TB325 F-Roll Clamp Cylinder Back-up Rings
Contents
1. readings e f the gauge pressure on the cylinder continues to drop more than 150 psi 10 bar initially and additional drop exceeds 25 psi 2 bar per minute the cylinder piston seals are faulty Refer to Service Manual 674512 for cylinder service e If the gauge pressure on the cylinder does not drop more than 150 psi 10 bar initially and additional drop does not exceed 25 psi 2 bar per minute the check valve now in the other cylinder is faulty and requires replacement WARNING Before removing hydraulic lines position both arms at mid stroke to relieve cylinder pressure Turn the truck off and open the truck auxiliary control valves several times in both directions Cylinder Test Port Pressure Gauge Method B Measure Clamp Force Retention using a Clamp Force Indicator 1 Check for external leaks at the cylinders and revolving connection NOTE Connect the Digital Clamp Force Indicator to a power source Measurements will be taken automatically 2 Make sure both arms are not at the end of stroke when clamped on the Indicator Position the Clamp Force Indicator solidly against the short arm contact pad Center pad surfaces vertically and horizontally 3 Slowly clamp the long arm pad against the indicator pad Clamp fully at 2 3rd throttle holding the CLAMP lever several seconds Release and record the initial display value Determine if this value is correct and does not exceed clamp force re2. cascade TB 325 January 2013 cem eTM Tec h n i cal F Series Paper Roll Clamp F3 ti Cylinder Back up Rings and u e n Seal Service Kits 555227 amp 555725 Paper Roll Clamps manufactured prior to June 2011 may be Back up Rings equipped with cylinders that have rough cut piston seal back up rings Models affected are 25F 45F 77F 90F 100F 120F Cylinder seal service kits 555227 and 555725 shipped prior to June 2011 may also have rough cut piston back up rings The piston pressure seal back up rings may have rough cut edges on the diagonal split These rough edges could cut the piston pressure seal surface resulting in the leak down of clamping pressure Continue for two action items required for Seal Kits in inventory and existing Roll Clamps in operation RC4577 eps Action Item 1 Inspect Existing Inventory of Cylinder Seal Kits 555227 and 555725 We are relying on our dealers to inspect their existing inventory of Seal Kits 555227 and 555725 with the Batch Codes listed below and to communicate with end users who may also have seal kits in inventory Seal Kit 555227 with Batch Code prior to 262047 0001 Seal Kit 555725 with Batch Code prior to 263179 0002 Inspect the large back up rings in the seal kit The part number Clean cut edges C 638293 or C 638295 is molded into the side of the ring The back up rings must have clean cut edges on the diagonal split Rough edges on the split surfaces may cu
3. commended for rolls being handled NOTE Clamp Force required to prevent crushing is commonly marked on roll e f the indicator pressures drops more than 150 psi 10 bar initially and an additional drop exceeds 25 psi 2 bar per minute the cylinder check valve cartridges or piston seals may be faulty Continue troubleshooting using Service Manual 674512 e f the cylinder seals are isolated as needing service rebuild the cylinder using a seal kit that has had the back up rings inspected See Action item 1 for inspection Digital Clamp Force Indicator Measures up to 30 000 Ibs force 300G DFI 812C Split Arm Clamps 8 x 12 in Radiused Pads 300G DFI 824C Solid Arm Clamps 8 x 24 in Radiused Pads Analog Clamp Force Indicators Measures 5 000 to 25 000 Ibs force 300G CFI 812C Split Arm Clamps 8 x 12 in Radiused Pads 300G CFI 824C Solid Arm Clamps 8 x 24 in Radiused Pads S2 AC1139 eps Do you have questions you need answered right now Call your nearest Cascade Service Department Visit us online at www cascorp com AMERICAS Cascade Corporation Parts Sales 2501 Sheridan Ave Springfield OH 45505 Tel 888 CASCADE 227 2233 Fax 888 329 0234 EUROPE AFRICA Cascade Italia S R L European Headquarters Via Dell Artigianato 1 37030 Vago di Lavagno VR Italy Tel 39 045 89891 11 Fax 39 045 8989160 ASIA PACIFIC Cascade Japan Ltd 2 23 2 Chome Kukuchi Nishimac
4. g arm cylinder s test port Close the long arm fully and hold the handle in the CLAMP position a few seconds to develop full truck system pressure Watch the gauge pressure readings Short Arm Cylinders Install a pressure gauge to each short arm cylinder s gauge port Rotate the Clamp to the 45 degree position Close the short arm fully and hold the handle in the CLAMP position a few seconds to develop full truck system pressure Watch the gauge pressure readings e f one of the gauge pressures drops more than 150 psi 10 bar initially and additional drop exceeds 25 psi 2 bar per minute the cylinder check valve cartridge or piston seals may be faulty Continue troubleshooting e f both gauge pressures do not drop more than 150 psi 10 bar initially and additional drop does not exceed 25 psi 2 bar per minute the problem is not hydraulic Review the Operator Guide for proper roll handling techniques 3 Position both arms at mid stroke to relieve cylinder pressure Remove swap and reinstall the cylinder check valve cartridges 4 Long Arm Cylinders Close the long arm fully and hold the handle in the CLAMP position a few seconds to develop full truck system pressure Watch the gauge pressure readings Short Arm Cylinders Rotate the Roll Clamp to the 45 degree position Close the short arm fully and hold the handle in the CLAMP position a few seconds to develop full truck system pressure Watch the gauge pressure
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6. t the piston pressure seal surface resulting in the leak down of clamping pressure Back up Rings must have clean cut edges RC4578 eps at the diagonal split If you identify rough cut back up rings in a kit or have any Rough cut edges question as to the condition of the ring contact Cascade to arrange returning the seal kit to the Cascade Parts Depot for an exchange kit See contacts on front of this document NOTE This information should not be interpreted as the basis for warranty claims unless so designated Cascade Corporation For Technical Support To Order Parts Call 1 800 CASCADE 227 2233 Call 1 888 CASCADE 227 2233 OR OR Write Cascade Corporation PO Box 20187 Portland OR 97294 0187 Write Cascade Corporation 2501 Sheridan Ave Springfield OH 45505 Action Item 2 25F 45F 77F 90F 100F 120F Roll Clamps in Operation Clamp force should be checked prior to each operational shift and at 100 hour Preventive Maintenance intervals Use Method A or B to check clamp force retention Clamps equipped with force control technology require special considerations consult Cascade Refer to Service Manual 674512 to calibrate or check system performance Method A Cylinder Pressure Test Using Gauges 1 Check for external leaks at the cylinders and revolving connection Position both arms at mid stroke to relieve cylinder pressure 2 Long Arm Cylinders Install a pressure gauge to each lon
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