Usage:
Start By:
a. remove undercarriage frame assembly
Typical Example
Typical Example
1. Put an alignment mark on the swing gear and bearing and the undercarriage frame assembly for assembly purposes. Using tooling (B) and the appropriate size socket, remove forty bolts (2) and the spacers that hold swing gear and bearing (1) to the undercarriage frame assembly.
2. Fasten tool (A) and a hoist to the swing gear and bearing as shown. Bolts and spacers used to hold the upper structure to the undercarriage frame assembly can be used to install tool (A).
3. Remove the swing gear and bearing. The weight of the swing gear and bearing is approximately 672 kg (1480 lb).
Typical Example
4. Tape over the sealing surfaces of the dust seals, the inner race and the outer race. This will prevent cleaning solvent from entering the cross sections of the dust seals. Thoroughly clean the swing gear and bearing.
5. Remove dust seals (3) and (4) from the outer and inner races of the swing gear and bearing.
6. Clean the sealing grooves of the inner and outer races with fine grit sandpaper; then use a cleaning solvent to clean the seal grooves. Be sure the seal grooves are thoroughly clean and dry prior to installing new dust seals.
NOTE: The following steps are for the installation of the swing gear and bearing.
7. Lay a new dust seal (3) around the outer race to determine the required length. Cut the new seal approximately 1 cm (0.3937 in) shorter than the required length. Cut the seal at a 90° angle. Use a file to smoothen the cross section cut of the seal.
8. Install a new dust seal (3) in the outer race using 8T9021 Adhesive. Be sure to put adhesive on the 90° cross section cut in the seal. Install the seal with the lip facing as shown in Illustration C30014P1.
9. Install a new dust seal (4) in the inner race. Follow the same procedure as in Steps 7 and 8.
10. Lubricate the swing gear and bearing with grease.
Typical Example
11. Clean the mating surface for the swing gear and bearing on the undercarriage frame assembly. Put 1U8846 Gasket Maker on the mating surface. Fasten tool (A) and a hoist to swing gear and bearing (1), and put it in position on the undercarriage frame assembly. Be sure the stamp mark "S" on the inner race is positioned as shown, relative to the undercarriage frame assembly and the stopper on the outer face.
12. Put a thin coat of 2P2506 Thread Lubricant on the threads of bolts (2). Install the spacers and bolts (2) that hold the swing gear and bearing to the undercarriage frame assembly. Tighten the bolts to a torque of 785 ± 79 N·m (580 ± 60 lb ft). If desired, tooling (B) can be used to tighten the bolts.
13. Add approximately 26 kg (57 lb) of 5P0960 Multipurpose Grease after the swing gear and bearing has been installed.
End By:
a. install undercarriage frame assembly