JLG X17JP X500AJ X20JP X600AJ X26JP X770AJ Service and Maintenance Manual 3121623 Rev E 2018

Description

JLG X17JP X500AJ X20JP X600AJ X26JP X770AJ Service and Maintenance Manual – Document 3121623 Rev E

This is the full JLG X17JP X500AJ X20JP X600AJ X26JP X770AJ Service and Maintenance Manual, released under document number 3121623 at Revision E dated June 29, 2018. It covers six compact crawler boom lift models across CE and ANSI configurations and is written for the qualified JLG equipment mechanic and factory-certified service technician who is responsible for placing the machine into operation readiness and keeping it in a safe operating condition. Rather than a short operator booklet, this is the complete workshop reference: capacities, torque charts, pressure settings, component weights, hydraulic schematics, cylinder repair procedures, engine diagnostics, CANBUS troubleshooting, SkyGuard installation, and the full service menu tree of the JLG Control System.

File Details

• Manual type: Service and Maintenance Manual
• Brand: JLG Industries, Inc.
• Document number: 3121623
• Revision: Rev E – June 29, 2018
• Revision history: Original Issue A (Oct 21, 2013), Rev B (Nov 3, 2016), Rev C (Mar 29, 2017), Rev D (Mar 27, 2018), Rev E (Jun 29, 2018 – Revised Covers)
• Language: English
• Format: PDF (digital download)
• Sections: Section 1 Specifications · Section 2 General · Section 3 Chassis & Turntable · Section 4 Boom & Platform · Section 5 Hydraulics · Section 6 JLG Control System · Section 7 General Electrical Information & Schematics

Chapters Covered

The JLG X17JP X500AJ X20JP X600AJ X26JP X770AJ service manual is organized into seven top-level sections with detailed sub-sections. The main content areas are:

IMAGES PREVIEW

• Section 1 – Specifications: Capacities, track specifications, ground bearing pressure, power source configurations, Honda iGX390 / iGX440 / Hatz 1B40 / Perkins 402D / Kubota D902-E3B engine specifications, reach specifications, dimensional data, function speed data, hydraulic pressure settings, major component weights, lubrication, hydraulic oil temperature range, serial number locations, fastener torque charts (SAG, SAE and metric).
• Section 2 – General: Machine preparation, inspection and maintenance, pre-start / pre-delivery / frequent / annual inspection responsibilities, service and workmanship guidelines, cleanliness, component removal and installation, pressure-fit parts, bearings, gaskets, bolt usage and torque, hydraulic lines and electrical wiring, hydraulic system care, lubrication specifications, cylinder drift test, pins and composite bearing repair, welding on JLG equipment.
• Section 3 – Chassis & Turntable: Rubber track maintenance (tension checking, loosening/tightening, replacement), undercarriage components, roller lower wheel and track adjuster replacement, sprocket and gear motor removal and installation, final drive torque values, axle extension removal, Bonfiglioli final drive identification, IMO swing drive technical data, transport, positioning and bolting, maintenance schedule and lubrication, Honda iGX440 engine, Hatz 1B40 engine, Perkins 402D engine, Kubota D902 diesel engine, speed sensor installation and adjustment, diesel RPM control, thermic engine replacement, electric motor replacement.
• Section 4 – Boom & Platform: Boom maintenance, removal and disassembly of the main boom, boom disassembly for X20JP / X600AJ, inspection of ropes and pulleys, wire rope tension adjustment procedure, Moveco ARP series rotary actuator technical data, disassembly and assembly, counterbalance valve installation, boom rotation sensor assembly for X26JP / X770AJ, proximity sensor adjustment for X17JP / X500AJ / X20JP / X600AJ, platform removal and installation, load cell and footswitch removal and installation, SkyGuard installation for one-person and two-person platforms, SkyGuard anti-trapping system function tables and schematics.
• Section 5 – Hydraulics: Main components identification and location, hydraulic system pump and pressure lines, ground component hydraulic system, outriggers, drive gear motors, tracks widening, boom component hydraulic system (first and second booms, third boom, telescope, jib, basket levelling, basket rotation, turret rotation, emergency gravity descent system), cylinder repair specifications, cylinder disassembly and assembly with and without sensor, magnetic sensor removal, threaded piston disassembly, seals head replacing, cylinder inspection, bushing replacement, cylinders bleeding, replacement hydraulic pump, hydraulic pump repair with seal kit, hydraulic component start-up procedures and recommendations, pressure setting procedure for chassis and turntable functions, outriggers auto-retraction.
• Section 6 – JLG Control System: Introduction, machine ignition, platform remote control station, LCD display screen and icon descriptions, joystick controls, tilt conditions drive cut-out, speed control conditions per model, push buttons, CANBUS communications, CAN bus device positions and layout, CAN diagnostics and CAN timeout menu, software check, sensors and devices not communicating through CAN-BUS, inclination sensor system, load cell system, rotation sensor system, electric motor, 12 V battery, battery charge system, calibration requirements, platform remote control service, service menu (INPUT/OUTPUT, LANGUAGE, ERRORS, RAMP, CURRENT, WORKING HOURS, SETUP, JOYSTICK), machine setup menus 1 through 7 including tilt sensor calibration, version and engine type, machine configuration, swing sensor calibration (X26JP / X770AJ), load sensing system calibration, time and date setup, joystick calibration.
• Section 7 – General Electrical Information & Schematics: General electrical information, multimeter basics (grounding, backprobing, Min/Max, polarity, scale, voltage/resistance/continuity/current measurement), continuity measurement over long distances, electrical schematics manuals list, X17JP / X500AJ and X20JP / X600AJ hydraulic schematics, X26JP / X770AJ hydraulic schematics.

Taken as a whole, this document is a complete service-bay reference for the six-model compact crawler boom lift family. It pairs the fast-access data a mechanic needs in the first five minutes of a job (capacities, torque charts, pressure settings, component weights) with the step-by-step repair procedures needed when a component actually comes apart — cylinder resealing, sprocket and gear motor removal, boom disassembly, rotary actuator overhaul, pump seal replacement. Diagnostic material is equally developed: engine LED flash codes for the Honda iGX, harness by-pass procedures for Honda, Hatz, Perkins and Kubota diesel engines, the input/output menu tree for reading live switch and sensor states, and the full CAN timeout table for chasing intermittent CANBUS faults.

Covered Models and Power Sources

The JLG 3121623 service manual covers three base machines — X17JP / X500AJ, X20JP / X600AJ and X26JP / X770AJ — in both CE (JP) and ANSI (AJ) designations. Engine coverage spans the following:

• Gasoline: Honda iGX390 (11.7 hp / 8.7 kW @ 3600 rpm) and Honda iGX440 (12.7 hp / 9.5 kW @ 3600 rpm) — usage varies by serial number C170000892 / C170000893
• Diesel: Hatz 1B40 (10 hp / 7.46 kW), Perkins 402D / 402.05 (14 hp / 10.44 kW), Kubota D902 (21.6 hp / 16.1 kW)
• Lithium: 90 or 100 Ah 72 V pack (X17JP / X500AJ, X20JP / X600AJ) and 100 Ah 83 V pack (X26JP / X770AJ)
• AC Electric Motor: 110 V 50 Hz (2.2 kW), 120 V 60 Hz (1.2 kW), 230 V 50 Hz (2.2 kW), 230 V 60 Hz (2.2 kW)

Serial-number breakpoints referenced throughout the manual include S/N-C170000892, S/N-C170000893 and S/N-C170000944, which govern fuel tank capacities, SkyGuard kit fitment, load sensing system calibration procedure and electrical schematic selection.

What This Service Manual Enables You to Do

Working from the JLG X17JP X500AJ X20JP X600AJ X26JP X770AJ Service and Maintenance Manual, a qualified mechanic can perform scheduled preventative maintenance, diagnose hydraulic and electrical faults, reseal cylinders with and without internal sensors, replace drive gear motors and sprockets, overhaul the swing drive, adjust wire rope tension on the telescopic boom, calibrate the tilt sensor, load sensing system, swing sensor and joysticks, install the SkyGuard anti-trapping system, and reference the hydraulic schematics for the correct routing of every pressure line on the machine.

Correct procedures and correct specifications matter on this class of equipment. The manual gives the exact torque values for the final drive and sprocket bolts (from M10 x 18 at 50 Nm through M12 x 30 at 86 Nm depending on model), the hydraulic pressure settings for the undercarriage and tower control valves, the reduction drive speed pressure (26 bar / 380 PSI on X17JP / X500AJ and X26JP / X770AJ), the cylinder drift limits by bore diameter, the permissible track tension (10–15 mm), and the factory calibration passwords that unlock the machine setup menus on the JLG Control System. Getting these values wrong is how a lift ends up on the ground; getting them right is what keeps it in safe working order.

How You Receive the Manual

This JLG compact crawler boom lift service and maintenance manual is delivered as an instant PDF download immediately after payment. There is no shipping, no waiting on a physical book, and no region restriction. The file opens on any desktop, laptop, tablet or smartphone PDF reader, every page can be printed for the shop floor, and you can keep a clean working copy on a USB stick or laptop and print a fresh set of pages when they get greasy. Whether you are servicing a single machine in your fleet or running a rental yard with all six models in the field, the JLG 3121623 Rev E manual is the reference the job calls for.