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16 684025
Service
Required Tools
• Set of large adjustable wrenches
• Set of metric sockets or wrenches
• Large pipe wrench
• Torque wrench
• Rubber mallet
• Flat end punch
4. With the bleeder type main air valve turned off (1),
remove the thumb screws (14) and the two
g
uards
(15) from the sides of the proportioner.
5. Disconnect the displacement pump (3) from the frame
(5) as follows:
6. Note the relative position of the pump’s fluid outlet (23)
to the frame and also note the frame location of
displacement pump bein
g
removed. Each
displacement pump must be returned to its ori
g
inal
position and orientation.
WARNING CAUTION
To reduce the risk of serious injury or amputation,
carefully follow all instructions listed below. In addition,
be sure that the pressure relief procedure has been
completed and that the main bleeder-type air valve has
been turned off and locked out before removin
g
ANY
guards or covers from the proportioner.
Be sure to use two people when liftin
g
, movin
g
, or
disconnecting the pump. This pump is too heavy for one
person. Be sure to support the displacement pump while
it is bein
g
disconnected, to prevent it from fallin
g
and
causin
g
injury or property dama
g
e. Do this by securely
bracing the pump, or by having at least two people hold it
while another disconnects it.
Disconnecting the Displacement Pump(s)
1. Flush the System. Follow the procedure on page
11.
2.
Relieve the pressure.
7. Usin
g
an adjustable wrench (or hammer and punch),
unscrew the couplin
g
nut (10,11) from the rod adapter
(13). Do not lose or drop the couplin
g
collars (12). See
Fig. 6.
8. Hold the tie rod flats with a wrench to keep the rods
WARNING
from turnin
g
. Unscrew the nuts (8) from the tie rods
(7). Carefully remove the displacement pump (3)
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pressure
Relief Procedure on page 11.
from the frame.
9. Refer to the separate manual supplied for
3. Disconnect the siphon hose and the fluid outlet hose.
displacement pump service. Some models use two
different displacement pumps. Be sure to look at the
model number and use the appropriate manual for
service and reference.