ProMinent Makro TZ Operating Instructions Manual page 37

Assembling liquid end
ProMinent ®
Remove the guide sleeves (5) and the guide bands (6), the packing collars (8) and the flushing
collar (7)
Clean the sealing area thoroughly
Clean the piston (1), the guide sleeves (5) and the flushing collar (7)
Dispose of the packing rings and the guide bands
Insert the piston (1)
Reassemble the parts in reverse order:
Replace packing collars
NOTICE
Never push in packing collars with pointed instrument.
This will deform packing collars or damage the piston.
Push in the guide sleeve (5) evenly with a new guide band and packing collar
1
Fig. 27
Push in further packing collars with cut ends each offset by 180
Push flushing collar (7), one more packing ring and the guide sleeve (5) with a new guide band
one after the other into the sealing cavity
Place the liquid end flange (4) onto the liquid end and screw tight (tightening torque 24 Nm)
NOTICE
• Tighten tensioning screw finger tight!
The packing collars and the piston might otherwise become damaged.
• After assembling the liquid end, proceed according to section "Installing stuffing box
packing"!
Replace tensioning screw and tighten finger tight only.
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!
8 7 6 5 4 3
2
Repair
1 Piston
2 Hose nozzle
3 Tensioning screw
4 Liquid end flange
5 Guide sleeves
6 Guide bands
7 Flushing collar
8 Packing collars
Page 37