Case 580SR Service Manual page 587

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CYLINDER WITH ONE BRAKE PEDAL DEPRESSED
1
10
Pressurized brake oil
Tank oil (no pressure)
1. Oil to cylinder (right hand side)
2. Pressure switch
3. Secondary spool
4. Tank inlet
5. Primary spool
When using one brake to assist turning, the brake
cylinder being applied operates only one brake. This
is achieved by the pressure port being blocked by
the two seals on the cylinder not being operated.
SECTION 33 - BRAKES SYSTEM
2 3 4
9 8
5
6
7
6. Cylinder body
7. Cylinder body
8. Primary spool stop
9. Balancing pipe
10. Oil to cylinder (left hand side)
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11
F29373