Danfoss PAHT G Series Instruction - Page 17

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Danfoss PAHT G Series Instruction
Instruction
7.
When should the
pistons be replaced
Disassembling and assembling PAHT and PAHT G 256-308
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.
1. No wear or cavitation of the piston
shoe. New inspection is required in
4,000 hours.
3. Cavitation of the piston shoes.
All pistons must be replaced within the
next 1,000 hours.
180R9268 / 521B1236 / DKCFN.PI.011.B3.02 / 01.2015
2. Cavitation of the piston shoes.
New inspection is required in 2,000 hours.
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