Repair; Removing Solenoid(S); T1/T2/T3/T4 Controls; Disassembly - Danfoss 51 Series Service Manual

Service Manual
T1, T2, T3, T4, TA, TH, TM, TN
TM/TN schematic
A
X4
X4
B
TM-E 7 (12V) TM-F 7 (12V)
TN-F 8 (24V)
TN-E 8 (24V)

Repair

Series 51 Two Position Controls Service Manual
L2 M4
max.
disp.
T3
T2
T7 T8
T1

Removing Solenoid(s)

T1/T2/T3/T4 controls

Solenoid(s) (M1) available as complete assembly only. Do not remove the solenoid(s) unless you intend to
replace them.
If replacing the solenoid(s) (M1), remove plastic nut, remove coil, and use a thin 3/4 inch wrench to
remove solenoid.

Disassembly

T1/T2/T3/T4/TA/TH/TM/TN controls

1. Using a 1/4 inch internal hex wrench, remove plugs (NT40). Remove and discard O-rings (NT40A).
2. Using a 1/4 inch internal hex wrench, remove plug (M16). Remove and discard O-ring (M16A).
TA controls have a steel plug and TH controls have a plastic plug at (M1).
3. If present, remove pin (N14). Remove shuttle spool (NT42).
4. Using a 1/8 inch internal hex, remove plug (M18). Discard O-ring (M18A).
5. Remove plug (N20). Remove and discard O-ring (N20A).
6. Using a 3 mm internal hex, remove plug (N26), if present.
7. Remove screws (M22) and spacers (M24), if present.
8. Remove the control housing (M10). Discard O-rings (G38, G42, G36) or gasket (G240).
9. Remove the 4-way valve assembly (F32). Discard O-rings (F324).
Read Series 51 and 51-1 Bent Axis Motors Service Manual 11008567 for minor repair instructions for
the 4-way valve, threshold spring, and ramp spring components, if repair is necessary.
10. Remove spring (J10*) and spring seats (J30, J20).
11009442 • Rev CA • January 2015
M3
N
M1
n
L1
M5(X3)
M2
P107 827E
25