Graco 820-116 Instructions-Parts List Manual page 16

Disassembly
NOTE: Parts included in the Packing Repair Kit,
820–672, are marked with an asterisk (*) in the text
and drawings. Use all the new parts in the kit.
1. Loosen the packing nut (216) and remove plug
(205). Unscrew the cylinder from the intake valve.
See Fig. 16.
2. Disassemble the intake valve. Use a pick to
remove the old gasket (202). Clean and inspect
the parts. See Fig. 17.
3. Reassemble the intake valve using a new gasket
(202*), ball (204*) and pin (221*). See Fig. 17.
4. Tap the piston rod (224) out of the cylinder. See
Fig. 18.
5. Screw the sleeve removal tool's large nut (A) into
the top of the cylinder. Screw down the rod to push
the sleeve out. See Fig. 19. Remove the tool.
Clean and inspect the parts.
6. Clamp the piston rod (224) in a vise. Loosen the
retaining nut (211). Unscrew the piston valve
(222). See Fig. 20.
7. Disassemble the piston and discard the packings
and glands. See Fig. 21.
8. Remove and discard the throat packings and
glands from pump cylinder. See Fig. 22.
Fig. 16
*204
*202
Fig. 17
Displacement Pump
205
216
02558A
221*
02559
Fig. 18
Fig. 19
222
211
224
Fig. 20
Fig. 21
Fig. 22
224
02561
A
02562
02563
02564
02565