HEAD GP-PUMP 1949839 - Caterpillar

Mark the location of differential bevel gear (12) on the differential.
Attach a suitable lifting device to the differential. Remove locknuts (13) and hard washers (14). Use Tooling (F) in order to separate the differential from differential bevel gear (12).
Illustration 9 g00647606
Position the differential on suitable blocks, as shown.
Position a suitable lifting device on the differential, as shown. Remove nuts (16) and the hard washers. Remove differential housing assembly (15) from differential housing assembly (17). The weight of differential housing (15) is approximately 50 kg (110 lb).
Illustration 10 g00647607
Remove thrust washer (18) from differential bevel gear (19). Remove differential bevel gear (19).
Use two people to remove differential pinion (20) and differential spider (21) as an assembly. The weight of the differential pinion (20) and differential spider (21) is approximately 41 kg (90 lb).
Remove differential pinions (20) from differential spider (21).
Illustration 11 g03159216
Secure Tooling (D) with a suitable vise.
Position differential pinion (20) on Tooling (D). Align notch of the retainer with the pin on Tooling (D).
Illustration 12 g03159337
Install the nut of Tooling (D).
Bend the tab of nut lock (22) so that nut lock (22) does not engage nut (23).
Use Tooling (E) to loosen nut (23). Remove nut (23) and nut lock (22).
Illustration 13 g03159356
Remove bearing cone (24) and differential pinion (20) from the retainer.
Illustration 14 g03159377
Remove bearing cups (25) from differential pinion (20).
Illustration 15 g03159378
Remove spacer (27) and bearing cone (28) from retainer (26).
Remove the nut from Tooling (D). Remove retainer (26) from Tooling (D).
Repeat Steps 16 through 27 for the three remaining differential pinions.
Illustration 16 g03159379
Remove differential bevel gear (29) and thrust washer (30) from differential housing assembly (17).
Illustration 17 g03149702
Position differential carrier assembly (32) on Tooling (A). The weight of differential carrier assembly (32) is approximately 272 kg (600 lb).
Remove bolts (33) and the washers that hold bearing cage (34). Use Tooling (G) in order to remove bearing cage (34).
Use two people to remove bearing cage (34) from differential carrier assembly (32). The weight of bearing cage (34) is approximately 27 kg (60 lb).
Illustration 18 g03159380
Remove seal assembly (35), bearing cup (36), and O-ring seal (37) from bearing cage (34).
Illustration 19 g03159396
Remove shims (38) from the differential carrier assembly.
Use two people to remove bevel pinion assembly (39) from the differential carrier assembly. The weight of pinion assembly (39) is approximately 45 kg (100 lb).
Illustration 20 g03159397
Remove bearing cones (40) and (41) from pinion assembly (39).
Illustration 21 g03159398
Remove bearing cup (42) from the differential carrier assembly.