Engine - continental tmd27, Engine - caterpillar 3044c, Drive system (s models) – JLG 660SJ ANSI Service Manual User Manual
Page 20: Drive system (a models), Steer system (s models), Steer system (a models), Swing system

SECTION 1 - SPECIFICATIONS
1-2
– JLG Lift –
3120718
Engine - Continental TMD27
Fuel - Diesel.
Oil Capacity.
7.00 Quarts (6.65 l) w/Filter.
6.00 Quarts (5.7 l) w/o Filter.
Low RPM - 1800.
High RPM - 2800.
Alternator - 63 Amps, Belt Drive.
Battery - 85 Amphour, 550 Cold Cranking Amps, 12 VDC.
Fuel Consumption.
Low RPM - 1.80 GPH (6.81 lph).
High RPM - 2.30 GPH (8.71 lph).
Horsepower - 66.5 @ 3000 RPM.
Coolant - 3.8 Gallons (3.6 l).
Engine - Caterpillar 3044C
Type - Four Stroke Cycle
Cylinders - 4 in-line
Bore - 3.70 inch (94 mm)
Stroke - 4.72 inch (120 mm)
Aspiration - turbocharged
Compression ratio - 19:1
Displacement - 203 in
3
(3.33 L)
Firing Order - 1-3-4-2
Rotation (viewed from flywheel) - Counterclockwise
Oil Capacity (w/filter) - 10.6 quarts (10 L)
Cooling System (Engine Only) - 5.8 quarts (5.5 L)
Drive System (S Models)
Tires - 15 x 19.5, G 14 ply rating, directional tread,
pneumatic, tire pressure -95 PSI (6.5 Bar).
Drive Motor Displacement.
Standard - 2.8 cu. in. max. 1.1 cu. in. min.
(46 cm3] max. 18 cm3] min.).
Drive Hub Ratio.
Standard - 53.58:1 (2WD).
Standard - 43:1 (4WD).
Drive Brake - Automatic spring applied, hydraulically
released disc brakes.
Drive System (A Models)
Tires - 14 x 17.5 NHS, G 14 ply rating, directional tread,
pneumatic, tire pressure - 90 PSI (6 Bar).
Tires - 14 x 17.5, Super Heavy Duty (Airboss),
non directional tread. (n Models)
Drive Motor Displacement.
Standard - 2.8 cu. in. max. 1.1 cu. in. min.
(46 cm3] max. 18 cm3] min.).
Drive Hub Ratio.
Standard - 39.96:1.
Drive Brake - Automatic spring applied, hydraulically
released disc brakes.
Tire Pressure - 14 x 17.5 NHS, 90 PSI (6 Bar).
Steer System (S Models)
Tires - 15 x 19.5, G 14 ply rating, directional tread, pneu-
matic, tire pressure -95 PSI (6.5 Bar).
Tires - 15 x 19.5, G 14 ply rating, directional tread, foam
filled.
Toe-in, adjust for 1/4" (6.35 mm) overall.
Steer System (A Models)
Tires - 14 x 17.5 NHS, G 14 ply rating, directional tread,
pneumatic.
Tires - 14 x 17.5 NHS, G 14 ply rating, directional tread,
foam filled.
Tires - 14 x 17.5, Super Heavy Duty (Airboss).
NOTE: Tie rods are non-adjustable on A Models.
Swing System
Swing Motor Displacement - 4.62 cu. in. (75 cm3]).
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 cm3]).
Clockwise Rotation.
Auxiliary Power Pump.
2.6 GPM (9.84 lpm) @ 1200 PSI. (82.7 BAR.
Pump Displacement - 0.244 cu. in. (14 cm3]).