CONTROL GP-JOYSTICK 2699388 - Caterpillar

Table 1
Approximate Weight of Lower Tool Bushing    
H180D S     71 kg (157 lb)    
Completely clean the inside of the bushing.
Illustration 1 g01386728
(1) Worn out area (2) Seal (3) Groove (wear indicator)
Inspect the inside bore of the bushing for wear.
Inspect wear pattern (1) in the tool bushing. If the wear does not extend past the single groove (3) , you can reuse the bushing.
Illustration 2 g01197406
In order to reuse the tool bushing, you can rotate the tool bushing by 90 degrees.
If the wear pattern (1) extends past the single groove (3) , replace the lower tool bushing.
Inspect the seal (2) in the tool bushing. Replace the seal in the tool bushing if the seal is worn or if the seal is damaged.
Illustration 3 g01200105
(4) Lower tool bushing (5) Area on the lower tool bushing for applying grease
If the lower tool bushing has been removed from the front head, you must perform the following steps before you install the lower tool bushing.
Apply grease to the entire surface (5) on the lower tool bushing (4) . Grease will prevent corrosion and seizures. The removal of the lower tool bushing will be made easier by applying grease.
Install the lower tool bushing.
Install the tool. Refer to Operation and Maintenance Manual, "Tool - Remove and Install" for information on the installation procedure.