SEAL-LIP TYPE 5P3989 - Caterpillar

c. Mount the magnetic base of Tooling (B) on Face A of case cover (2).d. Zero the dial indicator on Face B, as shown. e. Carefully remove Tooling (B) from the case cover.f. Mount the magnetic base of Tooling (B) on Face C of the differential case housing. Touch the dial indicator on the disc pack Face D.g. Record the indicator reading.h. Record two additional indicator readings from different areas of Face D.i. Average the three indicator readings. This is the measured end play gap.j. If the end play gap in Step 4i was greater than 0.81 mm (.032 in), replacement of the existing disc packs is necessary. 5. Remove the disc pack from the case housing. The disc pack consists of two friction discs (5) and two plates (6). 6. Remove actuator housing (7) and gear (8) from the case housing, as shown. 7. Remove pinion shaft (10) and two pinion gears (9).8. Remove the remaining pinion shaft