JLG 450AJ ANSI Operator Manual - Manual (Page 20)

SECTION 2 - PREPARATION AND INSPECTION
2-4 – JLG Lift – 3120748
15. Check Upper Boom pivot pin for damage, wear,
lubrication and security.
16. Check Upper Boom for damage, missing parts and
security.
17. Check Upper Boom wear pads for damage, missing
parts and security.
18. Check Upper Boom telescope cylinder, cross pins
and hydraulic lines for damage, wear, lubrication,
leakage and security.
19. Check Platform Leveling Cylinder, cross pins and
hydraulic lines for damage, wear, lubrication, leak-
age and security.
Platform
1. Check platform and control console for damage,
loose or missing parts, and security.
2. Check control switches and levers for damage,
loose or missing parts and security. Assure that
levers function properly.
3. Check control switches, levers and electrical con-
nections for tightness and evidence of corrosion,
and wiring for defects and chafing damage. Assure
that switches function properly.
4. Check access gate hinges, stop, and latch for
proper operation, damage and security.
5. Check platform rotator mechanism for proper opera-
tion, damage, security. Check hydraulic lines for
leakage, damage and security.
NOTE: Check all DANGER, WARNING, CAUTION and
INSTRUCTION placards for legibility and security on
the entire machine.
Torque Requirements
The Torque Chart (Figure 2-6.) consists of standard torque
values based on bolt diameter and grade, also specifying
dry and wet torque values in accordance with recom-
mended shop practices. This chart is provided as an aid
to the operator in the event he/she notices a condition that
requires prompt attention during the walk-around inspec-
tion or during operation, until the proper service personnel
can be notified. The Service and Maintenance manual
provides specific torque values and periodic maintenance
procedures with a listing of individual components. Utiliz-
ing this Torque Chart in conjunction with the preventive
maintenance section in the Service and Maintenance
manual will enhance safety, reliability, and performance of
the machine.