Minor Repair; Shaft Seal Replacement; Remove The Shaft Seal; Inspect The Components - Danfoss K Frame Series Service Manual

Service Manual
K and L Frame Variable Motors, Cartridge Mount

Minor repair

Shaft seal replacement

Loop flushing valve

© Danfoss | July 2017

Remove the shaft seal

1. Remove the snap ring (B002) retaining the shaft seal and support washer.
2. Remove the support washer (M004).
3. Carefully pry out the shaft seal (M003).
To avoid damaging the shaft during removal, install a large sheet metal screw into the chuck of a slide
hammer. Drive the screw into the seal surface and use the slide hammer to pull the seal.
4. Discard the seal.

Inspect the components

Inspect the new seal, the motor housing seal bore, and the sealing area on the shaft for rust, wear,
and contamination. Polish the shaft and clean the housing if necessary.
Replacing the shaft seal
B002
M004
dM003
p
b
i
P104 251

Install the new shaft seal

1. Cover the shaft splines with an installation sleeve to protect the shaft seal during installation.
2. Install a new shaft seal (M003) with the cupped side facing the motor. Press seal into housing until it
bottoms out. Press evenly to avoid binding and damaging the seal.
3. Install seal support washer (M004).
4. Install snap ring (B002).
5. Remove the installation sleeve.

Remove the loop flushing valve

1. Using a 11/16 in internal hex wrench remove plug (E020) and (E010).
2. Using a 1/4 in hex wrench remove plug (E042).
3. Remove O-rings (E020B, E042A, and E010B).
4. Using pliers, remove centering springs (E041, E020C, and E010C).
5. Remove spring retaining washers (E020D and E010D).
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