Inspection
Inspect all parts for damage. Inspect the mating surfaces of the servo cover (902) and pump housing
for scratches, grooves, and other damage. Inspect threads of screws and nuts for damage. Replace
any damaged parts.
Reassembly
1. Turn displacement limiter (911) into servo cover (902). Install new gasket (936) and turn servo cover
(902) onto neutral adjustment screw.
2. Using a 3/8 in. hex wrench, install five bolts (921). Torque to 15 N•m [11 lbf•ft].
3. Adjust displacement limiter to position originally noted during disassembly. Use a flat screw driver to
hold displacement limiter. Use a 9/16 in. hex wrench to install seal nut (927) onto displacement
limiter (911). Torque to 19 N•m [14 lbf•ft].
4. Set neutral adjustment screw at the position noted during disassembly. Use a 1/4 in. hex wrench to
hold neutral adjustment screw and a 9/16 in. hex wrench to install hex nut (115). Torque to 37 N•m
[27 lbf•ft]. Install sleeve (929) and snap ring (928).
Displacement limiter removal/installation
P106 641E
936
902
921
3/8 in
911
115
9/16 in
927
9/16 in
Servo neutral
adjustment screw
929
928
Pressure filtration adapter
Removal
1. Using an 11/16 in. hex wrench, remove plug (810). Remove and discard O-ring (810A).
2. Using a 1/2 in. hex wrench, remove screws (806).
3. Remove pressure filtration cover (801). Remove and discard seal adapter (805).
Inspection
Inspect the machined surface on the control. If any nicks or scratches are found, replace the damaged
component.
Reassembly
1. Install new seal adapter (805) and filtration cover (801).
2. Using a 1/2 hex wrench, install three screws (806). Torque to 30 N•m [22 lbf•ft].
Service Manual
Series 40 M46 Variable Pumps
Minor repair
©
Danfoss | September 2017
11026743 | AX00000027en-US0202 | 29