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Instruction
Disassembling and assembling APP S 674 2.0-3.5
22
180R9281 / 521B1275 / DKCFN.PI.013.C3.02 / 05.2013
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This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
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Danfoss A/S
High Pressure Pumps
DK-6430 Nordborg
Denmark
10.
When should the
pistons be replaced
This section provides guidance on, how to
determine whether the parts of the pump are
worn and should be replaced. In case of doubt
- the pistons must be replaced. The pictures
below are meant as a guideline for evaluating
the wear of the sliding surface.
Note: If the pistons break down, the pump will
suffer a disastrous breakdown.
Picture 1:
Cavitation of the piston shoes.
New inspection is required in 3,000-4,000 hours.
Picture 2:
Cavitation of the piston shoes.
All pistons must be replaced within the next
500-1,000 hours.
Picture 3:
Cavitation of the piston shoes.
All pistons must be replaced within the next
100-200 hours.
Picture 4:
Abrasive wear of the piston shoes.
All pistons must be replaced immediately.