JLG 660SJ Service Manual - Manual (Page 18)

SECTION 1 - SPECIFICATIONS
1-2 – JLG Lift – 3121202
Drive System
Tires
Swing System
Auxiliary Power Pump
Hydraulic Filters
Table 1-6. GM 3.0L
Fuel Gasoline or Gasoline/LP Gas
No. of Cylinders 4
BHP
Gasoline
LP
83 hp @ 3000 rpm
75 hp @ 3000 rpm
Bore 4.0 in. (101.6 mm)
Stroke 3.6 in. (91.44 mm)
Displacement 181 cu.in. (3.0 L, 2966 cc)
Oil Capacity w/filter 4.5 qts. (4.25 L)
Minimum Oil Pressure
at idle
Hot
6 psi (0.4 Bar) @ 1000 rpm
18 psi (1.2 Bar) @ 2000 rpm
Compression Ratio 9.2:1
Firing Order 1-3-4-2
Max. RPM 2800
Table 1-7. Drive System Specifications
Drive Motor
Displacement 2.8 cu. in. max. 1.1 cu. in. min.
(46 cm3] max. 18 cm3] min.)
Drive Hub Ratio
2WD
4WD
53.58:1
43:1
Drive Brake Automatic spring applied, hydraulically
released disc brakes
Toe-in adjust for 1/4" (6.35 mm) overall
Table 1-8. Tire Specifications
Size Load Range Ply Rating Pressure
15 x 19.5 G 14 95 PSI (6.5 Bar)
15 x 19.5 G 14 Foam-Filled
18 x 625 H 16 60 PSI (4 Bar)
41/18LL x 22.5 G 14 70 PSI (5 Bar)
Table 1-9. Swing System Specifications
Swing Motor Displacement
4.62 cu. in. (75 cm 3 )
Swing Brake Automatic spring applied hydraulically
released disc brakes
Swing Hub Ratio 50:1
Hydraulic Gear Pump
(at 1800 RPM) 7.9 GPM (29.90 lpm)
Pump Displacement
1.02 cu. in. (16 cm
3
)
Rotation Clockwise
Table 1-10. Auxiliary Power Pump Specifications
Output 2.6 GPM (9.84 lpm) @ 1200 PSI. (82.7 BAR)
Pump Displacement
0.244 cu. in. (14 cm 3 )
Motor DC
Rotation Clockwise
Table 1-11. Hydraulic Filters
Pressure Filter In-line
Return - Bypass Type 10 Microns Absolute
Charge 10 Microns Absolute
Hydraulic Strainers (In Tank) 30 Microns