Inspection; Assembly - Danfoss 51 Series Service Manual

Service Manual
Multifunction block
Series 51 Hydraulic Proportional Controls Service Manual
Legend
Item
N27
N26
N58
80cc, 110cc
N58
160cc, 250cc

Inspection

Clean and inspect components for damage or foreign material. Replace damaged parts.

Assembly

1. Lubricate and install new O-rings (N27A). Install plugs (N27) using a 1/8 inch internal hex wrench.
Torque to 7 N•m [4 lbf•ft].
2. Using petroleum jelly to retain them, install new interface O-rings (G36, G38, G42) or gasket (N240).
3. Position the multifunction block on the endcap. Install screws (N58). Torque screws as shown in the
table.
4. Lubricate and install the double-resolver spool (N30). The spool is symetrical, either end in first.
5. Lubricate and install new O-rings (N26A). Using a 1/4 inch internal hex wrench, install plugs (N26).
Torque to 37 N•m [28 lbf•ft].
11009446 • Rev BA • July 2014
Wrench size
1/8 inch internal hex
1/4 inch internal hex
8 mm internal hex
10 mm internal hex
Torque
7 Nm [4 lbf•ft]
37 Nm [28 lbf•ft]
78 Nm [58 lbf•ft]
110 Nm [81 lbf•ft]
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