Preventive maintenance
74 810770 Operator Manual Echion
Assemble the check valve and the low-pressure poppet
1. Use a cotton-tipped applicator to put high-pressure antiseize lubricant in the recess in the
bottom of the check valve.
2. Use a cotton-tipped applicator to guide the high-pressure poppet seat into the check valve. The
wide end of the poppet seat faces toward the check valve.
3. Push the high-pressure poppet seat into the high-pressure antiseize lubricant in the check valve.
4. Put high-pressure antiseize lubricant on the threads of the output adapter.
5. Put the high-pressure poppet spring and the high-pressure poppet in the output adapter.
6. Put the output adapter in the check valve and tighten it by hand. Use a torque wrench to tighten
the output adapter to 115 N ∙ m (85 lbf ∙ ft).
7. Torque the high-pressure water fitting to 68 N ∙ m (50 lbf ∙ ft).
8. Repeat this procedure on the other end of the intensifier.
9. Connect the high-pressure tubing.
10. Connect the low-pressure water lines.
CAUTION
Tightening the output adapter with the high-pressure poppet in an incorrect position
can cause damage.
When the output adapter is correctly installed, the gap between the wide part of the
output adapter and the check valve is2.5mm(3/32inch) and no threads are visible.
If the gap is too large or if threads are visible, make sure that the poppet parts have
not moved.
CAUTION
Make sure that some of the threads on the high-pressure tubing are visible at the
fitting. Refer to High-pressure water fittings on page 144.
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