Danfoss Series 40 M46 Tandem

Inspection
Inspect all parts for damage. Inspect the mating surfaces of the servo cover (902) and motor housing
for scratches, grooves, and other damage. Inspect threads of screws and nuts for damage. Replace
any damaged parts.
Reassembly
1. Turn displacement limiter (913) into servo cover (902). Install new gasket (936) and turn servo cover
(902) onto neutral adjustment screw.
2. Using a 3/8 hex wrench, install five bolts (921). Torque to 15•Nm [11 lb•ft].
3. Use a flat screw driver to hold displacement limiter. Use a 9/16 hex wrench to install seal nut (927)
onto displacement limiter (913) at the position noted during disassembly. Torque to 19 N•m [14 lb•ft].
Install sleeve (929) and snap ring (928).
4. Using a 1/4 hex wrench to hold neutral adjustment screw and a 9/16 hex wrench, install hex nut
(2115) onto neutral adjustment screw at the position noted during disassembly. Torque to 37 N•m [27
ft•lb].
Displacement limiter removal-installation
2161
902
921
3/8 in
913
2115
9/16 in
927
9/16 in
Servo neutral
adjustment screw
929
928
Pressure filtration adapter
Removal
1. Using a 11/16 hex wrench, remove plug (810). Remove and discard O-ring (810A).
2. Using a 1/2 in hex wrench, remove bolts (806).
3. Remove pressure filtration cover (801). Remove and discard gasket (805).
Service Manual
Series 40 M46 Tandem Variable Pumps
Minor repair
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Danfoss | September 2017 11029852 | AX00000030en-US0202