Shaft Seal Replacement
D1 pump uses a lip-type shaft seal. You can replace this seal without major disassembly of the unit.
Replacing the shaft seal requires removing the pump from the machine.
Removal
1. Using the appropriate snap-ring pliers, remove the retaining ring (F210) from the housing.
2. Remove the shaft seal and its carrier (F220) with appropriate tool (such as a flat-head screwdriver)
from the bore in the pump housing and discard.
3. Remove the O-ring (F230) and discard.
Installation
1. Inspect the pump housing and new seals for damage. Inspect the sealing area on the shaft for rust,
wear, or contamination. Polish the sealing area on the shaft if necessary.
2. Lubricate new O-ring (F230) with petroleum jelly and fit in the housing groove.
3. Lubricate the lip of the new shaft seal with clean hydraulic fluid. Place a protective sleeve over the
shaft end to prevent damage to the seal during installation.
4. Keeping the new seal and its carrier perpendicular to the shaft, press them into the housing just far
enough to clear the retaining ring groove. Install seal with the cupped side toward the shaft bearing.
Do not damage the seal during installation.
5. Using the appropriate snap ring pliers, install the seal retaining ring.
6. Remove the installation sleeve.
Service Manual
D1 High Power Open Circuit Pumps Size 65/130/145/193/260
Minor repairs
©
Danfoss | July 2019 L1527453 | AX00000292en-CN0201 | 45
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