Ulvac DOP-181S Series Instruction Manual page 26

6-4-6. Replace the cylinder-gasket (No.10), Cup-packing (No.14).
Refer to the exploded view (Fig 6-1), clause 6-4-2(Disassembling the pump).
Remove the cylinder and the cylinder-plate.
Cylinder-gasket assembled between the cylinder and the cylinder-plate.
Remove the cylinder gasket and place a new cylinder gasket.
Cup-packing assembled between the cup-packing-retainer and the connecting-rod.
Remove the bolts (M8 *20) that fasten the cup-packing-retainer to the connecting-rod.
Remove the cup-packing and place a new cup-packing.
Photo 5: Cylinder Parts Direction
Photo7: Cylinder Gasket
6-4-7. Reassembling the pump
Refer to the exploded view (Fig 6-1), clause 6-4-2(Disassembling the pump).
Place the cup-packing, cup-packing-retainer to the connecting-rod and tighten bolt (M8*20)
in 12.0 N.m.
Carefully insert the cylinder to the connecting-rod assembly.
Place the cylinder gasket to the cylinder-plate.
Place the cylinder-plate (with gasket), inlet/outlet valve, valve-retainer to the cylinder.
Carefully insert the connection-pipe (with O rings) to the pump-head.
Place the head-gasket into the gasket groove in the pump head.
Place the pump-head assembly to the cylinder assembly.
Tighten all bolts (M6 *90L*8, No.1) temporary to the casing at first, and tighten it at the
opposite angle in 5.0 N.m.
→INLET
→OUTLET
Photo 6: Cylinder Parts
Photo8: Cup-packing, Connecting-rod
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