Ddp Shaft Seal Installation - Danfoss DDP096 Service Manual

Service Manual
Digital Displacement® Pump DDP096
Minor repair
© Danfoss | April 2022

DDP shaft seal installation

1. Orient the pump with the input shaft pointing upward.
2. Inspect the pump housing seal bore and the sealing area on the shaft for rust, wear, and
contamination.
3. Clean the shaft and the housing if necessary taking care not to damage the running surfaces.
4. Cover the shaft splines with a protective sleeve or packaging tape to prevent damage to the seal
during installation.
5. Inspect the new seal (E103).
The inner diameter is supplied pre-greased; do not wipe this grease away and maintain cleanliness
during the entire process.
6. Lubricate the outer diameter of the new shaft seal and the shaft surface with clean hydraulic fluid.
7. Insert the seal evenly and concentrically to the shaft such that the flat face is facing outwards.
Take care not to press on the dust lip on the inside or scratch the shaft surface to avoid binding and
damaging the seal.
8. Press by hand into housing until it bottoms out.
Seal may need to be pressed or tapped into place. If a tool is used, a ring with inner diameter of 49
mm ± 0.1 mm, outer diameter of 56.9 mm ± 0.1mm and rounded edges is recommended.
9. Using snap-ring pliers, install the circlip (E102) that retains the shaft seal.
10. Remove the installation sleeve on the shaft end.
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