Repair
Repair
Repair
Required
Required
Required Tools
Tools
Tools
• Set of large adjustable wrenches
• Set of metric sockets or wrenches
• Large pipe wrench
• Torque wrench
• Rubber mallet
• Flat end punch
Disconnect
Disconnect
Disconnect the
the
the Displacement
Displacement
Displacement Pump
Pump
Pump
1.
Follow
2.
Follow
Pressure Relief Procedure, page 12
3.
Disconnect the siphon hose and the fluid outlet
hose.
4.
With the bleeder type main air valve (A) turned
off, remove the thumb screws (P) and the two
guards (R) from the sides of the proportioner.
5.
Disconnect the displacement pump (C, D) from
the frame (E) as follows:
Note
Note the relative position of the pump’s
fluid outlet (Z) to the frame and also note
the frame location of displacement pump
being removed. Each displacement
pump must be returned to its original
position and orientation.
NOTICE
NOTICE
NOTICE
To prevent damage to the displacement
pump, use two people when lifting, moving,
or disconnecting the pump. This pump is too
heavy for one person. Securely brace the
pump or have a least two people hold it while
another disconnects it.
6.
Using an adjustable wrench (or hammer and
punch), unscrew the coupling nut (K, L) from the
rod adapter (N). Do not lose or drop the coupling
collars (M). See Fig. 3.
7.
Hold the tie rod flats with a wrench to keep the
rods from turning. Unscrew the nuts (H) from the
tie rods (G). Carefully remove the displacement
pump (C,D) from the frame.
8.
Refer to the separate manual supplied for
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.
3A3092A
19
