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At operating temperature, the hydraulic tank is hot and under pressure. Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure. |
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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, PERJ1017, "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. |
- Park the machine on a hard, level surface. Engage the parking brake and chock the wheels. Turn the disconnect switch to the OFF position.
- Apply the foot brake valve several times in order to relieve the pressure in the brake system.
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Illustration 1 g00573657 - Remove pressure reducing valve (1).
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Illustration 2 g00573663 - Remove three O-rings (2).
- Clean all parts and inspect all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.
- Lubricate O-ring seals with an appropriate lubricant.
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Illustration 3 g00573663 - Install three O-rings (2).
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Illustration 4 g00573657 - Install pressure reducing valve (1).
- Check the fluid level in the brake and steering system tank. Refer to Operation and Maintenance Manual, SEBU7064, "Hoist, Steering, and Brake System Oil Level- Check" for the correct procedure.