Eco GA Series, Installation, Operation & Maintenance Manual, Page: 11 / 59

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c. When reassembling, fit new seal housing gasket (Item 31).
d. Inspect seal head as noted previously.
B. Single Internal Mechanical Seal (GH8, GA12, GA16)
Reference drawing SD-2613, SD-2775
1. Remove seat retainer bolts (Item 39A) and seat retainer (Item 36) with seat retainer
pin, drive end seal seat (Item 55) with seat ring and seat retainer O-ring (Item 37).
2. Visually inspect drive end seal seat (Item 55).
3. If replacement is required, carefully remove drive end seal seat (Item 55) by inserting
an "L" shaped tool between seal seat and seat retainer (Item 36) and exert a firm
pulling action.
4. Remove pipe plug (Item 62 or 63) on top of drive end of front housing (Item 1) and
rotate shaft to allow access to seal head (Item 60) set screws. Loosen screws
sufficiently to allow removal of seal head (Item 60) and withdraw over shaft. Inspect
seal head. Replace if necessary.
C. Single External Mechanical Seal (G2, G4, G6, G8)
1. Loosen set screws in seal head and slide seal head off shaft.
2. Loosen gland Jock nut (Item 35) and unscrew gland nut (Item 36).
3. Pull out seal seat (Item 55) with seat O-ring.
4. Inspect seal seat and seal head as noted previously.
D. Double Mechanical Seal (G2, G4, G6, G8)
Reference Drawings SD-2537, SD-2538
1. Loosen gland lock nut (Item 35) and unscrew gland nut (Item 36).
2. Pull out drive end seal seat (Item 55) with seat O-ring. Inspect as noted previously.
3. Remove flush connection so as to give access to seal head set screws. Rotate shaft
to allow access to seal head set screws and loosen set screws to allow removal of
seal head (Item 60). With G6 pumps, seal housing must be unscrewed to allow
access to set screws. (See Step 5).
4. Remove seal head (Item 60) and inspect as noted above.
5. Loosen seal housing lock nut (Item 32) and unscrew seal housing (Item 30).
6. Pull out pump end seal seat (Item 56) with seat O-ring. Inspect as noted previously.
E. Double Mechanical Seal (GH8, GA12, GA16)
Reference Drawing SD-2613, SD-2775
1. Remove seat retainer bolts (Item 39A) and seat retainer (Item 36) with seat retainer
pin holding the drive end seal seat with seat ring and seat retainer O-ring.
2. Visually inspect drive end seal seat.
3. If replacement is required, carefully remove drive end seal seat by inserting an "L"
shaped tool between seal seat and seat retainer (Item 36) and exert a firm pulling
action.
4. Remove pipe plug (Item 62 or 63) on top of drive end of front housing (Item 1) and
rotate shaft to allow access to seal head and withdraw over drive shaft (Item 4).
Inspect seal head. Replace if necessary.
5. Visually inspect pump end seal seat.
6. If replacement is required, it will be necessary to remove front housing (Item 1) from
the pump. Disconnect any piping from front housing to allow disassembly.
7. Unbolt front housing (Item 1) from enter housing (Item 2) and carefully slide the front
housing over drive shaft (Item 4).
8. To replace pump end seal seat carefully remove by inserting an "L" shaped tool
between seal seat and front housing and exert a firm pulling action.