Skyjack SJ61T SJ66T Telescopic Boom Lift Service Manual 194312AE 2017

Description

Skyjack SJ61T SJ66T Telescopic Boom Lift Service Manual — 194312AE

This Skyjack SJ61T SJ66T Telescopic Boom Lift Service Manual, document number 194312AE and dated February 2017, is the complete service and maintenance guide for the SJ61T and SJ66T telescopic boom lifts. Covering serial numbers 97 001 396 to 97 001 832, this manual gives technicians and owners the procedures, specifications, and diagnostic information needed to keep these machines running safely and efficiently.

File Details

• Manual Type: Service Manual
• Brand: Skyjack
• Models Covered: SJ61T, SJ66T
• Language: English
• Page Count: 232
• File Format: PDF
• Document Number: 194312AE
• Date: February 2017
• Serial Range: SJ61T & SJ66T 97 001 396 to 97 001 832

Chapters Covered

The Skyjack SJ61T SJ66T service manual is organized into five main sections:

• Section 1 — Scheduled Maintenance: Operator’s responsibility for maintenance, service and maintenance guidelines, owner’s annual inspection record, pre-delivery and maintenance inspection checklist, scheduled maintenance inspections, and function tests.
• Section 2 — Maintenance Tables and Diagrams: Standard hose numbering system, aerial platform torque specifications, axle torque specifications, axle maintenance intervals, tire specifications, floor loading pressure, hydraulic specifications, specifications and features, dimension and reach diagrams for both models, and axle oscillation diagrams.
• Section 3 — System Component Identification and Schematics: Hydraulic symbol chart, electrical symbol chart, wire number and color code, hydraulic schematic parts list, electrical component parts list, rotary manifold and port identifications, brake manifold and port identifications, system and drive pump port identifications, drive motor port identifications, jib valve identification, main manifold port identification, generator control valves, main harness wiring diagram, ECU engine wiring diagrams, glow plug and EGR harnesses, engine interface harnesses, platform control console diagrams, base control console diagrams, and full electrical schematic diagrams.
• Section 4 — Troubleshooting: Electrical system troubleshooting covering all controls inoperative, no power to platform, engine cranking and starting issues, glow plug circuit, boom functions, turret rotate, telescope, platform rotate, jib functions, throttle control, brake release, drive and steer, and direction sensing. Hydraulic system troubleshooting covering all controls inoperative, boom functions, turret rotate, boom extend and retract, jib, platform rotation, platform leveling, brake release and engage, drive forward and reverse, high speed drive, steering, and axle oscillation and lock. Load sensing system (CE) troubleshooting.
• Section 5 — Procedures: Human Machine Interface (HMI) operation, user interface keys, selecting functionality, viewing OCM operation, unlocking and modifying OCM settings, OCM pin voltage reference, fly boom switch voltage references, platform controller voltage references, cable carrier repair, wear pad checks and replacement, boom section wear pad replacement, extension cylinder and boom cable inspection and replacement, wire rope tension and inspection, high pressure filter replacement, turret rotation gear backlash adjustment, swing drive motor gearbox oil check and change, battery replacement, bolt torque procedures, electronic tilt switch setup, rotation bearing axial wear check, engine oil and filter replacement, fuel filter replacement, air filter replacement, engine belt check, oil cooler check, GM map and IAT sensor, LPG temperature sensor, throttle actuator, engine coolant temperature sensor, ECU pin reference charts, fuse block layout, Kubota engine parameter display, diagnostic trouble codes, hydraulic tank filter and oil change, hydraulic brake pressure adjustment, standby pressure adjustment, high pressure adjustment, system relief valve adjustment, turret rotate relief valve adjustment, platform level relief valve adjustment, fly boom relief valve adjustment, charge pump pressure testing, forward and reverse drive pressure testing, axle oil changes, torque hub oil level check, axle gearbox oil level check and change, bleeding oscillating axle cylinders, pin brake adjustments, grease points for turret rotation bearing, turret rotation gear, drive axle, and drive shaft, and load sensing system calibration.

This manual is more than a maintenance schedule — it is a complete service reference for the SJ61T and SJ66T telescopic boom lifts. The hydraulic and electrical schematics alone are essential for anyone diagnosing complex faults, with port-by-port identification for the rotary manifold, brake manifold, main manifold, and both hydraulic pumps. The wiring diagrams include the main harness, ECU engine interface, glow plug and EGR circuits, and platform and base control console layouts for every engine option.

Engines Covered

• Deutz TD2.9L Diesel Engine
• Deutz D2011L04i Diesel Engine
• GM 3.0L Dual Fuel Engine (Gasoline/Propane)
• Kubota WG2503 2.5L Dual Fuel Engine (Gasoline/Propane)

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Why This Manual Matters

Working on a telescopic boom lift without the correct specifications and procedures leads to damage, downtime, and safety risks. This manual provides the exact torque values for critical fasteners — from the trunnion mount bolts and rear axle mounts to the swing drive motor, rotation gear, and rotary actuator bolts. It gives you the correct hydraulic pressures for the brake system, standby pressure, high pressure, and each individual relief valve, along with the tire specifications, floor loading pressures, axle maintenance intervals, and wire rope inspection criteria that determine when boom cables must be replaced.

The troubleshooting sections are structured as systematic diagnostic guides. Each symptom is broken down into probable causes and remedies, with specific wire numbers, relay designations, valve coils, and sensor checks identified. Whether the machine won’t crank, a boom function won’t operate, the brake won’t release, or the load sensing system triggers a fault, the manual walks through the diagnostic path step by step.

The procedures section covers the full range of service tasks, from routine oil changes to major repairs like boom section disassembly, extension cylinder and cable replacement, wear pad shimming, and electronic tilt switch calibration. Each procedure includes torque specifications, fluid capacities, and adjustment values where applicable.

What You Get

This Skyjack SJ61T SJ66T Telescopic Boom Lift Service Manual is delivered as an instant PDF download. There is no shipping and no waiting — the file is available immediately after purchase. The PDF can be viewed on any device, including laptops, tablets, and smartphones, and pages can be printed for use in the shop or field. Whether you are performing scheduled maintenance, diagnosing an electrical or hydraulic fault, or undertaking a major repair, this manual provides the information you need in a convenient, portable format.