Subaru Robin PKX201 - Manual (Page 78)

High Pressure Pumps - PKX Service
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14. Before trying to pull the rotating seal half (carbon
side) off the crankshaft, it might become necessary
to clean the crankshaft with an emery cloth. Apply
liquid detergent to the crankshaft as well as on the
seal. This will help prevent the sealing lip from
tearing when removed.
15. Using a pliers, carefully pull the rotating half
(carbon side) off the crankshaft. Squeezing to hard
will ruin the seal. A better way to remove the seals
would be this procedure: loosen the backplate bolts
(step 22), and pull the backplate forward. The
pulling force of the entire backplate will help re
move the seals without bending or distortion.
13. This is what the shims will look like if in good
condition.
16. After removing the rotating seal, inspect the
surfaces closely. No cracks, chips or uneven wear
should show. If pump was run without water, the
surface of the seals will have a worn and burnt
appearance.