Tuthill KINNEY 850D, Operator'S Manual

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17. Remove the retaining ring from the shaft. Loosen the socket head self-locking screws in the removable
wall to release the pins securing the wall to the cylinder. Remove the wall, being careful not to cock it
as it is removed.
18. Withdraw the slide-pin, piston and slidepin spacer.
19. Remove the open head following the same procedure as removing the closed head and press the
bearing from the head.
20. Withdraw the piston, slide-pin and cam.
21. The shaft and center cam can be taken out of the closed head end of the pump. Press the center cam
from the shaft.
8.5 ASSEMBLY
Thoroughly clean all parts and remove harmful rough or sharp areas before assembling. Do not use solvents
such as kerosene or carbon tetrachloride for cleaning unless facilities are available to evaporate them by
vapor degreasing or washing with acetone or alcohol. When reassembling, all parts must be coated with
vacuum oil.
1. Place keys in the shaft grooves and press center cam on shaft until it is against the shaft shoulder. It
may be desirable to heat the cam in vacuum oil to approximately 300°F (150°C) for easier assembly.
2. Temporarily mount open head (with sleeve bearing pressed in) using two dowel pins for alignment and
secure with three cap-screws. This will support shaft when assembling closed head end of pump.
3. From the closed head side, move the shaft through the hole in the stationary wall until the center cam
is against the wall.
4. Place the slide-pin over the slide on the center piston with the flat edges of the slide-pin toward the
piston and with the cap end to the left when facing the inlet ports.
5. With the piston port facing downward, insert the piston and slide-pin into the cylinder.
6. Carefully clean the removable wall seating shoulder. Insert the beveled ends of the dowel pins into the
outside edge of the floating wall. If necessary, use vacuum grease to hold the pins in the holes. Slide
the removable wall into the cylinder from the closed head side with the crescent shaped cutout in the
wall oriented to fit around the slide-pin. Place two pieces of .005 inch (.127 mm) shim stock at the ends
of the cutout between the slide-pin and removable wall. Screw new lock screws into the removable
wall and with the wall firmly against the cylinder shoulder, tighten the socket head set screws to drive
the dowel pins out against the cylinder to secure the wall in place. When tightening the center wall
set screws, do not exceed a torque of 90 inch pounds (10 N-m) as damage to the cylinder may result.
Remove the two pieces of shim stock.
NOTE
Lock screws in the removable wall should not be reused.
7. Install slidepin spacer.
8. Place the retaining ring on the shaft. Insert the cam keys in the shaft grooves and tap the outer cam
onto the shaft with the threaded holes of the cam outward.
9. Place the closed head slide-pin on the piston slide with the flat edge toward the piston. With the inlet
ports facing down, insert the piston and pin into the cylinder.
10. Press the sleeve bearing into the closed head. Apply a thin coat of Loctite 515, or equal sealing
compound to the sealing surfaces of the head and cylinder. Insert the two dowel pins into the cylinder
and install the closed head. Tighten cap screws evenly.
NOTE
Sealing compound must be used sparingly to prevent squeezing it into the
pump when tightening heads. Allow compound to become tacky before
installing heads.
11. Remove open head.
12. Install slidepin spacer.