Inspection; Multifunction Block Assembly - Danfoss 51 Series Service Manual

Service Manual
EP, EQ, ER, ES Controls
Series 51 Electrohydraulic Proportional Controls Service Manual
Control Orifices
T3
T1
(optional)
U5
T2
T7
T8
T4
U6

Inspection

1. Inspect the multifunction block, shuttle spool, PCOR spool, and PCOR valve housing for damage or
foreign material.
2. Clean all internal passages thoroughly. Replace worn or damaged components as necessary.

Multifunction Block Assembly

1. Lubricate and install new O-rings (N27A).
2. Install plugs (N27). Using a 1/8-inch internal hex wrench torque to 6 N•m [4 lbf•ft].
3. Using petroleum jelly to retain them, install new interface O-rings (G36, G38, and G42), or install
gasket (N240).
4. Position multifunction block on endcap.
5. Install screws (N58). Refer to table for wrench size and torques.
6. Lubricate and install shuttle spool (N30).
7. Lubricate and Install new O-rings (N26A).
8. Install plugs (N26). Using a 1/4-inch internal hex wrench torque to 37 N•m [28 lbf•ft].
11009448 • Rev BA • July 2014
N27
T5
N27
T6
U7
P101 958
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