Cincinnati Hydraulic Press Brake 90 CBII x 6 FT.

Run ram to the maximum down position and block both ends of the ram

Turn OFF machine and LOCK the electrical disconnect

Remove ram pin cover plate on front of ram using extractor bar

Swing cylinder out from ram and insert wooden block between cylinder and housing so piston rod is clear of ram

Remove 6 or 8 bolts from seal retainer and insert 3 or 4 3/8\ x 1\" (or longer) set screws into tapped holes in retainer. Tighten set screws to back-off retainer"

Support retainer to keep from falling free and remove seal retainer

Remove seal from groove in bore of seal retainer. The seal has an energizing \o\" ring to pre-load the seal"

Replace with a new seal. Also inspect non-metallic bearing strip in bore of seal retainer and \o\" ring seal in top face of retainer. Replace if necessary"

Using auto body slide hammer-puller, remove the piston rod seal. This seal has no energizing. Be careful not to damage finished surface of piston rod or lower head seat

Cap removed and back blow performed

Low pressure air hose used for back blow

Enter the current operating hours

Suction strainer replaced if operating hours are more than 1000 or it's been 6 months

Filter cartridge replaced if operating hours are more than 1000

Sign off on the air breather cleaning

Set tilt control adjusting knob and pointer to their 'zero' positions

Adjust the speed control cams so the ram approaches the bottom of the stroke in low speed

Mount a dial indicator on the extreme right end of the bed so it indicates the bottom reversal point of the ram

Verify that the ram is reversing consistently to the same indicator setting

Without changing the indicator or bottom stroke stop setting, reposition the dial indicator at the extreme left end of the bed

Run a number of strokes, adjusting the tilt control knob to raise or lower the left end of the ram, until the indicator reads the same as it had at the right end of the machine

Repeat Steps 4, 5 and 6 until both ends of machine have the same indicator reading at the ram reversal point

If necessary, replace the tilt adjusting knob graduated decal aligning its zero position. Also adjust the tilt pointer to its zero position

Sign off on the bed and ram level check

Lubricate cylinder clevis pin(s)

Clean and flush ram guides with oil

Check for water in reservoir(s)

Check reservoir oil level(s) everyday

Check lubrication at both guides everyday

Clean leveling band every 1 week

Lubricate stroke adjustment and tilt adjustment screws every 1 week

Check ram guide clearances – relevel if necessary

Adjust swivel end guide bearings