1. Mark the location of each valve prior to removal.
2. Using a 22 mm wrench remove the HPRVs.
3. Remove and discard the O-rings (L060) and backup rings (L068).
4. Clean oil off the sealing surfaces and inspect the sealing surfaces for nicks or scratches. Check the
valves for damage. Replace any damaged components.
5. Lubricate and install new backup rings (L068) and O-rings (L060).
6. Install HPRV and pressure limiter valves in their original locations.
7. 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
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Danfoss | September 2020
AX152886481761en-000405 | 71