VALVE GP-RELIEF 1088830 - Caterpillar

Start By:
Remove the tilt cylinder. Refer to Disassembly and Assembly, "Tilt Cylinder - Remove".
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 attachments have been lowered, 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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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.
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Use Tooling (A) in order to remove the rod bearing.
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Use Tooling (B) in order to remove the cylinder bearing.
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Position the cylinder assembly on Tooling (C) , as shown.
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Typical Example
Loosen head (1) with Tool (D) .
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Slide the cylinder rod from the cylinder body, as shown.
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Use Tooling (E) in order to remove the bolt from piston (2) . Remove piston (2) .
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Remove seals (3) from the piston.
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Move the cylinder body on rod assembly. Screw the head in the body. Do not tighten the head.
Pull the rod assembly out of the cylinder body.
Remove the head assembly from the cylinder body.
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Remove seal (4) and ring (5) from the head.
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Remove seal (9) , seal (8) , seal (7) and ring (6) from the head.