Published 08/16/19 Control # 112-05 1-1
500E2 SERVICE MANUAL INTRODUCTION
National Crane
SECTION 1
INTRODUCTION
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Supplemental Information . . . . . . . . . . . . . . . . . . . 1-1
New Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Basic Nomenclature . . . . . . . . . . . . . . . . . . . . . . . 1-2
General Maintenance . . . . . . . . . . . . . . . . . . . . . . . 1-2
Cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Removal and Installation . . . . . . . . . . . . . . . . . . . 1-3
Disassembly And Assembly . . . . . . . . . . . . . . . . . 1-3
Pressing Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Shims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Gaskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Hydraulic Systems . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Jump Starting Hazard . . . . . . . . . . . . . . . . . . . . . . 1-5
Charging the Batteries . . . . . . . . . . . . . . . . . . . . . 1-5
Connectors, Harnesses, Wires, and
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Dielectric Grease . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Fatigue Of Welded Structures . . . . . . . . . . . . . . . . 1-6
Loctite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Fasteners and Torque Values . . . . . . . . . . . . . . . . 1-7
Weld Studs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Torque Wrenches . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Using Torque Wrench Extensions . . . . . . . . . . . . 1-20
Wire Rope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Keeping Records . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Environmental Conditions . . . . . . . . . . . . . . . . . . 1-22
Dynamic Shock Loads . . . . . . . . . . . . . . . . . . . . . 1-22
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Precautions and Recommendations
During Inspection. . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Wire Rope Replacement . . . . . . . . . . . . . . . . . . . 1-23
Care of Wire Rope . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Boom Extension and Retraction Cables . . . . . . . 1-24
Wire Rope Replacement (All Wire Rope) . . . . . . 1-25
Seizing Wire Rope . . . . . . . . . . . . . . . . . . . . . . . . 1-25
GENERAL
This manual has been compiled to assist you in properly
operating and maintaining your Model 500E2 Series
National Crane.
Before placing the crane in to service, all operators and
persons working around the crane must thoroughly read and
understand the contents of the Operators Handbook
pertaining to Safety, Operation and Maintenance. Before
moving a vehicle equipped with the crane, information
relating to transporting the vehicle must be read and
observed.
This manual must be retained with the machine for use by
subsequent operating personnel.
Information this manual does not replace federal, state or
local regulations, safety codes or insurance requirements
The National Crane has been designed for maximum
performance with minimum maintenance. With proper care,
years of trouble-free service can be expected.
Constant improvement and engineering progress makes it
necessary that we reserve the right to make specification
and equipment changes without notice.
National Crane and our Distributor Network want to ensure
your satisfaction with our products and customer support.
Your local distributor is the best equipped and most
knowledgeable to assist you for parts, service and warranty
issues. They have the facilities, parts, factory trained
personnel, and the information to assist you in a timely
manner. We request that you first contact them for
assistance. If you feel you need factory assistance, please
ask the distributor’s service management to coordinate the
contact on your behalf.
Supplemental Information
Supplemental Information regarding Safety & Operation,
Specifications, Service & Maintenance, Installation, and
parts for options such as remote controls, augers, varying
control configurations, baskets, grapples, etc. is included in
separate sections of this manual, if applicable.