Maintenance
PST3/PSTF3 750
24
wc_tx000988gb.fm
3.3
Disassembly and Reassembly
Before disassembling the pump, make certain the power supply (circuit
breaker, etc.) is turned off. Then, unplug the cable assembly from the
receptacle or detach it from the terminals. To avoid electrical shock,
DO NOT work with wet hands.
NEVER check the operation of any parts (impeller rotation, etc.) by
turning on the power while the unit is partially assembled. Failure to
observe these precautions may result in a serious accident.
DO NOT disassemble or repair any parts other than those designated
here. If repairs are necessary in any other than the designated parts,
consult your nearest dealer or Wacker Neuson representative.
Improper repairs can result in electrical leakage, electrical shock, fire,
or water leaks.
After reassembly, ALWAYS perform a test operation before resuming
use of the pump. Improper assembly will cause the pump to
malfunction, resulting in electric shock or water leaks.
The procedure for disassembly and reassembly is shown here to the
extent necessary for impeller replacement. A specialized environment
and facilities are necessary for work on the mechanical seal and the
motor parts. Contact your nearest dealer or Wacker Neuson
representative in the event such repairs are necessary.
3.4
Disassembly
See Graphic: wc_gr005669
Note:
For assembly or disassembly, place the pump on its side.
Note:
It is not necessary to drain the oil for disassembly and inspection
of the impeller
(m)
. However, drain oil if further disassembly and
testing is required.
3.4.1
Loosen the three hex nuts
(b)
and remove the three hex bolts
(a)
.
3.4.2
Remove the strainer stand
(c)
and the pump casing
(d)
.
3.4.3
While keeping the impeller from rotating, remove stirrer nut
(j)
, spring
washer
(k)
and plain washer
(l)
.
Impeller vanes may be very sharp due to excessive wear. Handle with
care.
3.4.4
Remove impeller.
Note:
If the parts are worn or damaged, make sure to replace them
with new ones.
WARNING
CAUTION
