Filter Bypass Valve and Switch Repair
P106 138E
3 mm
1.5 N•m
[1 lbf•ft]
T025
6 mm
T200
T300
T020
T030
T040
16-20 N•m
[12 - 15 lbf•ft]
T025
6 mm
T040
16-20 N•m
[12 - 15 lbf•ft]
T010
T250
T350
6mm
32 N•m
[24 lbf•ft]
1. Remove three screws (T250) using a 6mm internal hex wrench.
2. Remove the filter adapter (T010) and gasket (T350). Discard the gasket.
3. Remove plugs (T025) using an 8 mm internal hex wrench.
4. Remove and discard O-rings (T040).
5. Remove spring (T030), and poppet (T020).
6. If necessary, remove cap screws (T300) and bypass switch (T200) using a 3 mm internal hex wrench.
It is not necessary to remove bypass switch (T200) unless it is being replaced.
7. Inspect poppet (T020) for bending or damage, and replace if necessary.
8. Inspect spring (T030) for cracks or warpage, and replace if necessary.
9. Inspect sealing surface of filter adapter (T010) for scratches or damage; resurface or replace scratched
or damaged part.
10. Lubricate and replace O-ring (T040) on plug (T025).
11. Install poppet (T020), spring (T030), and plug (T025). Torque to 18 N•m [13 lbf•ft].
12. If replacing bypass switch, install and torque 3 mm cap screws (T300) to 1.4 N•m [1 lbf•ft].
13. Install adapter assembly (T010) using new gasket (T350) to pump.
14. Install cap screws (T250) using a 6 mm internal hex wrench. Torque to 32 N•m [24 lbf•ft].
Charge Pump Repair (Removable Auxiliary Pad)
If an auxiliary pump is attached, remove auxiliary pump and coupling before servicing charge pump.
Position pump with front shaft pointing downward. Attach securely to a proper work stand.
Service Manual
H1P 069—H1P 250 Axial Piston Single Pumps
Minor Repair
©
Danfoss | September 2020
AX152886482551en-000504 | 55
