EXTENSION AS. 2029638 - Caterpillar

Illustration 1.
Location of fan drive group components. 1J-4034 Lip Seal (1). 113-8158 Shaft (2) (Part of the 9Y-9397 Bracket Assembly). 6Y-7652 Roller Bearing Cup (3). 6Y-7651 Roller Bearing Cone (4). 113-8159 Retainer (5). 7X-3325 Bolt (6). 2M-0849 Hardened Washer (7). 5F-3144 O-Ring Seal (8). 7E-2456 Spacer (9). 9Y-2647 Fan Pulley Hub (10). (W) = Air gap between the end of the shaft (2) and the retainer (5). The air gap is NOT to scale.
Illustration 2.
113-8158 Shaft (2). 9Y-9388 Bracket (11). Dimension (X). b. Measure the length of the 7E-2456 Spacer (9). This is dimension (Y). See Illustration 3. Dimension (Y) must be 76.21 0.05 mm (3.000 .002 in). Some minor wear or fretting is allowed on the ends of the spacer.
Illustration 3. 7E-2456 Spacer (9). Dimension (Y).c. Measure the thickness of the 113-8159 Retainer (5). This is Dimension (Z). See Illustration 4. Dimension (Z) must be 18.0 0.2 mm (.71 .01 in). Some minor wear or fretting is allowed on the faces of the retainer.
Illustration 4.
113-8159 Retainer (5). Dimension (Z).5. To improve bearing retention, 1/2inch bolts may be used to fasten the retaining washer to the shaft. Formerly, 3/8inch bolts were used. See the Reference Article for information about modifying the retaining washer and shaft. If this modification has already be done, check to be sure that the holes were correctly machined.6. Be sure that ONLY 2M-0849 Hardened Washers (7) are used between the 113-8159 Retainer (5) and the 7X-3325 Bolts (6).7. The bearings (3) and (4) should be packed with grease upon assembly. The grease must be compatible with the grease used by the customer.8. Tighten bolts (6) to a torque of: * 3/8inch bolts - 47 9 N m (35 7 lb ft)* 1/2inch bolts - 105 20 N m (77 15 lb ft)9. After the fan drive group is assembled, add grease at the nipple to fill all the cavities. Add grease until the grease just starts to flow out of the relief fitting.