Danfoss 45 K2 Series, Инструкции по ремонту

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Overview
This manual details the major repair procedures for Series 45 Frame K2 open circuit axial piston pumps.
These include the complete disassembly, inspection, and reassembly of the unit. Where rework of worn
or damaged components is possible, specifications are given to ensure these parts meet factory
tolerances. Only Danfoss Authorized Service Centers (ASCs) are authorized to perform major repairs.
Danfoss ASCs are trained by the factory to perform major repairs and their facilities are certified on a
regular basis.
W
Warning
Use of components that do not comply with rework specifications may result in loss of performance,
which may constitute a safety hazard. Do not reuse components that don’t comply to given
specifications: replace with genuine Danfoss service parts.
Minor repair procedures, adjustments, and troubleshooting information are given in the Series 45 Frame
K2 Open Circuit Axial Piston Pumps Service Manual, AX00000304. Minor repairs include service
operations that can be performed without removing the unit’s endcap. Removal of the endcap voids your
warranty.
General instructions
Follow these general procedures when repairing Series 45 variable displacement open circuit pumps.
Remove the unit
Prior to performing major repairs, remove the unit from the vehicle/machine. Chock the wheels on the
vehicle or lock the mechanism to inhibit movement. Be aware that hydraulic fluid may be under high
pressure and / or hot. Inspect the outside of the pump and fittings for damage. Cap hoses after removal
to prevent contamination.
Keep it clean
Cleanliness is a primary means of assuring satisfactory pump life, on either new or repaired units. Clean
the outside of the pump thoroughly before disassembly. Take care to avoid contamination of the system
ports. Cleaning parts by using a clean solvent wash and air drying is usually adequate.
As with any precision equipment, all parts must be kept free of foreign materials and chemicals. Protect
all exposed sealing surfaces and open cavities from damage and foreign material. If left unattended,
cover the pump with a protective layer of plastic.
Lubricate moving parts
During assembly, coat all moving parts with a film of clean hydraulic oil. This assures that these parts will
be lubricated during start-up.
Replace all O-Rings and gaskets
It is recommended that all O-rings be replaced. Lightly lubricate all O-rings with clean petroleum jelly
prior to assembly.
Repair Instructions
Series 45 Frame K2 Axial Piston Pumps
Introduction
4 | © Danfoss | April 2017 AX00000305en-US0101