JLG 450A_AJ Series II Service Manual - Manual (Page 19)

SECTION 1 - SPECIFICATIONS
3121259 – JLG Lift – 1-3
1.5 FUNCTION SPEEDS
Machine Orientation When Doing Speed
Tests
Lift: Boom retracted. Telescope retracted. Lift up, record
time, Lift down, record time.
Swing: Boom at full elevation. Telescope retracted. Swing
turntable to end stop. Swing opposite direction, record
time. Swing opposite direction, record time.
Telescope: Boom at full elevation; Telescope retracted;
Telescope out, record time. Telescope In, record time.
Drive: Test to be done on a smooth level surface. Set
Drive Select Switch to 2WD High Engine. Start approxi-
mately 25 ft (7.62 m) from starting point so unit is at maxi-
mum speed when starting test. Record results for a 200 ft.
(60.96 m) course. Drive forward, record time. Drive
reverse, record time.
Drive (Above Horizontal): Test should be done on a
smooth level surface. Set Drive Select Switch to 2WD High
Engine. Select Platform Speed Knob out of creep speed.
This verifies switches are working when boom is above
horizontal. Results should be recorded for a 50 ft course.
Drive forward, record time. Drive reverse, record time.
Platform Rotate: Platform level and completely rotated
one direction. Rotate opposite direction, record time.
Rotate other direction, record time.
Articulating Jib: Platform level and centered with boom.
Start with Jib down. Jib up, record time. Jib down, record
time.
Lower Lift: Upper Boom horizontal. Telescoped In. Lower
Lift up, record time. Lower lift down, record time.
Test Notes
1. Start stop watch with function, not with controller or
switch.
2. Drive test results reflect 12x16.5 tires.
3. All speed tests are run from platform. These speeds
do not reflect ground control operation.
4. Platform speed knob control must be at full speed
(turned clockwise completely).
5. Test with oil temperature above 100° F (38° C). Func-
tion speeds vary if hydraulic oil is cold and thick.
6. Some flow control functions may not work with
speed knob clicked into creep position.
1.6 TORQUE REQUIREMENTS
Table 1-12. Function Speeds (In Seconds)
Function 450A 450AJ
Main Lift Up 24-28 24-28
Main Lift Down 20-24 20-24
Swing Right & Left* 70-90 70-90
Telescope Out 18-22 16-20
Telescope In 12-16 9-14
Platform Rotate Right & Left** 25-32 25-32
Jib Up N/A 21-31
Jib Down N/A 19-25
Lower Lift Up 30-38 30-38
Lower Lift Down 22-28 22-28
Drive (2WD High Engine) 38-41
(3.5 MPH)
38-41
(3.5 MPH)
Drive (4WD High Engine) 29-31
(4.5 MPH)
29-31
(4.5 MPH)
Drive above Horizontal
(50 ft.) 46-68
(0.75 - 0.50
MPH)
46-68
(0.75 - 0.50
MPH)
*Max 10% Difference Between Left & Right
**Max 15% Difference Between Left & Right
Table 1-13. Torque Specification
Description Torque Value Interval Hours
Wheel Lugs 170 ft. lb.
(230 Nm)
150
Semi-Track
Wheel Lugs 90 ft. lb.
(122 Nm)
150
Swing Bearing
(Loctite) 190 ft. lb.
( 257 Nm)
50/600*
Starter Solenoid
Contacts
Coil
95 in. lbs. (9.5 Nm)
40 in. lbs. (4 Nm)
As required
Drive Hub to Axle 240 ft. lb.
(325 Nm)
As required
Drive Motor to Axle 120 ft. lb.
(163 Nm)
As required
*Check swing bearing bolts for security after first 50 hours of operation
and every 600 hours thereafter.