KM 251 en Maintenance
V1.0 43
9.6.4 Fitting the dosing head
• Fit the dosing head and tighten the dosing head screws (1q with 2q) crosswise using a
torque wrench.
Note
Refer to the “Start-up” section for subsequent start-up!
9.6.5 Filling gear oil
Caution
Risk of leaking and damage caused by oil loss! For each oil change, a new flat gas-
ket (1b) must be used!
Check that the lock screw (B) is tightened.
1. Unscrew and remove the aeration screw and oil-level gauge (F).
2. Set the stroke adjustment button (L) to “0”.
3. Slowly add the hydraulic oil through the aeration screw opening (F), until the oil rea-
ches the mark on the oil-level gauge.
4. Wait 30 minutes.
5. Run the pump for approx. 5 minutes with a stroke adjustment of 0%.
6. Run the pump for approx. 10 minutes with a stroke adjustment of 40%.
9.6.6 Checking the oil level.
1. Switch off pump, check the oil level and add oil if necessary.
2. Fit the aeration screw and oil-level gauge (F) back on.
Caution
Following initial start-up and after each time the diaphragm is changed, tighten the
fixing screws on the dosing head:
After approximately 6 - 10 working hours or two days, tighten the dosing head
screws crosswise using a torque wrench.
Torque:
1q Dosing head screw
2q Intermediate disk
2 Dosing head
Q Diaphragm
1q
Q
2
2q
8 - 10 Nm for KM 251 / 10 bar
10 - 12 Nm for KM 251 / 16 bar
13 - 15 Nm for KM 251 / 25 bar
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