JLG 450A_AJ Series II Service Manual - Manual (Page 34)

SECTION 2 - GENERAL
2-2 – JLG Lift – 3121290
2.2 SERVICE AND GUIDELINES
General
The following information is provided to assist you in use and
application of service and maintenance procedures contained
in this book.
Safety and Workmanship
Your safety, and that of others, is the first consideration during
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,
always provide adequate support.
Cleanliness
1. The most important single item in preserving the long
service life of a machine is to keep dirt and foreign mate-
rials out of vital components. Shields, covers, seals, and
filters are provided to keep air, fuel, and oil supplies
clean. These items must be maintained on a schedule to
function properly.
2. When air, fuel, or oil lines are disconnected, clean adja-
cent areas as well as openings and fittings themselves.
As soon as a line or component is disconnected, cap or
cover all openings to prevent entry of foreign matter.
3. Clean and inspect all parts during service or mainte-
nance. Ensure passages and openings are unobstructed.
Cover all parts to keep them clean. Be sure parts are
clean before they are installed. New parts should remain
in their containers until ready for use.
Components Removal and Installation
1. Use adjustable lifting devices if mechanical assistance is
needed. All slings (chains, cables, etc.) should be parallel
to each other and as near perpendicular as possible to
top of part being lifted.
2. Should it be necessary to remove a component on an
angle, keep in mind the capacity of an eyebolt or similar
bracket lessens, as the angle between the supporting
structure and component becomes less than 90
degrees.
3. If a part resists removal, check to see whether all nuts,
bolts, cables, brackets, wiring, etc., have been removed
and no adjacent parts are interfering.
Table 2-1. Inspection and Maintenance
Type Frequency
Primary
Responsibility
Service
Qualification
Reference
Pre-Start Inspection Prior to use each day; or
At each Operator change.
User or Operator User or Operator Operation and Safety Manual
Pre-Delivery Inspection Prior to each sale, lease, or
rental delivery.
Owner, Dealer, or User Qualified JLG Mechanic Service and Maintenance Manual
and applicable JLG inspection form.
Frequent Inspection In service for 3 months or 150 hours, whichever
comes first; or
Out of service for a period of more than 3 months; or
purchased used.
Owner, Dealer, or User Qualified JLG Mechanic Service and Maintenance Manual
and applicable JLG inspection form.
Annual Machine Inspec-
tion
Annually, no later than 13 months from the date of
the prior inspection.
Owner, Dealer, or User Factory-Trained Service
Technician
(Recommended)
Service and Maintenance Manual
and applicable JLG inspection form.
Preventative
Maintenance
At intervals as specified in the Service and Mainte-
nance Manual.
Owner, Dealer, or User Qualified JLG Mechanic Service and Maintenance Manual