Repairs at the unit
9
7
6
5
8. Lubricate upper packing (1) and lower packing (4) with
machine grease.
9. Insert upper packing (Fig. 15) with O-ring (1) and protruding
lip (2) downward.
1
2
10. Insert upper support ring (6) on top of the upper packing (1)
11. Thread the upper seal retainer (7) into the cylinder (2).
12. Rotate the cylinder in the vise so that the bottom end is facing
up.
13. Insert the lower packing partially into the bottom of the
cylinder with the large beveled edge facing down. The large
beveled edge (Fig. 16. Item 1) will face up when the cylinder is
upright.
1
14. Push the lower packing assembly (Fig. 14, Item 4) into position
using the lower packing insertion tool (see Fluid Section
Assembly parts list for lower packing insertion tool P/N).
GB
1
2
4
3
8
16
i
Coat the piston insertion tool (i.e. upper packing
pre-form tool) and the piston rod with grease before
inserting them into the cylinder.
15. Place the piston insertion tool over the top of the piston rod
(8).
16. Insert the piston rod (8) into the bottom of the cylinder (2),
through the lower packing assembly (4), through the upper
packing assembly (1), and out through the upper seal retainer
(7).
i
Make sure the raised lip on the bottom of the lower
packing is fully outside the packing around the
piston rod after insertion of the piston rod.
17. Remove the piston insertion tool from the top of the piston
rod (8).
18. Turn the jam nut (9) counterclockwise until it is flush against
the top of the cylinder (2).
19. Lubricate the threads on the cylinder with anti-seize
compound. Remove the cylinder from the vise.
20. Thread the cylinder into the gear box housing, turning
clockwise. When the connecting pin hole on the piston rod
(Fig. 11, item 5) lines up with the hole in the slider assembly
(Fig. 11, item 4), insert the connecting pin (Fig. 11, item 3).
21. Slide the retaining ring (Fig. 11, item 2) down over the
connecting pin.
22. Continue to turn the cylinder clockwise until the jam nut (Fig.
14, 9) is flush against the gear box housing.
i
If the nipple on the cylinder does not face the back
of the unit, turn the cylinder counterclockwise until
the nipple faces the back of the unit. Do not turn the
cylinder more than one full turn.
23. Once the nipple is positioned, turn the jam nut clockwise until
it contacts the gear box housing.
24. Tighten the jam nut with a wrench to tighten it against the
gear box housing.
25. Attach the high-pressure hose to the nipple on the back of the
cylinder and tighten with a wrench. Do not kink the hose.
26. Insert the adapter (Fig. 14, item 3) into the bottom of the
cylinder.
27. Making sure that the bearing ring (Fig. 12, item 3) and O-rings
(Fig. 12, items 4-5) are lubricated and in place, reassemble
the inlet valve assembly and and thread it into the cylinder.
Tighten the inlet valve housing until the o-ring engages,
then continue to tighten until snug. Once snug, tighten an
additional 1/8–1/4 turn.
28. Thread the siphon tube/suction set into the inlet valve
housing and tighten securely. Make sure to wrap the threads
on the down tube/siphon hose adapter with PTFE tape before
assembly.
29. Replace the return hose into the clamp on the siphon tube.
30. Place the front cover on the gearbox housing and secure in
position using the four front cover screws.
Performance Series 850e