DISC 0813386 - Caterpillar

Introduction
This Special Instruction provides the necessary parts and information to install the bolt-on ball on the drawbar. The bolt-on ball eliminates the need for plastic inserts around the ball. Also, the bolt-on ball can be lubricated with a grease gun.Do not perform any procedure outlined in this publication, or order any parts until you read and understand the information contained within.Necessary Parts
Installation Procedure
1. Disconnect the drawbar from the bolster on the front of the machine. Use a suitable method to support the front of the drawbar and move the machine forward to provide better access to the front of the drawbar.2. Install the 6G-9727 Flange using the method given in the reference.
Illustration 1. Dimensions for Plate (1). 3. Fabricate Plate (1) from structural steel using the dimensions given in Illustration 1 and Chart 2.
Illustration 2. Dimensions for Plate (2). 4. Fabricate Plate (2) from structural steel using the dimensions given in Illustration 2 and Chart 3.5. Remove the original bolt (ball) from the mounting yoke.6. Use an air carbon arc torch, or similar tool, to cut the mounting yoke for the bolt (ball) from the drawbar.
Illustration 3. Dimensions for welding the fabricated Plates (1 and 2) and shaft assembly (3) to the drawbar. Dimension (X) must be obtained before welding Plates (1 and 2) and shaft assembly (3) to the drawbar.7. Check Dimension (X) on the drawbar. Remove material from the drawbar if necessary to obtain Dimension (X).8. Weld shaft assembly (3) and Plates (1 and 2) to the drawbar using the dimensions given in Illustration 3 and Chart 4.
Illustration 4. Location of the bolt-on ball and related parts.9. Install the bolt-on ball (6) and related parts using Illustration 4 and Chart 5. Use shims (9, 10 and 11) to obtain 0.0 - 0.5 mm (.00 - .02 in) endplay. Tighten bolts (4) to 440 20 N m 320 15 lb ft). Tighten bolts (7) to 520 20 N m (380 15 lb ft).