Coupler - Assemble (A.12.A.05 - F.10.A.20); 435, 445, 445Ct - Case 435 Repair Manual

DISTRIBUTION SYSTEMS - SECONDARY HYDRAULIC POWER SYSTEM

Coupler - Assemble (A.12.A.05 - F.10.A.20)

435, 445, 445CT

1. Install a new backup washer and a new seal on the
new inner sleeve. Lubricate the seal and the backup
washer with clean hydraulic oil.
2. Apply Loctite 271 to the threads on the new valve.
Install the new valve, the new inner sleeve, and the
spring in the fitting.
3. Install the cap screw to fasten the valve to the fitting.
Tighten the cap screw to a torque of 7.9 - 9.0 Nm
(70 - 80 lb in).
4. Install the coupler repair tool into the coupler body.
Fasten the assembly in a vise so that the coupler
repair tool is held by the vise jaws.
5. Make sure that the outer sleeve and spring are
installed in the coupler body.
6. Apply Loctite 271 to the external threads of the
fitting. Install the fitting in the coupler body. Tighten
the fitting to a torque of 61 - 68 Nm (45 - 50 lb ft).
7. Remove the coupler repair tool from the coupler
body.
8. Use the matching male coupler to test for correct
function.
9. Use clean hydraulic oil to leak test the coupler
assembly to a pressure of 138 bar (2000 psi).
IMPORTANT: Do not get solvent on the new seal. Make
sure that the coupler body is completely dry before
installing the new seal.
10. Fold the new seal into a heart shape and work
the seal into the groove. Do not use sharp tools.
After the seal is installed, use clean hydraulic oil to
lubricate the seal.
11. Use a screwdriver to push the poppet in all the way.
Remove the piece of soft wire. Release the poppet.
12. Use clean hydraulic oil to leak test the male coupler
to a pressure of 132 bar (2000 psi).
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