Danfoss H1 078, Service Manual

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MDC Legend - single pumps
Wrench size and torque
Item Description Wrench size Torque
D065 O-ring plug 3/16 internal hex 12 N•m [9 lbf•ft]
D084 screen - -
D098 ring - -
D200 feedback pin 13 mm deep well socket 22.5-27.5 Nm [16.6-20.3 lbf•ft]
D250 cap screw 5 mm internal hex 13.3 Nm [9.8 lbf•ft]
D80 solenoid - -
D81 Oring - -
D750 neutral start switch - -
D751 Oring - -
D735 plug 3/4 inch 30 Nm [22 lbf•ft]
F00A servo orifice 3 mm internal hex 2.5 Nm [1.8 lbf•ft]
F00B servo orifice 3 mm internal hex 2.5 Nm [1.8 lbf•ft]
F00P supply orifice 3 mm internal hex 2.5 Nm [1.8 lbf•ft]
F00T tank orifice 3 mm internal hex 2.5 Nm [1.8 lbf•ft]
Inspection
Inspect the machined surfaces on the control and top of the pump. If you find any nicks or scratches,
replace the component.
Reassembly
Ensure you install dowel pins (D300) in the housing before installing the control.
1. Install a new gasket (D150).
2. Install dowel pins (D300) in the housing.
W
Warning
If the feedback pin comes off during operation, the pump will lose controllability causing a
potentially hazardous situation. Insure feedback pin is properly torqued before continuing with
reassembly.
3. If you removed screen (D084), install a new one. Install it with the mesh facing outward (see drawing).
Install retaining ring (D098).
MDC - Proper screen orientation
D084
D084
Incorrect screen
orientation
Correct screen
orientation
D098
Service Manual
H1 Pumps 069/078, 089/100, 115/130, 147/165, 210/250
Minor Repair
44 | © Danfoss | May 2018 520L0848 | AX00000087en-US0308