Shaft Seal, Roller Bearing and Shaft Repair
The shaft assembly is serviceable without disassembling the pump. Orient the pump on the work surface
so the shaft is pointing to the side.
Shaft assembly
J150
J100
J200
J250
J260
J275
J300
J150
Protective
sleeve
1. Unwind the spiral ring (J300) from the housing to release the shaft/seal/bearing subassembly.
2. Pry on the lip of the seal carrier (J275) to dislodge it from the pump.
3. Remove the seal carrier. Remove and discard O-ring (J260).
4. Press the seal (J250) out of the carrier and discard.
5. Pull the shaft (J100) with bearing (J150) out of the pump.
If necessary, tap lightly on the shaft to dislodge it from the cylinder block.
C
Caution
Do not damage the housing bore, shaft or bearing when removing the shaft and shaft seal.
6. Remove the retaining ring (J200) using retaining ring pliers.
Press the bearing off the shaft.
7. Inspect the shaft journals for wear, scratching, and pits.
8. Check the splines for fretting; replace if damaged.
9. Rotate the bearing, if it does not rotate smoothly, replace it.
10. Press the bearing (J150) onto the shaft (J100) and replace the retaining ring (J200).
11. Ensure the retaining ring diameter is less than 38.84 mm [1.53 in] when installed on the shaft.
12. Install the shaft/bearing assembly into the pump.
13. Lubricate and install a new O-ring (J260) onto seal carrier (J275).
14. Press a new seal (J250) into the seal carrier.
Service Manual
H1P 045/053/060/068 Axial Piston Single Pumps
Minor Repair
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©
Danfoss | June 2020
AX152886481964en-000405