EXTENSION GP-CENTER FRAME 2155548 - Caterpillar

Care should be used when adding grease to equalizer bar end pin joints. Excessive grease pressure could cause the equalizer bar end pin seals to bulge outward and result in a premature seal failure.
Illustration 1 g03516016Equalizer bar end pins on both the left-hand and right-hand side of the machine are lubricated from a remote location. The equalizer bar end pin lubrication manifold is located in a compartment (1) on the left side of the machine.
Illustration 2 g03515821
Equalizer bar end pin lubrication manifold
(2) Equalizer bar end pin grease fitting
(3) Equalizer bar end pin grease fitting
Open the access door to the compartment (1) which houses the equalizer bar end pin lubrication manifold.
Use equalizer bar end pin grease fitting (2) to lubricate the end pin on one side of the equalizer bar.
Use equalizer bar end pin grease fitting (3) to lubricate the end pin on the other side of the equalizer bar. Note: Some resistance should be detected when grease is flowing to the equalizer bar end pin properly. If grease flows too easily, a problem such as a broken supply line may exist. If no grease can be applied, an obstruction is interfering with grease flow. If either of these situations exists, perform an investigation to determine the cause of improper grease flow.
When finished, close the left side access door. A visual confirmation of proper equalizer bar end pin lubrication can be made by examining the equalizer bar end pin relief valve.
Illustration 3 g02712021
Portion of left-hand track removed for visibility
Left-hand equalizer bar end pin guard
Remove the two retaining bolts and washers that secure the equalizer bar end pin guard. Lift the guard from position to reveal the equalizer bar end pin relief valve.Note: If necessary, clear dirt and debris from above the equalizer bar end pin guard before removal.
Illustration 4 g02703659
One of two vent holes in left-hand equalizer bar end pin relief valve
Clean any remaining debris from around the equalizer bar end pin relief valve after removal of the equalizer bar end pin guard. Grease will escape from the vent holes of the equalizer bar end pin relief valve once the chamber around the equalizer bar end pin is filled with grease.Note: Lubrication routes are separate for both the left-hand and right-hand side equalizer bar end pins. Each side must be checked separately to ensure that proper lubrication is occurring.Note: Excessive wear will occur to the equalizer bar end pin joint components if these components do not receive adequate lubrication.