COUPLING AS 5263588 - Caterpillar

Illustration 1 g00851495
There is a drum drive planetary that is located on the left side of the front drum and on the right side of the rear drum.Allow the planetary to cool completely before you remove the plug.
Illustration 2 g00851497
Move the machine until the welded bar (1) on the drum is at the six o'clock position.
Illustration 3 g00851498
Remove the level check plug (2) that is accessible through the hole in the yoke.
Obtain an oil sample from the hole for the level check plug.Refer to the Operation and Maintenance Manual, "Sampling Interval and Location of Sampling Valve" for further information.
Use a sampling gun to obtain the oil sample.
Replace the oil that was removed for the sample.
Clean the level check plug and then install the level check plug.
Repeat the procedure for the opposite drum drive planetary.