44
Pellerin Milnor Corporation
CAUTION:
Risk of malfunction — Air in hydraulic fluid will compress. Compressed
air in the brake line will cause brake malfunctions.
� Remove (bleed) air from the brake circuit before you operate the
machine.
Requirements—These personnel and items are necessary for this procedure:
• Two technicians
• An 8-ounce container of new brake fluid
• Alternative procedures to remove air and used brake fluid:
– a suction pump (faster procedure) (see Figure 20: Pumps Used to Remove Hydraulic Fluid
Quickly, page 44 )
– with pressure in the hydraulic cylinder and gravity (see Figure 21: Typical Tools to Re-
move Air (Bleed) Brakes and Used Hydraulic Fluid, page 45 )
TIP: The Vacula suction pump can do the work more quickly than by gravity and pres-
sure in the hydraulic cylinder. It is also cleaner because all of the hydraulic fluid goes into
the container supplied. It helps you not spill the hydraulic fluid.
• If you use a suction pump as shown in Figure 20 , follow the manufacturer's instructions.
• If you use the tools as shown in Figure 21 , follow the instructions in Section : How to Change
Hydraulic Fluid and Remove (Bleed) Air from the Brake Circuit , page 43.
Figure 20. Pumps Used to Remove Hydraulic Fluid Quickly
Alternative Pumps for Suction of Hydraulic Fluid
Legend
1. A manual suction pump
2. The Vacula suction pump uses compressed air and holds used hydraulic fluid.
Drive Assemblies
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