Contents
Dimensions
| A. JLG 660SJ Platform Width | 36 in (910 mm) |
| B. Platform Length | 96 in (2440 mm) |
| C. Machine Width | 98 in (2480 mm) |
| D. Tailswing | 48 in (1220 mm) |
| E. Machine Height | 101.4 in (2580 mm) |
| F. Machine Length | 396.4 in (10010 mm) |
| G. Wheelbase | 98.7 in (2500 mm) |
| H. Ground Clearance | 11.3 in (290 mm) |
| 2WS Turning Radius, Inside | 115 in (2920 mm) |
| 2WS Turning Radius, Outside | 235 in (5960 mm) |
| 4WS Turning Radius, Inside | 63.4 in (1610 mm) |
| 4WS Turning Radius, Outside | 152.4 in (3870 mm) |
Tires
| Tire Size | Type |
|---|---|
| 39 x 15-225 (Standard) | Lug Tread |
| 39 x 15-225 | Foam Filled |
| 15 x 19.5, G 14PR | Directional Tread, Pneumatic |
| 15 x 19.5, G 14PR | Directional Tread, Foam Filled |
| Max Ground Pressure | 86 psi (593 kPa) |
Platform
| Max Platform Height | 65 ft 8 in (20020 mm) |
| Max Horizontal Outreach | 57 ft 1 in (17400 mm) |
| Swing | 360° Continuous |
| Platform Rotator (Hydraulic) | 180° |
| Platform Capacity (Restricted) | 750 lb (340 kg) |
| Platform Capacity (Unrestricted) | 550 lb (249 kg) |
| Jib Length | 6 ft (1830 mm) |
| Jib Range of Articulation | 132° (+71° / -61°) |
Engine Details
| Engine Model | Deutz D 2.9 L4 | Ford MSG425 |
|---|---|---|
| Number of Cylinders | 4 | 4 |
| Fuel Type | Diesel | Gasoline / LP |
| Displacement | 177 cu in (2.9 L) | 152 cu in (2.5 L) |
| Bore | 3.6 in (92 mm) | 3.5 in (88 mm) |
| Stroke | 4.3 in (110 mm) | 3.9 in (100 mm) |
| Gross Horsepower | 49 hp (36.4 kw) | 84 hp (61.8 kw) gas 76 hp (55.9 kw) LP |
| Power Measured @ | 2600 rpm | 3200 rpm |
| Aspiration | Naturally aspirated | Naturally aspirated |
| Emission Standards | US EPA Tier 4 Final | US EPA Tier 4 Final |
Operational Specs
| Max Operating Weight | 26650 lb (12088 kg) |
| Gross Machine Weight, 2WD | 25341 lb (11494 kg) |
| Gross Machine Weight, 4WD | 25910 lb (11753 kg) |
| Platform Capacity | 500 lb (227 kg) |
| Operating Voltage | 12 V |
| Alternator (Deutz) | 60 amps |
| Alternator (Ford) | 40 amps |
| Battery (Deutz) | 12 V, CCA 1000, RC:210 min |
| Battery (Ford) | 12 V, 85 Ah, CCA 550 |
| Packages | SkyPower Package |
| Accessory Packages | SkyWelder / SkyGlazier / Nite Bright / SkyCutter / Pipe Rack / SkyAir |
Chassis
| TransmissionType | Hydrostatic transmission |
| Drive | 2WD / 4WD |
| Steering | 2WS / 4WS |
| Max Travel Speed | 3.8 mph (6.1 km/h) |
| Gradeability, 2WD | 30% |
| Gradeability, 4WD | 45% |
| Axle Oscillation | 8 in (200 mm) |
| Service Brakes | Automatic spring applied, hydraulically released disc brakes |
Hydraulic System
| Type | Load Sensing System |
| Pump Type | Variable displacement pump |
| Pump Flow Capacity | 7.9 gal/min (29.9 L/min) |
| AUX Pump Flow Capacity | 2.6 gal/min (9.8 L/min) |
| Max System Relief | 3000 psi (20684 kPa) |
| Pressure, Upper Boom Lift Down | 1500 psi (10300 kPa) |
| Pressure, Swing | 1700 psi (11700 kPa) |
| Pressure, Steer | 1800 psi (12400 kPa) |
| Pressure, Steer Reliefs – 4WS Front & Rear | 2500 psi (17200 kPa) |
| Pressure, Platform Level Forward | 2800 psi (19300 kPa) |
| Pressure, Backward | 1800 psi (12400 kPa) |
| Pressure, Articulating Jib Boom Up | 1500 psi (10300 kPa) |
| Pressure, Down | 1200 psi (8300 kPa) |
Hydraulic Oil
| Hydraulic System Operating Temperature Range | SAE Viscosity Grade |
|---|---|
| +0° to + 180° F (-18° to +83° C) | 10W |
| +0° to + 210° F (-18° to +99° C) | 10W-20, 10W-30 |
| +50° to + 210° F (+10° to +99° C) | 20W-20 |
Service Refill Capacities
| JLG 660SJ Engine | Deutz (Diesel) | Ford (Dual Fuel) |
|---|---|---|
| Fuel Tank Capacity | 40 gal (151 L) | 31 gal (117 L) |
| Propane Tank Capacity | – | 43.5 lb (19.7 kg) |
| Engine Oil Capacity (w/ filter) | 2.8 gal (10.5 L) | 1.7 gal (6.6 L) |
| Cooling System Capacity | 3.3 gal (12.5 L) | 2.0 gal (7.5 L) |
| Hydraulic System Capacity (w/ tank) | 40 gal (151.4 L) | 40 gal (151.4 L) |
| Hydraulic Tank Capacity | 32 gal (121 L) | 32 gal (121 L) |
| Drive Hub Capacity (each) | 0.13 gal (0.5 L) | 0.13 gal (0.5 L) |
