CAP-NON-THREADED 9U7178 - Caterpillar

Illustration 40 g02382518
Balance hole positions for 9P-3663 Planetary Carrier.
(Z) 17.3 mm (0.68 inch) MIN.
Illustration 41 g02382520
Balance hole positions for 8M-8677 Rear Carrier,
9P-8451 Planetary Carrier,
7S-8580 Planetary Carrier,
5S-7023 Planetary Carrier,
9P-9223 Planetary Carrier,
1M-4153 Planetary Carrier, and
3P-8165 Planetary Carrier.
Refer to Table 8 for dimensions (M), (N), (P), and (R) in Illustration 39 through Illustration 41.
Remove the putty from the carrier. Weigh the putty to determine the amount of material to be removed. From the putty, locate the opposite side of the carrier and drill a balance hole. Refer to Table 8 and Illustration 39 through Illustration 41 for tolerances and balance hole locations.
Table 8
Locations for the Balance Hole
Part Number Balance Specification (L)(1) Radius (M) Drill Size (N) Depth (P) Depth (R)
1M-4153(2) 7.2 (10.0) 174.8 mm (6.88 inch) 15.5 mm (0.61 inch) (3) N/A
8M-8677 7.2 (10.0) 111.3 mm (4.38 inch) 15.5 mm (0.61 inch) 60.5 mm (2.38 inch) 15.7 mm (0.62 inch)
5M-7875 7.2 (10.0) 93.7 mm (3.69 inch) 15.5 mm (0.61 inch) 69.9 mm (2.75 inch) 15.7 mm (0.62 inch)
9P-3663 7.2 (10.0) 170.0 mm (6.69 inch) 15.5 mm (0.61 inch) 51.0 mm (2.01 inch) (3)
8S-9070 3.6 (5.0) 109.2 mm (4.30 inch) 15.5 mm (0.61 inch) 132.1 mm (5.20 inch) 12.7 mm (0.50 inch)
9P-8451 2.2 (3.0) 89.0 mm (3.50 inch) 12.5 mm (0.49 inch) 38.0 mm (1.50 inch) (3)
7S-8580 2.2 (3.0) 114.3 mm (4.50 inch) 15.5 mm (0.61 inch) 9.7 mm (0.38 inch) 9.7 mm (0.38 inch)
5S-7023(4) 2.2 (3.0) 86.0 mm (3.39 inch) 12.5 mm (0.49 inch) 38.1 mm (1.50 inch) (3)
9P-9223(5) 2.1 (3.0) 155.0 mm (6.10 inch) 15.5 mm (0.61 inch) 90.0 mm (3.54 inch) (3)
(1) The carrier must be balanced within the specifications (L) which are given in (oz/in).
(2) Drill balance holes in the face opposite the spline. Holes must not be closer than 3.0 mm (0.12 inch) to the edge. Do not drill on thrust pads. Do not drill on the edges of the posts that are between the decks.
(3) This is a through drilled hole.
(4) 38.1 mm (1.50 inch) maximum depth is for the rib with cross-drilled oil hole. The maximum depth that is permitted in the other two ribs is 100 mm (3.9 inch).
(5) The distance between balance holes must be at least 19.0 mm (0.75 inch).
Once the balance holes are drilled, repeat Step 4 to make sure that the carrier is balanced according to specification (L) which is shown in Table 8.
Remove any sharp edges and clean any filings from the carrier.