High Pressure Relief Valve Repair - Danfoss H1P 045 Service Manual

Service Manual
H1P 045/053/060/068 Axial Piston Single Pumps
Minor Repair

High Pressure Relief Valve Repair

© Danfoss | June 2020
L060
L068
L150
P106 039E
see table
1. Using a hex wrench wrench shown in the table below, remove the HPRVs (L150).
2. Inspect the sealing surfaces in the pump for nicks or scratches, check the valves for damage.
3. Replace any damaged components.
4. Remove and discard the O-rings (L060) and backup rings (L068).
5. Lubricate and install new backup rings (L068) and O-rings (L060).
6. Install HPRVs, and torque to the value in the table.
Frame size
069/078/089/100
115/130/147/165/210/250
7. Operate the vehicle/machine through full range of controls to ensure proper operation.
8. Check for leaks.
Wrench size Torque
22 mm 70 N•m [52 lbf•ft]
30 mm 110 N•m [81 lbf•ft]
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