Minster IOI, Руководство по обслуживанию

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8. Remove the four (4) clamping collars from the
trunion pins. Remove the two (2) trunion pins
which secure the die cushion to the press frame.
Remove the die cushion from the press.
9. Turn the die cushion assembly over so the bottom
plate is facing upward. Then remove the twelve (12)
.750” - 10 x 4.25” long Hex. Head Cap Screws that
secure the bottom plate to the lower cylinder. Two
(2) of the mounting bolt holes are tapped (1.00” - 8)
for handling purposes. Install eyebolts in these
holes and remove the bottom plate and gasket.
10. Two (2) .500” - 13 tapped holes are provided in the
bottom of the die cushion piston for handling pur-
poses. Install eyebolts in the tapped holes and pull
the die cushion piston from the lower cylinder.
11. Remove the piston seal and discard. Install new
piston seal in the piston. Apply a liberal coat of
grease lubricant to the new seal. Install piston seal
over the piston (being especially careful not to nick
or damage the seal) and push the seal into the
seal groove.
12. Apply a liberal amount of grease lubricant on the
inside of the lower cylinder and on the outside of
the piston. Then reinstall piston in lower cylinder
until piston bottoms out in lower cylinder, being
careful not to damage the seal.
13. Place a new gasket on the lower cylinder, then
install the bottom plate. Secure the bottom plate to
the lower cylinder with twelve (12) .750” - 10 x
4.25” long Hex. Head Cap Screws. Apply Loctite
Adhesive Grade 242 (Blue Liquid) to the threads
of the screws, install the screws, and torque them
to the value shown in the chart on page C-3.
14. Turn the die cushion assembly over so the die
cushion piston is facing upward. Then reinstall die
cushion unit in press and lift the die cushion to
align the trunion pin holes in the die cushion with
the trunion pin holes in the press frame. Install the
trunion pins and secure them with four (4) clamp
collars.
15. Install the cover plate on the die cushion piston
and secure it with four (4) .625” - 11 x 1.75” long
Socket Head Cap Screws. Apply Loctite Adhesive
Grade 242 (Blue Liquid) to the threads of the
screws, install the screws, and torque them to the
value shown in the chart on page C-3.
16. Reconnect pipe unions in the air supply lines that
feed, and are directly attached to, the die cushion
and air cylinder. Apply Loctite Hydraulic Sealant
(H/S) No. 569 (Brown Liquid) to the threads of the
fittings.
E - 14
Cover Plate
Trunion Pin
Piston Seal
Lower Cylinder
Gasket
Bottom Plate
Air Tank
~
Trunion Pin
Cylinder Piston
Figure 10E. Trunion mounted die cushion.