YOKE ASSEM. 8D3149 - Caterpillar

Drain The Oil
Operate the machine to warm the power train oil. The machine must be level. Lower the attachments with slight down pressure.See the Topic “Power Train Oil Filter - Replace” in this story for the procedure to change the filters.Use a 126-7538 Nozzle if the machine is equipped with the high-speed oil change arrangement. The high-speed oil change arrangement removes oil from the sump in the bevel gear case. The high-speed oil change arrangement does not remove oil from the torque converter or from the transmission case.
Illustration 1 g06252850
Remove the plug from the drain in the bevel gear case. Install a 4C-8563 Swivel into the valve. Clamp a hose to the swivel. A 25.4 mm (1 inch) pipe and hose can be used. Use a 25.4 mm (1 inch) pipe with 1-11 1/2 NPTF threads. Do not tighten the pipe.
Turn the swivel or pipe clockwise to open the internal drain valve. Allow the oil to drain into a suitable container.
Change the filter element. See the Topic “power train System Oil Filter-Replace” in this manual.
Remove the swivel or remove the pipe from the drain in the bevel gear case. The drain valve will close.
Clean the oil drain plug and install the oil drain plug.Power Train Oil Filter - Replace
Hot oil and components can cause personal injury.Do not allow hot oil or components to contact skin.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
If the indicator for the power train oil filter in the monitoring panel comes on before 1000 hours, the filter should be changed.The power train oil filter is located behind the front access cover on the right side of the cab.
Illustration 2 g06138751
Remove power train oil filter housing (1) from the power train oil filter base (2).
Remove the power train oil filter element and properly dispose of the filter element.
Clean the power train oil filter housing with a clean cloth.
Inspect the seal. If the seal is damaged, replace the seal.
Install the new filter element into the oil filter housing. Then, install power train oil filter housing (1) into base (2).Note: Lubricate the threads of the power train oil filter housing.Power Train Oil Screens - Clean
When you change the power train oil, clean the magnetic assembly and the screen.Magnetic Screen - Clean
Illustration 3 g06144238
Remove the bottom guard for access to the screen group.
Rotate non-metallic cover to remove the cover from non-metallic screen housing.
Remove the screen and the magnet assembly from the housing.
Wash the screen and the magnet assembly in a clean, nonflammable solvent.
Inspect the seal. If the seal is damaged, install a new seal.
Install the screen and the magnet assembly into the non-metallic screen housing.
Install