Minster IOI, Руководство по обслуживанию

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9. Turn the die cushion assembly over so the bottom
plate is facing upward. Remove the eight (8) 1.00”
- 8 x 2.50” long Socket Head Cap Screws that
secure the bottom plate to the lower cylinder. Two
(2) of the mounting bolt holes are tapped (1.25” -
7) 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 and
install the bottom plate. Secure the bottom plate to
the lower cylinder with eight (8) 1.00” - 8 x 2.50”
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.
14. Turn the die cushion assembly over so the die
cushion piston is facing upward. Install the cover
plate on the die cushion piston and secure 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.
15. Reinstall die cushion unit in press, securing unit to
press using the .500” - 13 x 2.50” long Hex. Head
Cap Screws previously removed.
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.
17. Apply enough air to the die cushion to lift the die
cushion piston and allow the cylinder stop to be
reinstalled. Apply Loctite Adhesive Grade 242
(Blue Liquid) to the threads of the cylinder stop,
and reinstall the cylinder stop in lower cylinder.
To Replace Trunion Mounted
Die Cushion System Air Seals:
(Ref. Figure 10E)
NOTE: The following procedure applies to Minster die
cushions only. Refer to service information sup-
plied by the die cushion manufacturer when ser-
vicing a die cushion that was provided by an
alternate vendor.
1. Stop the main drive motor.
2. Place the POWER, OFF-ON or POWER, OFF-ON-
BAR Selector Switch (whichever is applicable) in
the OFF position and remove the key (if applicable)
to lock the switch in the OFF position.
3. Lock the disconnect switch in the OFF position.
Make certain that the flywheel has stopped turning
completely. Attach a WARNING sign to the press
controls to advise other personnel that the press is
currently being serviced.
4. Shut OFF the air supply to the press and lock the air
lockout valve.
5. Discharge all air pressure from die cushion. To be
certain all pressure is released from the unit, discon-
nect pipe unions in the air supply lines that feed, and
are directly attached to, the die cushion unit.
WARNING
NEVER ATTEMPT TO DISMANTLE ANY PART OF
THE DIE CUSHION ASSEMBLY UNTIL ALL PRES-
SURE WITHIN THE UNIT HAS BEEN COMPLETELY
DISCHARGED.
6. Using a forklift, support the die cushion from below.
7. Remove the four (4) .625” - 11 x 1.75” long Socket
Head Cap Screws that secure the cover plate to the
die cushion cylinder piston. Two (2) of the mounting
bolt holes are tapped (.750” - 10) for handling pur-
poses. Install eyebolts in these holes and remove the
cover plate.
WARNING
MAKE CERTAIN THAT THE CRANE OR HOIST AND
ASSOCIATED CABLES, CHAIN AND HOOKS ARE
CAPABLE OF SAFELY LIFTING THE WEIGHT
INVOLVED.
E - 13
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