LOOM-ENGINE 2036800 - Caterpillar

Repair of the upper 8R05522 Cab Group1.Weld repair any broken pieces on the 4E-6400 Cab Assembly using the rear wall as a fixture.2.To make sure that there is correct load distribution, weld a 50 mm x 50 mm (2.0 x 2.0 in) gusset to the 4E-6400 Cab Assembly, next to the repair weld.Eliminate the loose joint near the door, between the door and the cab upper/lower assemblies. This can be done by drilling in-line holes through both the 4E-6400 Cab Assembly and the 4E-7705 Platform Assembly. The holes should be near the weld nut (see Illustration 5).Install a 100 mm (4.0 in) long through bolt, M10 X 1.5 - 6H THD, to obtain greater bolt stretch and improved bolt retention. The bolt should be torqued to 55 10 N m (40.5 7.4 lb ft). Assemble again the cab upper to the cab lower assembly with the bolts provided. Make sure that the dowel pins align, and that the remaining 12 of 18 bolts are inserted and torqued to 55 10 N m (40.5 7.4 lb ft).
Illustration 1. (1) 4E-6400 Cab Assembly, part of the 8R-5522 Cab Group.
Illustration 2. (2) 4E-7705 Platform Assembly, part of the 8R-5534 Platform Group.
Illustration 3. (A) Removal of a "C" section from the 4E-6142 Angle Assembly.
Illustration 4. Dimensions for fabrication of steel bar.
Illustration 5. (B) Fabricated bar. (C) Weld specifications for the fabricated bar. To weld the fabricated bar, use a penetration of 2 mm (.08 in), a thickness/height of the weld of 25 mm (1.0 in), and a distance between centers of weld on each side of 100 mm (3.9 in). COPYRIGHT 1996 CATERPILLAR ALL RIGHTS RESERVED