Ac Control Installation - Danfoss H1P 045 Service Manual

Service Manual
H1P 045/053/060/068 Axial Piston Single Pumps
Minor Repair
© Danfoss | June 2020

AC Control Installation

Inspect control, pump housing and plastic PC board housing, and its sealing areas.
C
Caution
Do not damage the plastic housing in the plug sealing area when installing the screws.
Inspect the machined surfaces on the control and top of the pump. If you find any nicks or scratches,
replace the component.
If pump has been rebuilt or a new control is being installed, control software must be recalibrated. Refer
to H1 Automotive Control User Manual for recalibration instructions.
1. If you removed screen (D084), install a new one with the mesh facing outward.
2. Install a new retaining ring (D098).
Be sure screen will not move axially in bore after retention ring is installed.
Proper screen orientation
3. If previously removed, install orifices using a 3 mm internal hex wrench and torque to 2.5 N•m [1.8
lbf•ft].
4. Install a new gasket (D150).
5. Install the control module and six cap screws (D250).
6. Using a 5 mm internal hex wrench, torque the cap screws (D250) to 13.3 N•m [9.8 lbf•ft].
Torque sequence
1
2
6 5
4
3
7. Connect wiring (D640).
8. Install new plastic plugs with O-rings (D610) using the special tool, press plugs in and turn 45 degrees
clockwise.
If control will continue to be under warranty, install new sealing wax of a different color (original wax
is blue). Pumps without sealing wax installed will not be warrantied.
9. Install protection bracket (D672).
10. Install screws (D674). Torque to 5 N•m [3.7 lbf•ft].
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