Cleaning, maintenance and repair
Replacing the piston diaphragm
•
Ensure the correct position for the recesses and/or holes on the
hydraulic cylinders.
•
Secure the piston diaphragm (Fig. 185/8) with a washer disc and
a screw (Fig. 185/11) on the piston (Fig. 185/9), so that the rim
shows on the cylinder head side (Fig. 185/7).
•
Always tighten the nuts (Fig. 185/1,2) in a crosswise fashion
using the specified torque. Improper tightening of the nuts caus-
es warping, which results in leaks.
1. Undo the screw (Fig. 185/11) and remove the piston diaphragm
(Fig. 185/8) and the washer disc from the piston (Fig. 185/9).
2. If the piston diaphragm has been punctured, drain the oil/spray
liquid mixture from the pump housing.
3. Remove the hydraulic cylinder (Fig. 185/10) from the pump
housing.
4. Clean the pump housing by flushing it thoroughly with diesel oil
or paraffin.
5. Clean all sealing faces.
6. Insert the cylinder (Fig. 185/10) back into the pump housing.
7. Fit the piston diaphragm (Fig. 185/8).
8. Mount the cylinder head (Fig. 185/7) on the pump housing and
tighten the screws (Fig. 185/6) an equal amount in a crosswise
fashion.
Use adhesive for medium tight screw connections for the screw
connection!
9. After testing and cleaning, fit the valve groups (Fig. 185/5).
10. Insert new O-rings.
11. Mount the suction (Fig. 185/3) and pressure port (Fig. 185/4) on
the pump housing.
12. Tighten the nuts (Fig. 185/1,2) in a crosswise fashion using a
torque of
25 Nm (BP 160-185) / 20 Nm (AR 250-280)
.
12.14
Calibrate the flow meter
For information on this, observe Operating manual for software ISO-
BUS; section "Impulses per litre".
220
UX Super
BAG0054.10 11.16