Operating instructions

ProMinent

Page 36

Repair

왘 If the diaphragm rupture sensor opens at every stroke, unscrew it until it remains just open

and then screw on nut

왘 Screw the housing back on (is the O-ring seated correctly beneath?)

왘 Tighten the union nut on the PG threaded connector (must be sealed.)

11.3 Piston liquid end (TZKa)

Disassembling liquid end 왘 Remove the protective cover (4) from the turret (see Fig. 25)

왘 Remove circlip (2) from the bolt on the coupling head and remove bolt (1)

왘 Place a sling around the liquid end and attach to a crane.

WARNING

•A helper should steady the liquid end by hand.

It could slip out of the sling if allowed to swing freely.

• Ensure that the pistons cannot fall out!

왘 (Where applicable: remove leakage or flushing hoses from the hose nozzles (5))

왘 Remove locking screws (3)

왘 Remove the liquid end and place on a firm, level base.

Fig. 25 Diaphragm rupture sensor (*)

Fig. 26

1 Bolt

2 Safety collar

3 Locking screw

4Protective cover

5 Hose nozzles for

leakage/flushing

connector

Servicing liquid end 왘 Unfasten the tensioning screw (3) with the face spanner and remove (see Fig. 26)

왘 Unfasten screws on liquid end flange (4) and remove liquid end flange

왘 Remove piston (1)

IMPORTANT

Make a note of the order in which you remove the parts.

BA_MA_TZ_006_10_06_GB.p65 05.02.2007, 13:41 Uhr36