JLG 740AJ Service Manual - Manual (Page 22)

SECTION 1 - SPECIFICATIONS
1-2 – JLG Lift – 3121160
1.3 TIRES
1.4 DRIVE SYSTEM
1.5 SWING SYSTEM
1.6 HYDRAULIC DRIVE PUMP
1.7 VARIABLE DISPLACEMENT PUMP
1.8 HYDRAULIC LOAD SENSE PUMP
Table 1-5. 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 1-6. Tire Specifications
Size Type
Ply
Rating
Load
Range
Pressure
IN 445/55D 19.5 pneumatic 16 H 85 PSI
(6.0 Bar)
IN 445/55D 19.5 foam-filled 16 H N/A
Table 1-7. Drive System
Drive Motor
Displacement
2.74 cu. in. max. 1.000 cu. in. min.
(46 cm 3 max. 16.4 cm 3 min.)
Drive Hub Ratio 9.3:1
Drive Brake Automatic spring applied, hydraulically
released disc brakes
Table 1-8. Swing System Specifications
Swing Motor Displacement
4.9 cu. in. (80 cm 3 )
Swing Brake Automatic spring applied hydraulically
released disc brakes
Swing Hub Ratio 50:1
Table 1-9. Hydraulic Drive Pump Specifications
Pump Output 35.5 GPM (134 lpm) @ 2800 RPM
Pump Displacement
2.8 cu. in. (46 cm 3 )
Charge Pump Displacement
0.85 cu. in. (14 cm 3 )
Charge Pump Output 9.5 GPM (37 lpm) @ 2800 RPM
Charge Pump Pressure 400 PSI. (27.5 Bar)@ 2800 RPM
Clockwise Rotation
Table 1-10. Variable Displacement Pump Specifications
Type Variable, swashplate design
Nominal Pressure 3600 psi (248 bar)
Peak Pressure 4600 psi (317 bar)
Pump Circuit Open
Displacement Vgmax
2.75 in 3 (45 cm 3 )
Pressure and Flow Control DFR1
Rotation Clockwise
NBR seals Nitrile rubber to DIN ISO 1629
Shaft SAE 1.00 in. (2.54 cm) splined
Table 1-11. Hydraulic Load Sense Pump Specifications
Pump Displacement
2.1cu. in. (34.4 cm 3 ) Max.
Pump Output 15.5 GPM (59 lpm) @ 1800 RPM
Stand By Pressure 400 PSI.(27.5 Bar) @ 1800 RPM
High Pressure Relief High Pressure Relief - 2700 PSI.(186
Bar)
Rotation Clockwise