LINES GP-HYDRAULIC 9EL2406 - Caterpillar

5. Remove steel crossmember (2) from the inside diameter of the tube assembly. Grind the inside diameter smooth to remove any weld material or weld particles.Frame Preparation
1. Position the roller frame on a smooth hard surface with a leveling screw (1) under the tube as shown. Adjust screw (1) until the tube is level. 2. Remove any dirt or foreign material from the inside of the bogie bores. Place a section of straight bar stock (2), 38 mm to 52 mm (1.5" to 2.0") in diameter, thought the bores as shown. 3. Use FT1572 Level (3) on bar stock (2) as shown, and adjust the leveling screw until both bubbles are in the center of the vials. 4. Install FT2321 Gauge (4) with a 5D1071 O-ring Seal as shown. Move FT1572 Level (3) from the bar stock in the major bogie bores to the top of gauge (4) without reversing it. Rotate gauge (4) on the roller frame until the bubble is in the center of the level. 5. Scratch a mark on both sides of the roller frame even with the lower machined surface on gauge (4) as shown. 6. Move gauge (4) forward on the roller frame tube approximately 200 mm (8.0"). Level the gauge again and scribe marks on both sides of the roller frame. 7. Use a center punch to make marks on the scribe lines on both sides. 8. Bend a 10 mm × 76 mm (0.4" × 3.0") section of thin, flat aluminum material to fit the contour of the counterbore in the roller frame as shown. Use the aluminum as a guide to make a mark 10 mm (0.4") from the bottom of the counterbore around the complete diameter of the counterbore. 9. Flame cut the tube even with the line all around the inside diameter of the counterbore. 10. Grind the surface and outside diameter of the roller frame smooth.Repair Procedure
1. Cut two section of angle iron 44 mm × 44 mm × 8 mm (1 3/4" × 1 3/4" × 5/16"), 406 mm (16") long.2. Cut two length of square tubing 64 mm × 64 mm × 6.4 mm (2 1/2" × 2 1/2" × 1/4"), 1000 mm (40") long. 3. Weld tubing (1) and angle iron (2) to the roller frame as shown in the photo above. 4. Secure the main bogie to the roller frame with an 8S9906 Ratchet Puller. 5. Place a protective cover around the chrome sleeve to prevent damage from weld spatter.6. Fabricate a platform approximately 460 mm (18") high, around the base of the roller frame to elevate the person doing the welding to a more convenient position. 7. A gap must be maintained between the counterbore of the roller frame and the new replacement tube assembly. The gap is important to prevent weld cracking due to shrinkage stresses. The size of the gap varies depending on the version of roller frame.Earlier D8L and D9N roller frames which use the 6T8029 Replacement Tube