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 Wrench size Torque
069/078/089/100 22 mm 70 N•m [52 lbf•ft]
115/130/147/165/210/250/280 30 mm 110 N•m [81 lbf•ft]
7. Operate the vehicle/machine through full range of controls to ensure proper operation.
8. Check for leaks.
Charge Pressure Relief Valve Repair
Caution
Replace the charge pressure relief valve (V010) as a complete unit. Do not attempt to repair the internal
components of the valve.
P106 040E
V010
V024
22 mm
52 N•m
[38 lbf•ft]
1. Using a 22 mm wrench, remove the charge pressure relief valve (V010).
2. Discard a seal (V024).
3. Inspect the sealing surfaces of the pump for nicks or scratches.
4. Lubricate and install the new seal (V024).
5. Install the charge pressure relief valve, and torque to 52 N•m [38 lbf•ft].
6. Operate vehicle/machine through full range of controls to ensure proper operation.
See Charge Pressure Relief Valve Adjustment for adjustment instructions.
Pressure Limiter Repair
Warning
Pumps with only HPRV valves no longer contain pressure limiter screens and retainers. To convert such
pumps to those with pressure limiter valves, please contact your Danfoss service partner.
H1P Base Models with pressure setting option B include PL screens and retainers.
Caution
Replace the pressure limiter valve (V010) as a complete unit. Do not attempt to repair the internal
components of the valve.
Service Manual
H1P 069—H1P 280 Axial Piston Single Pumps
Minor Repair
62 |
©
Danfoss | January 2021 AX152886482551en-000601
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