Inspection; Pcor Assembly - Danfoss 51 Series Service Manual

Service Manual
EP, EQ, ER, ES Controls
40
Series 51 Electrohydraulic Proportional Controls Service Manual
Install Multifunction Block
N27
Legend
Item
N58
80cc, 110cc
N58
160cc, 250cc
Item
N27
N26
T4, T5, T6

Inspection

PCOR Assembly

1. Using petroleum jelly to retain them, install new interface O-rings (N24P and N82) to the PCOR valve
housing.
2. Install the PCOR valve housing (N87).
3. Install screws (N29). Using a 5 mm internal hex wrench torque to 9 Nm [7 lbf•ft].
4. Install the PCOR valve spool (N22, and N20) to the cavity in the PCOR valve housing.
5. Install the PCOR spring (N18).
6. Install a new O-ring(N16J). Install the PCOR adjustment screw (Z).
7. Install the PCOR valve locknut (N14). Torque locknut after adjusment.
8. Before returning to normal operation, reset the PC threshold setting. See
on page 14.
9. Install new O-ring (N23A).
10. Install plug (N23). Using a 1 inch wrench torque to 40 N•m [30 lbf•ft].
11. Lubricate and install O-rings (N27A).
12. Install plugs (N27). Using a 1/8 internal hex, torque to 6 Nm [4 lbf•ft].
11009448 • Rev BA • July 2014
N26A
N58
Wrench size
8 mm internal hex
10 mm internal hex
Wrench size
1/8 inch internal hex
1/4 inch internal hex
3 mm internal hex
N240
P107 830
Torque
78 Nm [58 lbf•ft]
110 Nm [81 lbf•ft]
Torque
7 Nm [4 lbf•ft]
37 Nm [28 lbf•ft]
6 Nm [4 lbf•ft]
Adjusting the PCOR Setting