Danfoss VCM 46 Service Manual

Non-return valve, disassembling and assembling

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Service guide

Non-return valve

VCM 46

Disassembling and Assembling

Disassembling

1. Mount the VCM 46 into a vice with

aluminum trays.

The Service guide covers the instruction for

disassembling and assembling the VCM 46 Non-

return valve.

IMPORTANT:

It is essential that the VCM 46 is serviced in

conditions of absolute cleanliness.

WARNING:

Do not use silicone when assembling the VCM

46. Do not reuse disassembled O-rings; they

might be damaged.

Always use new O-rings.

For a better understanding of the VCM 46, please

see the sectional view.

Tools needed:

• Snap ring pliers or nylon mandrel

• Screwdriver

2. Turn the nut CCW with snap ring pliers.

180R9420 | AX323840049566en-000101 | 1

Page 1 The Service guide covers the instruction for disassembling and assembling the VCM 46 Non- return valve. IMPORTANT: It is essential that the VCM 46 is serviced in conditions of absolute cleanliness. WARNING: Do not use silicone when assembling the VCM 46.
Page 2 Service guide | Disassembling and Assembling VCM 46 4. Remove the nut. 3. Alternatively use a mandrel made of nylon. 5. Remove the spring. 6. Remove the valve cone. 7. Remove the O-ring at the cone with a small 2. Remove the O-ring at the thread end of the screw driver.
Page 3 Service guide | Disassembling and Assembling VCM 46 Assembling 1. Lubrication: • To prevent seizing-up, lubricate threads with PTFE lubrication type. • O-ring inside VCM 46 may be lubricated only with clean filtered water. • O-rings at the thread end must be lubricated.
Page 4 Service guide | Disassembling and Assembling VCM 46 7. Screw in the nut. 8. Tighten the nut with a snap ring pliers. 9. Alternatively use a plasitc mandrel. © Danfoss | DCS (im) | 2019.11 180R9420 | AX323840049566en-000101 | 4...
Page 5 Spare part list Pos. Qty. Designation Material Seal set 180H4000 O-ring 35.00 x 3.00 O-ring 58.00 x 2.00 Danfoss A/S High Pressure Pumps Nordborgvej 81 DK-6430 Nordborg Denmark © Danfoss | DCS (im) | 2019.11 180R9420 | AX323840049566en-000101 | 5...