Repair
10
312793L
Repair
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures.
Always use Genuine Graco Parts and Accessories,
available from your Graco distributor. If you supply your
own accessories, be sure they are adequately sized and
pressure rated for your system.
Preparation
Follow all warnings and instructions in your pump man-
ual for the following preliminary steps:
1.
Flush the equipment.
2.
Stop the pump close to the middle of the stroke.
3.
Relieve the pressure.
4.
Disconnect the air and fluid hoses and the ground
wire.
5.
Remove the shield.
NOTE: If the overflow chamber (optional accessory)
contains fluid, unscrew the bottle (103) and discard. See
F
. 4. If it has not been used, the bottle can remain
attached to the cap.
6.
Use a 5 mm hex wrench to loosen the screws (10)
on the top cap.
7.
Hold the coupling nut
with a wrench. Use
another wrench to turn
the motor shaft. To
avoid damage to the
top cap and the
D-shaped seal, do not
turn the coupling nut.
8.
Lower the coupling nut
and remove the cou-
pling collars.
9.
Push up the motor shaft. Remove the coupling nut.
10. Cart Mount: Tilt the cart onto its back to service the
displacement pump.
To avoid the buildup of electrostatic charge, do not
rub the plastic bottle with a dry cloth while it is
attached to the pump. Remove the bottle to clean, if
needed.
F
IG
. 2. Remove coupling collars.
F
IG
. 3. Tilt pump for repair.
ti12815a
hold
turn
ti14531a
10
ti15365a
ti15253a
Summary of Contents for Merkur Bellows
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