14
Performance Series 750e
GB
Servicing
Repairs at the unit
10. Servicing
10.1 General servicing
Servicing of the unit should be carried out once annually by the
Titan service.
1. Check high-pressure hoses, device connecting line and
plug for damage.
2. Check the inlet valve, outlet valve and filter for wear.
10.2 High-pressure hose
Inspect the high-pressure hose visually for any notches or
bulges, in particular at the transition in the fittings. It must be
possible to turn the union nuts freely.
11. Repairs at the unit
Switch the unit OFF.
Before all repair work: unplug the power plug
from the outlet.
11.1 Relief valve
1. Use a drift punch of 2 mm to remove the grooved pin (Fig.
9, Item 1) from the relief valve handle (2).
2. Remove the relief valve handle (2) and cam base (3).
3. Using a wrench, remove the valve housing (4) from the
pump manifold (6).
4. Ensure that the seal (5) is seated correctly, then screw the
new valve housing (4) completely into the pump manifold
(6). Tighten securely with a wrench.
5. Align the cam base (3) with the hole in the pump manifold
(6). Lubricate the cam base with grease and slide on the
cam base.
6. Bring the hole in the valve shaft (7) and in the relief valve
handle (2) into alignment.
7. Insert the grooved pin (1) to secure the relief valve handle
in position.
1
7
6
5
4
2
3
11.2 Inlet and outlet valve
1. Remove the four screws in the front cover and then
remove the front cover.
2. Switch the unit ON and then OFF so that the piston rod is
positioned in the lower stroke position.
Danger of crushing - do not reach with the
fingers or tool between the moving parts.
3. Unplug the power plug from the outlet.
4. Screw off the suction tube.
5. Screw off the return hose.
6. Swivel the unit 90° to the rear in order to work more easily
on the material feed pump.
7. Unscrew the inlet valve housing (Fig. 10, Item 1) from the
pump manifold.
8. Remove the lower seal (2), lower ball guide (3), inlet valve
ball (4), inlet valve seat (5) and O-ring (6).
9. Clean all the parts with the corresponding cleaning agent.
Check the inlet valve housing (1), inlet valve seat (5)
and inlet valve ball (4) for wear and replace the parts if
necessary. If the worn inlet valve seat (5) is unused on
one side, install it the other way round.
2
3
4
5
6
1
10. Unscrew the outlet valve housing (Fig. 11, Item 7) from the
piston (8) with 3/8 inch hexagon socket head wrench.
11. Remove the upper seal (9), upper ball guide (10), washer
(11), outlet valve ball (12), and outlet valve seating (13).
12. Clean all the parts with the corresponding cleaning agent.
Check outlet valve housing (7), outlet valve seat (13),
outlet valve ball (12) and upper ball guide (10) for wear
and replace parts if necessary. If the worn outlet valve
seat (13) is unused on one side, install it the other way
round.
13. Carry out installation in the reverse order. Lubricate O-ring
(Fig. 10, Item 6) with machine grease and ensure proper
seating in the inlet valve housing (Fig. 10, Item 1).
