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
34
Coat the piston insertion tool (i.e. upper packing
i
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).
Make sure the raised lip on the bottom of the
i
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.
If the nipple on the cylinder does not face
i
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 Teflon
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