Subaru Robin PKX201 - Manual (Page 9)

PTG109 Service
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17. Check the condition of the volute seal for cracks, worn
spots, and overall condition. Replace with new if
necessary.
18. Check the condition of the volute. If cracked chipped or
bent, it must be replaced.
19. When reinstalling the back plate to the engine make
sure the weep hole faces downward. Weep hole must
be free from debris.
20. When replacing with a new seal, silicone compound
is not needed. However, if original seal is removed and
replaced back into pump back plate, then a small
amount of silicone sealant will help seal it. Place a thin
bead of sealant around the metal part of the seal.