6. Maintenance
20
Read the instructions carefully. The items refer to the parts list and service kits section.
Turn to (drawing 12): Inspect the Housing Bearings and Seals (29) and (31), replace any that are broken, cracked, or deeply
scored. Clean any deposits from the exterior of both pieces and check (29) fit in the Nozzle Housing Bearing Cups (30). While
they should turn freely, to avoid shortening the life of the Bevel Gears the (29) should be replaced if the thickness of the flange
is less than 0.115". The outside of the seal section of (31) should still have a bead, replace if glazed across the majority of the
seal face. Inspect the interior of (31) for loss of spring tension (indicated by excessive dry deposits of dirty or abrasive cleaning
solution on the spring), replace as required.
Turn to (drawing 14): Clean any deposits from (30) and examine for excessive wear. Light scoring is acceptable, but the Cups
should be replaced if they are grooved in the seal contact area. A good maintenance program will require replacing many
seals, therefore, it may be worthwhile to make or obtain press tools for pressing (30) out of (5). The press tools are available
from Alfa Laval Tank Equipment Inc. Before installing new (30), clean the housing bores and remove any burrs resulting from
(30) removal. Press them in so that their flanges are flush against (5).
Drawing 6, 14, 18
Tee Housing
Turn to (drawing 18): Inspect the Tee Housing (4) for damage to the keyway that engages the Ring Gear (19). If the Ring Gear
was difficult to remove, check to see if (4) is out-of-round (as the result of an external blow, such as dropping) where the Gear
seats.
Check the water outlets on the nose and the CIP holes of (4); they should be free of debris.
Inspect the Tee Housing Bevel Gear (17) for worn, damaged or sharp/pointed teeth.
Turn to (drawing 6): Inspect (19) for worn, damaged or sharp/pointed teeth, and for damage to the key that engages the slot in
(4).
Inspect the Tee Housing Bearings and Seals (29) and (31), replace any that are broken, cracked, or deeply scored. Clean any
deposits from the exterior of both pieces and check the fit of (29) in the Tee Housing Bearing Cups (30). While they should turn
freely, to avoid shortening the life of the Bevel Gears (29) should be replaced if the thickness of the flange is less than 0.115".
The outside of the seal section of (31) should still have a bead, replace if glazed across the majority of the seal face. Inspect
the interior of (31) for loss of spring tension (indicated by excessive dry deposits of dirty or abrasive cleaning solution on the
spring), replace as required.
Turn to (drawing 14): Clean any deposits from (30) and examine for excessive wear. Light scoring is acceptable, but the Cups
should be replaced if they are grooved in the seal contact area. A good maintenance program will require replacing many (30),
therefore, it may be worthwhile to make or obtain press tools for pressing (30) out of (4). The press tools are available from Alfa
Laval Tank Equipment Inc. Before installing new (30), clean the housing bores and remove any burrs resulting from (30)
removal. Lubricate the outside of the new (30) and press them in so that their flanges are flush against (4).
Drawing 33
Stem
Inspect the water outlets of the Stem (3); they should be free of debris.
Check the Clutch O-ring, (61), for deterioration (hardening or deformation) or damage and replace if necessary.
If the machine is pin drive, the Drive Pin, (59), should be securely in the (3).
