1. Using a 22 mm or 24 mm wrench, remove the pressure limiter valve (L100), and discard the O-ring.
2. Inspect the sealing surfaces of the pump for nicks or scratches.
3. Install new O-ring.
O-ring is available separately.
4. Lubricate O-ring with petroleum jelly.
5. Replace pressure limiter valve and torque to the value in the table below.
Frame size Wrench size Torque
069/078/089/100/115/130/147/165 22 mm 70 N·m [52 lbf·ft]
210/250/280 24 mm 70 N·m [52 lbf·ft]
6. Operate pump at full range of controls to ensure proper machine operation.
See Pressure Limiter Adjustment on page 35 for adjustment instructions.
Service Manual
H1P 069—H1P 280 Axial Piston Single Pumps
Minor Repair
©
Danfoss | January 2021 AX152886482551en-000601 | 63
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