Service and Maintenance Manual - Models 450A/AJ Series II - SECTION A Introduction-Maintenance Safety Precautions

Oct 22, 2026

Uploaded by Kyle

Service and maintenance manual for aerial platform Models 450A/AJ Series II, containing mandatory maintenance safety guidance before performing inspection and servicing. Section A sets general precautions, emphasizing operator/owner responsibility for field work, safe handling of heavy components, and proper equipment support during lifting. It also details hydraulic system high-pressure risk, shutdown of power before adjustments or lubrication, and strict PPE and clothing rules. Additional points cover identical replacement parts, battery disconnection, approved non-flammable solvents, and restrictions on working under an elevated boom without safe blocking or props.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages472

Reading Time19 h 49 min

AccessFree to download

SECTION A . INTRODUCTION-MAINTENANCE SAFETY

PRECAUTIONS

A . GENERAL

B . HYDRAULIC SYSTEM SAFETY

C . MAINTENANCE

SECTION 1 - SPECIFICATIONS

Capacities

Tires

Engine

Specifications and Performance Data

Function Speeds

Torque Requirements

Lubrication

Major Component Weights

Pressure Settings-PSI (BAR)

Serial Number Location

Operator Maintenance

Draining Propane Regulator Oil Build Up

Propane Fuel Filter Replacement

Propane System Pressure Relief

SECTION 2 - GENERAL

Preparation, Inspection, and Maintenance

Pre-Start Inspection

Service and Maintenance Manual Models 450A/AJ Series II Prior To S/N 0300160835 P/N-3121180 December 3, 2012 SECTION A . INTRODUCTION-MAINTENANCE SAFETY PRECAUTIONS A . GENERAL This section contains general safety precautions which must be observed during aerial platform maintenance. 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 machine is safe to operate. MODIFICATION OR ALTERATION OF AN AERIAL WORK PLATFORM SHALL BE MADE ONLY WITH WRITTEN PERMISSION FROM THE MANUFACTURER. 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. C . MAINTENANCE FAILURE TO COMPLY WITH SAFETY PRECAUTIONS LISTED IN THIS SECTION COULD RESULT IN MACHINE DAMAGE, PERSONNEL INJURY OR DEATH AND IS A SAFETY VIOLATION. • WEAR APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT WHEN WORKING ON MACHINE. • 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 SERVICE AND OPERATOR MANUAL. • KEEP OIL, GREASE, WATER, ETC. WIPED FROM STANDING SURFACESAND 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 SHOULD ALWAYS BE DISCONNECTED DURING REPLACEMENT OF ELECTRICAL COMPONENTS. • KEEP ALL SUPPORT EQUIPMENT AND ATTACHMENTS STOWEDIN THEIR PROPER PLACE. • USE ONLY APPROVED, NON-FLAMMABLE CLEANING SOLVENTS. 3121180 – JLG Lift – A-1 REVISON LOG Original Issue Revised Revised Revised Revised Revised Revised Revised Revised -January 24, 2003 -March 14, 2003 -August 26, 2005 -February 15, 2006 -March 14, 2007 -October 10, 2007 -December 22, 2010 -November 1, 2012 -December 3, 2012 A-2 – JLG Lift – 3121180 SECTION NO. TITLE PAGE NO. SECTION A -INTRODUCTION-MAINTENANCE SAFETY PRECAUTIONS A General ......................................................................A-1 B Hydraulic System Safety .........................................................A-1 C Maintenance ..................................................................A-1 SECTION 1 -SPECIFICATIONS 1.1 Capacities ....................................................................1-1 1.2 Tires ..........................................................

FAQs

What is the owner/operator responsibility regarding safety during field inspection and maintenance?

Safety in this area is the responsibility of the owner/operator because the machine manufacturer has no direct control over field inspection and maintenance.

Why must system pressure be relieved before disconnecting hydraulic system components?

The hydraulic systems operate at extremely high potentially dangerous pressures, so every effort must be made to relieve system pressure before disconnecting or removing any portion.

What precautions must be followed before performing maintenance tasks like adjustments or lubrication?

Shut off all power controls before making adjustments, lubricating, or performing other maintenance, and disconnect the battery during replacement of electrical components.

Oct 22, 2026

Uploaded by Kyle