BOLT 4416455 - Caterpillar

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
After a failure in the brake circuit, clean the screens for the brake oil coolers. There are three screens that need to be cleaned. There is one screen for the front brake oil cooler and there are two screens for the rear brake oil cooler.
Park the machine on a level surface. Engage the parking brake and stop the engine.
Illustration 1 g06034395
The rear brake oil cooler screens are on the right side behind the rear brake oil cooler and in front of the hydraulic tank.
(2) Rear brake oil coolers
(3) Oil cooler for the steering/fan drive
(4) Hydraulic tank
Ensure that no oil is present in hydraulic tank (4).
Illustration 2 g01176679
Screen locations
Back side view of the housing for the rear brake oil cooler screens.
Remove covers (1) for the rear brake oil cooler screens. One cover is at the front of the screen housing and one cover is at the rear of the screen housing.
Remove the rear oil cooler screens. Wash the oil cooler screens in a clean, nonflammable solvent.
Install the rear oil cooler screens.
Install the covers for the rear brake oil cooler screens.
Illustration 3 g01159904
The front brake oil cooler screen is located inside the left frame rail between the fuel tank and the torque converter.
The tire and the rim for the front left side have been removed for ease of viewing.
Drain the oil from the front brake oil cooler screen with drain (6).
Remove cover (5) for the front oil cooler screen.
Remove the front oil cooler screen. Wash the oil cooler screen in a clean, nonflammable solvent.
Install the front oil cooler screen.
Install the cover for the front brake oil cooler screen.
Start the engine and operate the engine at low idle. Make sure that the parking brake is engaged. Check for leaks and make any necessary repairs.
Check the oil level in the hoist/brake tank. If necessary, add oil. For the proper procedure, refer to Operation and Maintenance Manual, "Hoist and Brake Tank Oil Level - Check".