Install the reduction gear assembly
1. Install the excavator pinion assembly. Place the frame on a workbench, as shown in Figure 6-89. Lift the pinion assembly and slowly place it in the frame until it is in place. When operating this step, the excavator repair shop prompts: pay attention to the vertical installation of the outer race of the bearing along the inner race of the frame. If there is enough clearance between the bearing and the frame, the outer race of the bearing can be easily installed in the frame; if not, check whether the outer race of the bearing is accurately placed in place, or whether the frame is damaged, if Pressing forcefully may damage the parts.
2. Install the retainer 1) Apply grease to 1/3 of the groove surface of the edge contacting the oil seal sleeve.
2) As shown in Figure 6-90, install the oil seal and the retainer together, pay attention to the installation direction, and use the oil seal installation clamp to install it in place.
3) Apply sealant (Loctite Adhesive 15) on the mating surface of the holder and the frame with the oil seal, and then install it with the sleeve.
Please be careful not to touch the pinion teeth during installation to prevent scratching the oil seal.
4) Tighten the bolts.
3. Turn the frame over and place the pinion shaft on a stable workbench with the spline facing upward.
4. Install the wheel carrier assembly as shown in Figure 6-91, and install the 2 wheel carrier assembly into the spline shaft of the pinion shaft
5. Install the central gear as shown in Figure 6-92, install the #2 central gear with the splines facing upwards.
6. Install the gear ring as shown in Figure 6-93. Apply a thin layer of sealant (Loctite glue #书15) to the mating surface of the frame and the gear ring and install it. Install the assembly mark given.
7. Install #wheel carrier assembly 1) Engage #1 wheel carrier assembly with ring gear and place it in place.
2) As shown in Figure 6-94, mesh #1 central gear and # pinion gear and install them in place.
8. Install the drain hose and plug
9. Add lubricating oil
Add 15.3L gear oil SAE90.
10. Install the rotating motor assembly. Install the eye bolts (M12×1.75) on the drilling holes of the rotating motor, and insert the steel cable into it. Apply sealant (Loctite #515) on the mating surface of the gear ring, as shown in Figure 6-95, insert the spline joint of the rotating motor and mark the assembly. Apply screw locking agent on the bolts and tighten them.
