MacDon PW8 - Bleeding Cylinders and Lines

215575 303 Revision B
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Figure 5.192: Slave Cylinder — Right Side of Header
5. Position the rod end of cylinder (A) and the safety prop
onto the cylinder support bracket. Secure the rod with
shorter clevis pin (B). Ensure that the clevis pin head faces
outboard.
6. Secure clevis pin (B) with a washer and cotter pin
(not shown).
7. Lift hold-down arm (C) until clevis pin (D) can be installed
through the lift arm and the barrel end of the cylinder.
Ensure that the head of the clevis pin faces outboard.
8. Secure clevis pin (D) with a washer and cotter pin
(not shown).
9. Remove the block of wood inserted in Removing Slave
Cylinder, page 300.
10. Bleed the hydraulic cylinders and lines. For instructions,
refer to 5.9.4 Bleeding Cylinders and Lines, page 303.
5.9.4 Bleeding Cylinders and Lines
Air must be absent from the hydraulic system for it to perform properly. Bleed the hydraulic system after installing a new
attachment, if the pick-up header has been idle for a significant period of time, or if the hydraulic system requires
maintenance.
CAUTION
High-pressure hydraulic oil can cause serious injuries such as burns, cuts, and tissue damage. Always take precautions
when working with hydraulic oil. Wear safety goggles, gloves, and thick clothing. Seek immediate medical attention if
cut or burned.
1. Raise the hold-down fully using the combine reel lift control.
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Figure 5.193: Hold-Down Safety Prop
2. Engage hold-down safety props (A) on both sides of the
header. Ensure that the safety props are fully rotated over
the center so that they remain engaged.
3. Lower the hold-down onto safety props (A) to relieve the
hydraulic pressure in the lines.
MAINTENANCE AND SERVICING