JLG 120HX Operator Manual - Manual (Page 18)

SECTION 2 - PREPARATION AND INSPECTION
2-2 – JLG Lift – 3120818
Turntable
1. Check turntable and turntable lock for damage,
loose or missing parts, and security. Check swing
drive hub, hydraulic motor, and brake for damage,
loose or missing parts, hydraulic lines and compo-
nent housings for evidence of leakage; pinion for
proper mesh with swing gear.
2. Check swing bearing for damage, wear, lubrication
and loose or missing bearing bolts.
3. Check solenoid valves and hydraulic lines for dam-
age, leakage, security and electrical connections for
tightness and evidence of corrosion.
4. Check ground controls for damage, loose or miss-
ing parts, security, electrical connections for evi-
dence of corrosion and tightness and wiring for
insulation damage. Assure that all switches function
properly.
5. Check battery for damage, loose or missing vent
caps, electrical connections for tightness, and evi-
dence of corrosion, holddown brackets for tight-
ness, and electrolyte for proper water level. Add only
clean distilled water to battery.
6. Check engine and accessories for damage, loose or
missing parts, leakage and security. Check throttle
solenoid and linkage for damage, electrical connec-
tions for tightness, and evidence of corrosion and
wiring for insulation damage.
7. Check fuel lines for damage, leakage and security.
8. Check all access doors for damage, proper opera-
tion of latches, props and security.
9. Check fuel tank for damage, leakage and filler cap
for security.
10. Check hydraulic reservoir and hydraulic lines for
damage, leakage and security.
NOTE: JLG recommends replacing the hydraulic filter ele-
ment after the first 50 hours of operation and then
every 300 hours thereafter, unless system indicator
require earlier replacement.
11. Check all cylinder pin and shaft retaining hardware
for security and wear.
12. Check all electrical cables for defects, damage,
loose or corroded connections.
Boom
1. Check all cylinder pin and shaft retaining hardware
for security and wear.
2. Check hydraulic lines, electrical cable and track
assemblies for damage, missing parts and security.
3. Check lift cylinder and cross pins and hydraulic lines
for damage, wear, leakage and security.
4. Check boom pivot pins for damage, wear, and secu-
rity.
5. Check hydraulic line and electrical cable track
assembly for visible damage, loose or missing parts,
and security.
6. Check boom for damage, missing parts and secu-
rity.
7. Check boom wear pads for damage, wear and secu-
rity.
8. Check boom telescope cylinder and cross pins and
hydraulic lines for damage, wear, leakage and secu-
rity.
9. Check platform leveling cylinder and cross pins and
hydraulic lines for damage, wear, leakage and secu-
rity.
10. Check boom/platform pivot pin for damage, wear
and security.
11. Check horizontal and capacity limit switches
mounted on turntable for security of mounting, dam-
age to switch arms and rollers; and for debris.
12. Check boom tape for correct length and tearing or
defacing at any point.
Extend-A-Reach
1. Check the slave cylinder, weld link and cross pins,
and lines for visible damage, wear, lubrication, evi-
dence of leakage, and security.
2. Check extend-a-reach for visible damage, loose or
missing parts, and security.
3. Check hydraulic lines and electrical cable for dam-
age, missing parts and security.