TM 10-4320-307-24
3-11
MECHANICAL SEAL AND BEARING ASSEMBLY REPAIR/REPLACE (CONT).
ASSEMBLY:
1.
Install mechanical seal (1).
2.
Install sight glass (2) into thrust bearing housing (3).
3.
Install ball bearing (4) and adjust ring (5). Make axial truing and final adjustment for adjustable ring (5). There
should be 0.429 inches (11 mm) machining allowance.
4.
Install stationary labyrinth seal (6).
5.
Install O-ring (7) and rotating labyrinth seal (8). Keep 0.039 inches (1 mm) clearance between rotating labyrinth
seal (8) (inside) and stationary labyrinth seal (6) (inside).
6.
Install and tighten set screws (9).
7.
Install labyrinth seal cover (10) on thrust bearing housing (3) and install six screws (11). Ensure 0.039 inches (1
mm) clearance is set between cover (10) and rotating labyrinth seal (8).
NOTE
Keep the same clearances between the outside rotating and stationary labyrinth seals in the guide
bearing housing.
8.
Assemble guide bearing housing in the same manner.
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