Wrench size and torque
Item
Description
Wrench size
Torque
D065
O-ring plug
3/16 internal hex
12 N•m [9 lbf•ft]
D200
Feedback pin
13 mm deep well socket
22.5-27.5 N•m [16.6-20.3 lbf•ft]
D250
Cap screw
5 mm internal hex
13.3 N•m [9.8 lbf•ft]
D735
Plug
3/4 inch
30 N•m [22 lbf•ft]
F00A, F00B
Servo orifice
3 mm internal hex
2.5 N•m [1.8 lbf•ft]
F00P
Supply orifice
F00T
Tank orifice
1. Using a 5 mm internal hex wrench, remove the six cap screws (D250)
2. Remove the control module and gasket (D150) and discard the gasket.
3. If necessary, remove servo orifices (F00A, F00B), supply orifice (F00P), and tank orifices (F00T) using a
3 mm internal hex wrench.
Tag and number the orifices for reinstallation.
4. If screen (D084) is clogged, use a hook to remove retaining ring (D098) and screen.
5. Remove and discard screen (D084).
6. Before removing the control, note the position of the control lever for reassembly.
The functionality of the MDC control and the neutral position of the pump can be lost.
Do not disassemble the MDC control.
MDC Repair Legend, Wrench size and Torque
D084
Screen
D80
Solenoid
D81
O-ring
D098
Retaining ring
D750
Neutral start switch
D751
O-ring
Wrench size and torque
Item
Description
Wrench size
Torque
D065
O-ring plug
3/16 internal hex
12 N•m [9 lbf•ft]
D200
Feedback pin
13 mm deep well socket
22.5-27.5 N•m [16.6-20.3 lbf•ft]
D250
Cap screw
5 mm internal hex
13.3 N•m [9.8 lbf•ft]
D735
Plug
3/4 inch
30 N•m [22 lbf•ft]
F00A, F00B
Servo orifice
3 mm internal hex
2.5 N•m [1.8 lbf•ft]
F00P
Supply orifice
F00T
Tank orifice
MDC Control Assembly
Ensure you install dowel pins (D300) in housing before installing control.
The pump will lose control, causing a potentially hazardous situation.
If a feedback pin comes off during operation, ensure the feedback pin is properly torqued before
continuing with reassembly.
Service Manual
H1P 069—H1P 250 Axial Piston Single Pumps
Minor Repair
46 |
©
Danfoss | September 2020
AX152886482551en-000504