JLG 642 Operation & Safety Manual page 185

Axles
Differential Housing Capacity
642 ..........................................................................................................................................7.2 qt (6,8 L)
943, 1043............................................................................................................................. 15 qt (14,2 L)
1055, 1255
Front.............................................................................................................................. 15 qt (14,2 L)
Rear ............................................................................................................................... 14 qt (13,3 L)
Friction Modifier—May be added to axle differentials
(Must be premixed with axle fluid) ................................................... Not to Exceed 24 oz (709 mL)
Wheel End Capacity
642 ..........................................................................................................................................2.1 qt (2,0 L)
943, 1043...............................................................................................................................1.8 qt (1,7 L)
1055, 1255
Front................................................................................................................................1.8 qt (1,7 L)
Rear .................................................................................................................................1.5 qt (1,4 L)
Air Conditioning System (if equipped)
System Capacity.......................................................................................................................2.6 lb (1,2 kg)
Brake Fluid
Capacity ........................................................................................................................................1.1 qt (1,0 L)
31211031
Section 9—Specifications
9-5