VALVE GP-RELIEF 1322051 - Caterpillar

Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Put identification on all lines, hoses, wires, and tubes for installation purposes. Install a cap or a plug on all lines, hoses, and tubes in order to prevent foreign materials from entering the system.Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Lower the implements to the ground. Relieve the pressure in the hydraulic oil tank by removing the filler cap. Move the bulldozer control levers to all positions in order to relieve any pressure that may be left in the system.
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Remove the bolts and guard (1) from the tilt cylinder.
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Disconnect hose assemblies (3) from tilt cylinder (2) .
Attach a lifting device to tilt cylinder (2) .
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Remove the cotter pin and pin (4) from pin (5). Remove pin (5) from the cylinder.
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Remove the nuts, bolts (6), cap (7), and the shims from the end of the rod assembly.
Remove tilt cylinder (2). The weight of the tilt cylinder is 61 kg (135 lb).Removal of VPAT Bulldozer Tilt Cylinder
Illustration 5 g00728774
Lower the implements to the ground. Relieve the pressure in the hydraulic oil tank by removing the filler cap. Move the bulldozer control levers to all positions in order to relieve any pressure that may be left in the system.
Remove bolts (1) and guard assembly (2) .
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Remove two hydraulic hose assemblies (3) from the tilt cylinder.
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Remove the bolts and retainers (4) and (5) .Note: Remove the shim pack that is located under retainer (4) .
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Attach a lifting sling to the tilt cylinder.
Install a 9U-5986 Eyebolt (6) to the upper pin and remove the pin.
Remove hose bracket (7) .
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Remove pin (8). Remove the tilt cylinder. The weight of the tilt cylinder is 51 kg (112 lb).