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5500 SERIES API RACK COUPLER Item Description Part # Body 341933 Shaft 391876 Cotter Pin 112307 Sleeve Assembly 400764 Valve Assembly 400739 Nose Seal Assy - 400741 FKM B Nose Seal Assy - 400745 EPDM Nose Seal Assy - 400746...
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API RACK COUPLER – 5500 SERIES 090140 REV5 2021/12/15 877.582.3569...
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*Items are optional PTFE U seals. When the U seals are added to the coupler, they isolate the main rubber seals from the liquid being conveyed, thereby increasing the longevity of the rubber seals. Contact Dixon for kit numbers. 090140 REV5 2021/12/15...
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These instructions and recommendations are provided to ensure proper operation and long service life of the Dixon 5500 API rack coupler. Parts are identified by the item numbers on the assembly drawing and part list. SUGGUESTED MAINTENANCE SCHEDULE: 1. MONTHLY INSPECTION Visual inspection of the API rack coupler operation can be done while the API rack coupler is still on the loading arm.
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Warning: If the shoulder screws (21 and 27) break, this can cause the poppet to be left in partially open position which may cause spill. Replace the shoulder screws (21 and 27) when they show sign of wear or damage. Visually examine the nose piece assembly every 12 months for significant dirt accumulation that could cause nose piece seal leakage.
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Note: Valve assembly (5) and parts can only be replaced when the API rack coupler is off the rack. The design of the Dixon API rack coupler shaft (2) makes it easy to remove the valve assembly from the API rack coupler as a whole. This makes it easy to replace the whole valve assembly (5) or any individual part of the valve assembly (5).
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shaft (2) into the shaft end pocket on the body (1). Pay attention to the orientation of the valve assembly. 7. Rotate the handle (10) to fully closed position. Install the shaft cotter pin (3) onto the shaft (2). 8. Check the API rack coupler with an API adapter to make sure all components are assembled properly.
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• Remove nose seal (6.3), O-Ring (6.2), nose piece dust ring (6.4) and u-seal (6.5, if applicable) from the nose piece (6.1). • Inspect the nose piece (6.1) and make sure it is not damaged. Clean seal surfaces carefully. • Replace nose seal (6.3), O-Ring (6.2), nose piece dust ring (6.4) and u-seal (6.5, if applicable) with new ones.
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API rack coupler back onto the loading arm. DIXON WARRANTY: For Warranty Information, please refer to the inside back cover of the latest Dixon Catalogue. 090140 REV5 2021/12/15...
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