Control Housing Assembly - Danfoss 51 Series Service Manual

Service Manual
EP, EQ, ER, ES Controls
Series 51 Electrohydraulic Proportional Controls Service Manual
PCOR Valve Assembly
Legend
Item
N27
N23
U6, U7
N29
N14

Control Housing Assembly

1. Lubricate and install new O-ring (M42A).
2. Install plug (M42). Using a 1/8 internal hex, torque to 6Nm [4 lbf•ft].
3. Install pin (M28). Install pilot piston (M24).
4. Install bias spring (M26). Install gasket (M16).
5. Install cover (M14).
6. Using petroleum jelly to hold them in place, install O-rings (M30, M36, and M38).
7. Install valve housing.
8. Install screws (M18). Using a 4 mm internal hex wrench, torque to 7 Nm [5 lbf•ft].
9. Lubricate and install O-rings (M32A).
10. Install plugs (M32). Using a 1/4 internal hex, torque to 30 Nm [22 lbf•ft].
11. Lubricate and install new O-ring (M44A).
12. If used, install plug (M44). Using a 1/4 intarnal hex, torque to 30 Nm [22 lbf•ft].
13. Using petroleum jelly to hold them in place, install PCP O-rings.
14. Install PCP valve (M1). Install screws (M12).
15. Using a 5/32-inch internal hex, torque to 20 Nm [15 lbf•ft].
11009448 • Rev BA • July 2014
N22&N20
N87
N23A
Wrench size
1/8 inch internal hex
1 inch
3 mm internal hex
5 mm internal hex
1-1/16 inch
N14
Z001
Z002
N18
P101 956
Torque
7 Nm [4 lbf•ft]
40 Nm [30 lbf•ft]
6 Nm [4 lbf•ft]
16 Nm [12 lbf•ft]
N/A
41