Graco Dura-Flo 2400 Instructions-Parts List Manual page 19

Required Tools
D Set of socket wrenches
D Set of adjustable wrenches
D 24 in. adjustable wrench
D Torque wrench
D Rubber mallet
D Arbor press
D Soft wooden block (approx. 1 square ft in size)
D Large vise, with soft jaws
D Thread lubricant
D Anti-seize lubricant 222955
D LoctiteR 2760t or equivalent
NOTE: Service Tool 109508 is available as an acces-
sory. This tool fits over the top of the displacement rod,
making it easier to apply a 24 in. adjustable wrench or
3/4 in. drive socket when connecting or disconnecting
the rod from the piston assembly.
Disconnecting the Displacement Pump
1. Flush the pump, if possible. Stop the pump at the
bottom of its stroke.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 13.
2. Relieve the pressure.
3. Disconnect the air or hydraulic hose. Plug all
hydraulic hoses immediately, to prevent contami-
nation of the hydraulic system. Hold the fluid outlet
fitting (4) with a wrench to keep it from being
loosened while you disconnect the fluid hose.
WARNING
For Model 222943 Premier Pumps, do not lift the
pump by the lift ring when the total weight exceeds
550 lb (250 kg).
4. Disconnect the displacement pump (105) from the
motor (101) as follows. Be sure to note the relative
position of the pump's fluid outlet to the air or
hydraulic inlet of the motor. If the motor does not
require servicing, leave it attached to its mounting.
Service
Be sure to use at least two people when lifting, mov-
ing, or disconnecting the pump. This pump is too
heavy for one person. If you are disconnecting the
displacement pump from a motor which is still
mounted (for example, on a wall bracket), be sure to
support the displacement pump while it is being dis-
connected, to prevent it from falling and causing inju-
ry and property damage. Do this by securely bracing
the pump, or by having at least two people hold it
while another disconnects it.
If the pump is mounted on a cart, slowly tip the cart
backward until the handle rests on the ground, then
disconnect the displacement pump.
5. Using an adjustable wrench, unscrew the coupling
nut (103) from the connecting rod adapter (102).
Remove the coupling collars (108). Take care not
to lose or drop them. See Fig. 6.
6. Hold the tie rod flats with a wrench to keep the
rods from turning. Unscrew the nuts (106) from the
tie rods (107). Carefully remove the displacement
pump (105) from the motor (101).
7. Refer to page 22 for displacement pump service.
To service the air or hydraulic motor, refer to the
separate motor manual, supplied.
CAUTION
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