Charge Pump Repair (integrated auxiliary pad)
P106 353E
S150
S300
S250
S100
S300
S200
K200
K500
K550
K250
K450
6 mm
10 Nm [7 ft•lb]
1. Remove auxilliary pump and O-ring (K250), and discard O-ring.
2. Remove charge pump cover screws (K450) and charge pump cover (K550).
3. Remove thrust washer (K500).
Note the orientation of thrust washer. Coated side is towards charge pump coupling (K200).
4. Remove pressure-balance plate (S200) with seal (S300). Discard seal (S300).
Note orientation of valve plate and seal.
5. Remove charge pump coupling K200).
6. Remove charge pump gear set (S100) and outer ring (S150).
7. Remove valve plate (S250) with seal (S300). Discard seal (S300).
Note the orientation of valve plate and seal.
8. Inspect carefully the valve and pressure balance plates for wear, scratches or pits.
Scratches on these components will cause a loss of charge pressure.
If any component shows signs of wear, scratching, or pitting, replace it.
Charge Pump Reassembly
1. Install new seals (S300) in the valve (S250) and pressure balance (S200) plates.
2. Install valve plate (S250) in the same orientation as removed.
3. Lubricate and install charge pump gearset (S100) and outer ring (S150).
4. Install charge pump coupling (K200).
5. Install pressure-balance plate (S200) in the same orientation as removed.
Service Manual
H1P 069—H1P 250 Axial Piston Single Pumps
Minor Repair
©
Danfoss | September 2020
AX152886482551en-000504 | 57
