Related Manuals for Danfoss APP S 674 2.0-3.5
Summary of Contents for Danfoss APP S 674 2.0-3.5
- Page 1 MAKING MODERN LIVING POSSIBLE Instruction Disassembling and assembling APP S 674 2.0-3.5 pumps ro-solutions.com...
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Page 2: Table Of Contents
Exploded view APP S 674 2.0-3.5 pumps ........ -
Page 3: Introduction
Instruction Disassembling and assembling APP S 674 2.0-3.5 Introduction Important: It is essential that the pump is Tools needed: serviced in conditions of absolute cleanliness. • 6 mm allen key For a better understanding of the pump, please • 8 mm allen key see the exploded view in item 9. - Page 4 Instruction Disassembling and assembling APP S 674 2.0-3.5 Remove ceramic ring from cover by Clean and then wet the shaft with clean carefully pushing it from the back of the water. sealing ring with a screwdriver. Through the inlet port lever the shaft seal...
- Page 5 Instruction Disassembling and assembling APP S 674 2.0-3.5 Place pump on a distance block. Make sure Remove end flange. there is enough free space for the shaft beneath the housing. Remove all bolts. Distance block Swash plate must be placed so that its Remove the 2 pistons.
- Page 6 Instruction Disassembling and assembling APP S 674 2.0-3.5 Remove the retainer guide and the spring. Remove the guide pin. Pull the cylinder barrel straight upwards in a continuous lift to ensure no damage of house bearing. This can only be done if the shaft seal is removed.
- Page 7 Instruction Disassembling and assembling APP S 674 2.0-3.5 Remove the guide pin. Turn the pump upside down. Unscrew the 8 bolts in port flange. Note: The following operation is only necessary if O-ring on port flange has to be changed.
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Page 8: Assembling The Pump
Instruction Disassembling and assembling APP S 674 2.0-3.5 Assembling the pump WARNING: Important: Do not use silicone when assembling the It is essential that the pump is serviced in pump. Do not reuse disassembled O-rings; conditions of absolute cleanliness. All parts they might be damaged. - Page 9 Instruction Disassembling and assembling APP S 674 2.0-3.5 Carefully press the port flange downwards. Lubricate the threads with PTFE lubrication. Do not squeeze the O-ring. If the O-ring is Insert screws on the port flange. Tighten damaged, the pump will leak.
- Page 10 Instruction Disassembling and assembling APP S 674 2.0-3.5 Place the pump on a distance block. Make Carefully lower cylinder barrel into the sure, there is enough free space for the housing. shaft beneath the housing. Lubricate inside. WARNING: If cylinder barrel is dropped or lowered too fast into housing, main bearing and shaft bearing might be damaged.
- Page 11 Instruction Disassembling and assembling APP S 674 2.0-3.5 Ensure the retainer plate is oriented Lubricate and position the pistons in the correctly. retainer plate and cylinder barrel. Lubricate the piston shoes. Tilt retainer Change and lubricate O-ring in the end plate for easier placement of swash plate.
- Page 12 Instruction Disassembling and assembling APP S 674 2.0-3.5 Lubricate and press new ceramic ring into the shaft seal cover by using the press bush tool. WARNING: Ensure that the face with rubber seal is positioned against shoulder in shaft seal flange.
- Page 13 Instruction Disassembling and assembling APP S 674 2.0-3.5 Right position of the spring can be Position the shaft seal cover on shaft. Be inspected through the flushing valve hole. careful not to damage the ceramic ring. Shaft seal mounted. WARNING! Be careful, the shaft has sharp edges.
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Page 14: Disassembling And Assembling Of The Swash Plate
Instruction Disassembling and assembling APP S 674 2.0-3.5 Disassembling and Unscrew centre bolt from swash plate. Remove swash plate, guide pin and O-ring. assembling of the swash plate O-ring Place guide pin and carefully align swash Lubricate centre bolt thread with a PTFE plate over guide pins. -
Page 15: Disassembling And Assembling Of Cylinder Barrel And Valve Plate
Instruction Disassembling and assembling APP S 674 2.0-3.5 Disassembling and Carefully lift valve plate assembly free with Replace O-rings and back-up rings on valve assembling of cylinder the aid of a screwdriver. plate. barrel and valve plate Backup- O-ring ring... -
Page 16: Disassembling And Assembling Of The Flushing Valve
Instruction Disassembling and assembling APP S 674 2.0-3.5 Disassembling and Remove shaft seal cover. Carefully push the flushing valve up assembling of the through the outlet connection, using a flushing valve small screwdriver. Remove complete flushing valve set. Flushing valve parts... -
Page 17: How To Replace The Shaft Seal
Instruction Disassembling and assembling APP S 674 2.0-3.5 How to replace the Disassembling, please see Assembling, please see shaft seal Page 3 items 2 to 4 Page 12 item 22 to 26 Page 4 items 5 to 6 Page 13 items 27 to 29 Changing pistons 8.1 Disassembling... - Page 18 Instruction Disassembling and assembling APP S 674 2.0-3.5 WARNING: Remove retainer plate and ball. Ensure that the piston shoes and the piston surfaces are not damaged during removal. It is recommended to place the pistons upside down on an even and clean base/surface.
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Page 19: Assembling
Instruction Disassembling and assembling APP S 674 2.0-3.5 8.2 Assembling Ensure the liner and the end of cylinder Place the spring. barrel are wetted. Place the guide. Place the ball on the retainer plate. WARNING! Ensure right assembling and placement of the retainer plate. - Page 20 Instruction Disassembling and assembling APP S 674 2.0-3.5 Replace the O-ring and mount the flange. Mount two screws as shown below and Ensure the guide pin is mounted. tighten them. Mount the remaining bolts and cross Connect the pump to the rest of the tighten them to a torque of 30 Nm ±...
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Page 21: Exploded View App S 674 2.0-3.5 Pumps
Instruction Disassembling and assembling APP S 674 2.0-3.5 Exploded view APP S 674 2.0-3.5 pumps 180R9281 / 521B1275 / DKCFN.PI.013.C3.02 / 05.2013... -
Page 22: When Should The Pistons Be Replaced
Denmark Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.