JLG 660SJ Service Manual - Manual (Page 19)

SECTION 1 - SPECIFICATIONS
3121298 – JLG Lift – 1-3
1.6 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 off center and stop. Swing opposite direction and
start test when centered. This eliminates controller ramp up
and ramp down affecting times.
Telescope: Boom at full elevation; Telescope retracted; Tele-
scope 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 approximately 25 ft
(7.62 m) from starting point so unit is at maximum 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.
Jib: Platform level and centered with boom. Start with Jib
down. Jib up, record time. Jib down, record time.
Test Notes
1. Start stop watch with function, not with controller or
switch.
2. Drive test results reflect 12x16.5 or 33/1550x16.5 air or
foam-filled tires.
3. All speed tests are run from platform. 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). Function
speeds vary if hydraulic oil is cold and thick.
6. Some flow control functions may not work with speed
knob clicked into creep position.
1.7 TORQUE REQUIREMENTS
Table 1-8. Function Speeds (In Seconds)
Function 600S 600SJ
Lift Up 46 - 60 46 -60
Lift Down 33 - 43 33 - 43
Swing Right & Left* 79 - 101 79 - 101
Telescope In 25 - 33 25 - 33
Telescope Out 50 - 67 50 - 67
Platform Rotate Right & Left** 16 - 25 25-32
Jib Up N/A 22 - 34
Jib Down N/A 16 - 26
Drive (2WD & 4WD GM Engine) 30-34
(4.25 MPH)
30-34
(4.25 MPH)
Drive (2WD & 4WD Deutz Engines) 34-38
(4.02 MPH)
34-38
(4.02 MPH)
Drive above Horizontal

(50 ft.)
46-54
(0.68 MPH)
46-54
(0.68 MPH)
*Max 10% Difference Between Left & Right

**Max 15% Difference Between Left & Right
Table 1-9. Torque Requirements
Description Torque Value (Dry)
Interval
Hours
Bearing To Chassis 190 ft. lbs.
(258 Nm)
50/600*
Bearing To Turntable 190 ft. lbs.
(258 Nm)
50/600*
Wire Rope 15 ft. lbs (20 Nm) 150
Wheel Lugs 170 ft. lbs (231 Nm) 150
Engine Mounting Bolts 165 ft. lbs. (231 Nm) A/R
Engine Manifold Mounting Bolts 30 ft. lbs. (42 Nm) A/R
*Check swing bearing bolts after first 50 hours of operation and every 600 hours thereafter.
(See Swing Bearing in Section 3.)