Danfoss MP1 Service Manual

MP1 HPRV valve removal
Follow these steps to safely remove the high pressure relief valves.
1. Using a 5/16 inch internal hex, remove the HPRV's (N100/M100).
2. Remove and discard the O-rings (M023) and backup rings (M022).
MP1 HPRV torque information
HPRV valves removal
P108950
N100
M022
M023
M100
M022
M023
N100
M022
M023
M100
M022
M023
38/4528/32
Identification and torque
Item Wrench size Torque
HPRV Valve (N100/M100) 5/16 inch internal hex 81.0 N•m [59.7 lbf•ft]
HPRV valve inspection
Inspect the sealing surfaces in the pump for nicks or scratches. Check the high pressure relief valves
for damage. Replace any damaged components.
HPRV Valve Reassembly
1. Lubricate and install new O-rings (M022) and backup rings (M023).
2. Install the HPRV valves. Torque to the value shown in the table.
3. Operate the vehicle/machine through its full range of control to ensure proper operation. Check for
leaks.
Charge Pressure Relief Valve (CPRV)
MP1 CPRV removal
Follow these steps to safely remove the charge pressure relief valves.
1. Using a 1 inch wrench, remove the charge pressure relief valve (V100).
2. Remove and discard O-ring (QV110).
3. Use a small hook or magnet to remove washer(s) (V200), spring (V300), and seat (V400).
Service Manual
MP1
Minor repair
©
Danfoss | April 2019 AX00000244en-000201 | 59

Danfoss MP1 Specifications

General

Brand	Danfoss
Model	MP1
Category	Water Pump
Language	English