Charge Check and HPRV Repair (045/053)
The high pressure relief and charge check valve assemblies may be removed for cleaning and
replacement of the O-rings. These valves are factory set and are not field adjustable. Refer to the pump
model code for the factory setting when ordering replacements.
Charge check / HPRV
80 N•m
[59 lbf•ft]
K010
K009
K008
K007
H003
H002
R150 (4X)
R200 (4X)
8 mm
Rear pump location shown. There are four valve assemblies in total.
1. Using an 8 mm internal hex wrench, remove the valve seat plugs (K007).
2. Carefully lift the valve (H002) and spring (H003) assemblies from the center section using a magnet.
3. Inspect the valves and mating seats in the valve seat plugs (K007) for damage or foreign material.
4. Lubricate and install new O-rings (K008, K010) and backup ring (K009) on valve seat plug (K007).
5. Verify that the conical springs (H003) are properly retained on the check relief valves (H002).
6. Install the valve assemblies into the center section.
Ensure each valve assembly moves freely in its bore.
7. Install the valve seat plugs into the center section and torque to 80 N•m [59 lbf•ft].
8. Operate the vehicle/machine through its full range of control to ensure proper operation. Check for
leaks.
Service Manual
H1T 045/053, 060/068 Axial Piston Tandem Pumps
Minor repair
68 |
©
Danfoss | September 2020 AX152886481761en-000405
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