Graco MARK V, Repair Manual, Page: 32 / 40

Displacement Pump Replacement
32 3A2333B
Installation
1. Adjust piston rod with pin holder to pull out piston
rod. Tap piston rod on hard surface to push in piston
rod.
2. Slide pump into connecting rod. Push pump pin until
it is fully retained. NOTE: Pin will snap into position.
3. Push pump collar flush with bearing housing ledge
to be able to close pump door.
4. Close pump door and rotate latch into position. Do
not tighten latch.
5. Rotate pump to align with paint hose. Connect hose
and tighten to 8 N•m (70 in-lb).
6. Tighten latch and rotate latch lock into locked posi-
tion.
7. Attach drain hose to sprayer.
8. Fill pump with Graco TSL until fluid flows onto top of
seal.
If pump pin is not inserted properly, it could work loose,
parts could break off and project through the air due to
force of pumping action and cause serious injury or
property damage.
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