46
GB 14 07 03
Occasional maintenance
Occasional maintenance
Occasional maintenance
Occasional maintenance
Occasional maintenance
The maintenance and renewal intervals for the next
points will depend very much on the conditions under
which the sprayer will operate, and are therefore impos-
sible to specify.
Pump v
Pump v
Pump v
Pump v
Pump valv
alv
alv
alv
alves and dia
es and dia
es and dia
es and dia
es and diaphr
phr
phr
phr
phra
aa
a
agms r
gms r
gms r
gms r
gms rene
ene
ene
ene
enew
w
w
w
wal
al
al
al
al
Diaphragm pump overhaul kit (valves, seals, diaphragms etc.)
Pump model
HARDI
part No.
463 (540 r.p.m.)
750343
463 (1000 r.p.m.)
750343
Valves
Remove valve cover
1
. Before changing the valves
2
note their orientation so they are replaced correctly.
NOTE:
One special valve with white flap
2A
is used. It
has to be placed in the valve opening shown.
It is recommended to use new gaskets
3
when changing
or checking the valves.
Diaphragms
Remove the diaphragm cover
4
. The diaphragm
5
may
then be changed. If fluids have reached the crankcase,
re-grease the pump thoroughly. Check also the drain
hole at the bottom of the pump is not blocked. Reas-
semble with the following torque setting.
Pump model
Diaphragm cover Nm
Dia-
phragm bolt Nm
463 (540 r.p.m.)
90
90
463 (1000 r.p.m.)
90
90
1 Nm = 0.74 lbft
IMPORTANT!
Before tightening the 4 bolts for the
diaphragm cover B the diaphragm must be positioned
between centre and top to ensure correct sealing be-
tween diaphragm pumphousing and diaphragm cover.
Turn crank shaft if necessary.
T261-0001
B
T192-0001
Ball sea
Ball sea
Ball sea
Ball sea
Ball seat c
t c
t c
t c
t chec
hec
hec
hec
heck/r
k/r
k/r
k/r
k/rene
ene
ene
ene
enew
w
w
w
wal, EC on/of
al, EC on/of
al, EC on/of
al, EC on/of
al, EC on/offffff v
v
v
v
valv
alv
alv
alv
alve
ee
e
e
If the main ON/OFF valve does not seal properly (drip-
ping nozzles when main ON/OFF valve is closed), the
ball and seat should be checked.
Remove the
2 bolts fixing
the main
ON/OFF-
pressure
valve unit to
the bracket,
unscrew the
union nut
and pull the
valve away
from the
distribution valves.
Check the ball for sharp edges and scratches, and
check the ball seat for cracks and wear - replace if
necessary.
Cone c
Cone c
Cone c
Cone c
Cone chec
hec
hec
hec
heck/r
k/r
k/r
k/r
k/rene
ene
ene
ene
enew
w
w
w
wal, EC distrib
al, EC distrib
al, EC distrib
al, EC distrib
al, EC distribution v
ution v
ution v
ution v
ution valv
alv
alv
alv
alve
ee
e
e
Periodically check the distribution valves for proper
sealing. Do this by running the sprayer with clean water
and open on/off valve and all distribution valves.
Cautiously remove the clip
A
and pull out the hose
B
for
the pressure equalisation device. When the housing is
T192-0005x
correct
wrong
Summary of Contents for MARRO TWIN FORCE 1000
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