ACCUMULATOR GP 2500393 - Caterpillar

Improper operation, lubrication, maintenance or repair of this product can be dangerous and could result in injury or death.Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information.
Before you perform any repairs or before you perform any maintenance, read all safety information. Understand all safety information before you perform any repairs or before you perform any maintenance.Machine Preparation
Before you service the suspension cylinders, the dump body must be empty. Verify that the body is clean and does not contain any carryback material.Ensure that the fuel tank is full of fuel.Position the machine on level ground. Coast the machine to a gentle stop without using the brakes. A sudden stop will alter the amount of exposed chrome. A sudden stop will also invalidate the information that is used to determine if the machine needs to be serviced.Visual Inspection
Perform a visual inspection on the suspension cylinder before you work on the suspension cylinder. Make sure that the machine is on level ground. Do the inspection on an empty machine while the engine is stopped.Check each suspension cylinder for oil leaks around the seals and around the valves.Check each suspension cylinder for nitrogen leakage. A nitrogen leak is difficult to detect. A solution that consists of soap and of water can be used to detect leaks.Check for leakage at the O-rings that are located under the manifold and under the pressure sensor. Check for leakage at the O-rings that are located under the protective plates that are on the head. These protective plates cover all or some of the head bolts to prevent removal of the head while there is pressure in the suspension cylinder.
Do not adjust, loosen, or remove the protective plates to inspect for leaks as it will release the pressure in the strut resulting in the truck to drop suddenly that could result in personal injury or death.
Note: Use a ladder or appropriate device to reach the appropriate height to inspect the charging valves.Note: Friction between the rod and the lower wear band may cause a dark stain to appear on the chrome of the suspension cylinder. This stain does not affect the wear life of the suspension cylinder. The chrome can be polished to remove the stain. Eventually, the wear band should become soaked by oil and grease and the blackening should decrease.Conditions for Servicing
Service for the suspension cylinder is recommended when any of the following conditions exist:
A fault code will be displayed on the Vital Information Management System (VIMS), if the suspension cylinder is fully collapsed.
Suspension cylinder shows signs of leakage.
The travel of the suspension cylinder rod is limited.
The weight of the truck changes more than 22241 N (5000 lb).
The ride is rough or the struts are at full extension when the truck is empty.
The suspension cylinder pressures vary 345 kPa (50 psi) (Front) or 1035 kPa (150 psi) (Rear) more in comparison to the other side when the truck