Series 51 Hydraulic Proportional Controls HZ, HA ... - Sauer-Danfoss

Series 51 Hydraulic Proportional Controls
Service Manual
JA Control
Repair (continued) Assembly
1. Using a 3 mm internal hex, install orifices (T4, T6, U7). Torque to 3.7 Nm [2.7 lbf•ft].
C Caution!
Readjust the PCOR to its
proper setting
2. Lubricate and install O-rings (F324).
3. Install the 4-way valve assembly (F32).
40 11009446 • Rev AC • November 2010
4. Using petroleum jelly, lubricate and install a new O-rings (G38, G36 and G42) or
install gasket (N240).
5. Install the control assembly to the end cap.
6. Install screws (M150 and M151).
7. Torque screws (M150 and M151) to:
• 78 N•m [58 lbf•ft]. Use an 8mm internal hex wrench for 80 cc and 110cc motors.
• 110 N•m [81 lbf•ft]. Use a 10 mm internal hex for 160cc and 250ccmotors.
8. Install spool (M32).
10. Lubricate O-ring (M23A). Using a 3/8 internal hex wrench, install plug (M23). Torque
to 25 Nm [18 lbf•in].
11. Lubricate and install 13 O-rings (M24A). Using an 1/8 internal hex wrench, install 13
plugs M24). Torque to 6 Nm [4 lbf•in].
12. Lubricate and install O-rings (M84A). Using a 7/16 wrench, install plugs (M84). Torque
to 12 Nm [9 lbf•in].
13. Install the PCOR spool assembly (M20).
14. Install spring (M18). Install adjuster (Z*).
15. Lubricate and install O-ring (M16).
16. Install lock nut (M14). C Torque to 54 Nm [40 lbf•in].