Graco 312068M Marine Sanitation System User Manual


 
Repair
10 312068M
17. Remove the right port block and rod bushing
assembly.
18. Remove the rod bushings (103) from the port
blocks (116).
19. Using the o-ring pick, remove all rings and seals.
If the right clevis breaks loose from the hydraulic
piston shaft:
6. Remove the right clevis.
7. Remove the activator plate (119) and modified
bushing (118).
8. Remove the right retainer plate (101).
9. Remove the tie rods (115).
10. Remove the right rod bushing and port block
assembly.
11. Slide the piston and everything attached to it out the
left side of the cylinder by holding the assembly by
the cylinder and pushing the right end of the piston
shaft against a flat surface.
12. Using a c-clamp, secure the port block (116) of the
remaining assembly.
13. Break the baffle jam nut (122) loose from the
hydraulic piston shaft.
14. Keeping the piston shaft from rotating using a 1/2 in.
wrench on the piston shaft flats and using a 1 in.
impact wrench on the left clevis, break loose and
remove the left clevis.
15. Remove the left retainer plate (101).
16. Remove the left port block and rod bushing assem-
bly.
17. Remove the rod bushings (103) from the port
block (116).
18. Using the o-ring pick, remove all rings and seals.
Reassembly
Tools Required
Torque wrench set to 15 ft-lb (20 N•m) with
1 in. open-end attachment and
1/2 in. socket attachment
1 in. open-end wrench
1/2 in. open-end wrench
Assemble Rod Bushing to Port Block
1. Insert black o-ring (109) into the outside groove of
rod bushing (103).
2. With the wide end of the rod bushing facing down,
insert white back-up ring (110) above o-ring (109) in
the same groove.
3. With the lip facing out, push one rod wiper (111) into
the small end and one shaft seal (112) into the big
end of the rod bushing.
4. Place port block (116) on a flat surface with the
large opening facing up.
5. Using your hands, push the wide end of the rod
bushing into port block (116).
6. On the side opposite the rod bushing, place
o-ring (105) around the extruding circle.
111
112
110
109
103
TI11275a
105
116
1
Apply lithium
1
TI11276a