ, and 660SJ machines from S/N 61927 incorporate ADE (JLG Control System) . The following machine serial numbers prior to S/N 61927 also utilize EPBCS: 58993, 58998, 59222, 59223, 59275, 59281, 59315, 59319, 59352, 59358, 59631, 59769, 60253, 60254, 60286, 60642, 60645, 61120, 61257, 61402, 61440, 61491, 61833, 61840, 61875, and 61878. All 600A and 600AJ machines from S/N 64249 incorporate ADE (JLG Control System) . The following machine serial numbers prior to S/N 64249 also utilize EPBCS: 63908, 63912, 63932, 63936, 63938, 63954, 63959, and 63963. A Machine that incorporates ADE (JLG Control System) can be outwardly identified by the analyzer connection at the base of the platform control box as shown by the arrow. – JLG Lift – This page left blank intentionally. – JLG Lift – SECTION A . INTRODUCTION-MAINTENANCE SAFETY PRECAUTIONS A GENERAL This section contains the general safety precautions which must be observed during maintenance of the aerial platform. It is of utmost importance that maintenance personnel pay strict attention to these warnings and precautions to avoid possible injury to themselves or others, or damage to the equipment. A maintenance program must be followed to ensure that the machine is safe to operate. MODIFICATION OF THE MACHINE WITHOUT CERTIFICATION BY A RESPONSIBLE AUTHORITY THAT THE MACHINE IS AT LEAST AS SAFE AS ORIGINALLY MANUFACTURED, IS A SAFETY VIOLATION. The specific precautions to be observed during maintenance are inserted at the appropriate point in the manual. These precautions are, for the most part, those that apply when servicing hydraulic and larger machine component parts. Your safety, and that of others, is the first consideration when engaging in the maintenance of equipment. Always be conscious of weight. Never attempt to move heavy parts without the aid of a mechanical device. Do not allow heavy objects to rest in an unstable position. When raising a portion of the equipment, ensure that adequate support is provided. SINCE THE MACHINE MANUFACTURER HAS NO DIRECT CONTROL OVER THE FIELD INSPECTION AND MAINTENANCE, SAFETY IN THIS AREA RESPONSIBILITY OF THE OWNER/OPERATOR. B HYDRAULIC SYSTEM SAFETY It should be noted that the machines hydraulic systems operate at extremely high potentially dangerous pressures. Every effort should be made to relieve any system pressure prior to disconnecting or removing any portion of the system. Relieve system pressure by cycling the applicable control several times with the engine stopped and ignition on, to direct any line pressure back into the reservoir. Pressure feed lines to system components can then be disconnected with minimal fluid loss. C MAINTENANCE FAILURE TO COMPLY WITH SAFETY PRECAUTIONS LISTED IN THIS SECTION MAY RESULT IN MACHINE DAMAGE, PERSONNEL INJURY OR DEATH AND IS A SAFETY VIOLATION. • ENSURE REPLACEMENT PARTS OR COMPONENTS ARE IDENTICAL OR EQUIVALENT TO ORIGINAL PARTS OR COMPONENTS. • NO SMOKING IS MANDATORY. NEVER REFUEL DURING ELECTRICAL STORMS. ENSURE THAT FUEL CAP IS CLOSED AND SECURE AT ALL OTHER TIMES. • REMOVE ALL RINGS, WATCHES AND JEWELRY WHEN PERFORMING ANY MAINTENANCE. • DO NOT WEAR LONG HAIR UNRESTRAINED, OR LOOSE-FITTING CLOTHING AND NECKTIES WHICH ARE APT TO BECOME CAUGHT ON OR ENTANGLED IN EQUIPMENT. • OBSERVE AND OBEY ALL WARNINGS AND CAUTIONS ON MACHINE AND IN SERVICEMANUAL. • KEEP OIL, GREASE, WATER, ETC. WIPED FROM STANDING SURFACES AND HAND HOLDS. • USE CAUTION WHEN CHECKING A HOT, PRESSURIZED COOLANT SYSTEM. • NEVER WORK UNDER AN ELEVATED BOOM UNTIL BOOM HAS BEEN SAFELY RESTRAINED FROM ANY MOVEMENT BY BLOCKING OR OVERHEAD SLING, OR BOOM SAFETY PROP HAS BEEN ENGAGED. • BEFORE MAKING ADJUSTMENTS, LUBRICATING OR PERFORMING ANY OTHER MAINTENANCE, SHUT OFF ALL POWER CONTROLS. • BATTERY SHOUL

FAQs

Which models incorporate ADE (JLG Control System) according to the manual?

The manual states that all 600S, 600SJ, and 660SJ machines from the specified serial range incorporate ADE (JLG Control System), and all 600A and 600AJ machines from the specified serial range incorporate ADE as well.

How can a machine that incorporates ADE be outwardly identified?

It can be identified by the analyzer connection at the base of the platform control box, as shown by the arrow in the manual.

What is the required approach for hydraulic system safety during maintenance?

Relieve system pressure by cycling the applicable control several times with the engine stopped and ignition on, directing line pressure back into the reservoir before disconnecting system components.

Oct 23, 2026

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