Shaft, Seal and Bearing Installation
1. Inspect the shaft journals for wear, scratching, and pits.
2. Check the splines for fretting; replace if damaged.
3. Rotate the bearing, if it does not rotate smoothly, replace it.
4. Press the bearing (J150) onto the shaft (J100) and replace the retaining ring (J200).
5. Ensure the retaining ring diameter is less than 38.84 mm [1.53 in] when installed on the shaft.
6. Install the shaft/bearing assembly into the pump.
7. Lubricate and install a new O-ring (J260) onto seal carrier (J275).
8. Press a new seal (J250) into the seal carrier.
Press the seal until it is flush 0.12 mm [0.005 in] or -0.72 mm [0.003 in] of the inside lip of the
carrier:
Positioning seal in seal carrier
P106 498E
Seal
Press flush to this surface
+0.12 mm [ 0.005 in] / -0.72 mm [ 0.028 in]
9. Cover the shaft with a protective sleeve while installing the seal carrier.
10. Hand press the seal carrier into the housing.
11. Ensure the seal carrier clears the retaining ring groove in the housing.
12. Remove the protective sleeve.
13. Install the retaining ring (J300).
14. Ensure the inside diameter of the retaining ring is greater then 68 mm [2.68 in] after installation.
Service Manual
H1T 045/053, 060/068 Axial Piston Tandem Pumps
Minor repair
©
Danfoss | September 2020
AX152886481761en-000405 | 65