McLane Research Laboratories Mark 78H-21, User Manual

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Figure 6.2-19: Installing Variseal
®
Thin Side Down
One Variseal
®
edge is thinner than the other. To obtain the correct seal, the
Variseal
®
must be placed in the gear ring groove with the thin side down.
8. If also replacing bearings, continue to the next section: Step 3 – Clean and Replace
Ball Bearings.” Otherwise, continue to Step 4.
Complete the steps in this section to clean and replace ball bearings.
1. If not already done, the gear plate assembly should be removed from the top fixed
plate (see Figure 6-2.17).
2. Place the gear plate assembly with Variseals
®
facing up on a clean, flat surface and
remove the bottom fixed plate.
Thin side down