TRIM-BULK 5367221 - Caterpillar

Apply lubricant to the fittings with a hand operated grease gun only. Use of pressure operated lubricating equipment damages the seals.
The equalizer bar has two vent passages in the outside positions. The equalizer bar has one grease fitting in the center.
Illustration 1 g00104584
Remove the large plug in order to provide access to the grease fitting. Apply Caterpillar Gear Oil (GO). Apply the gear oil through the fitting until gear oil squirts out of one vent passage or out of both vent passages. Use a hand-operated grease gun to apply the grease.Note: If it is difficult to use the gear oil due to current maintenance practices, you can use Caterpillar Multipurpose Grease (MPGM). Because the gear oil has greater load carrying capacity and better lubricating characteristics, the gear oil is used at the factory. The combination of gear oil and MPGM is not harmful to the machine.