LINES GP-LIFT & TILT CYLINDER 3966938 - Caterpillar

Inspect the Hoses and the Clamps
The nonmetallic hoses and the clamps must be inspected periodically in order to ensure safe operation and continuous operation of the engine fuel system. Take proper safety precautions before inspecting or replacing hoses and clamps.Note: Always use a board or cardboard when the engine components are checked for leaks. Leaking fluid that is under pressure can cause serious injury or possible death, including leaks that are the size of a pin hole. Refer to Operation and Maintenance Manual, "General Hazard Information" for more information.Nonmetallic Fuel Lines
Illustration 1 g02141367
(1) Rear low-pressure fuel lines
(2) Front low-pressure fuel lines Inspect hoses (1) and (2) of the engine fuel system for leaks that are caused by the following conditions.Replace any non-metallic fuel line (hose) which exhibits any of the following conditions.
Hoses which are cracked
Hoses which are soft
Outer covering that is chafed or cut
Outer covering that is ballooning locally
Flexible part of the hose that is kinked or crushed
Hoses which exhibit signs of leakage which are not the result of loose couplings or clampsFailure to replace a non-metallic fuel line (hose) which exhibits any of the above conditions may result in a hazardous situation.Inspect all clamps for the following conditions. Replace any clamp which exhibits signs of any of the following conditions.
Cracking
Looseness
DamageInspect all couplings for leaks. Replace any coupling which exhibits signs of leaks.Each installation application can be different. The differences depend on the following factors:
Type of hose
Type of fitting material
Anticipated expansion and contraction of the hose
Anticipated expansion and contraction of the fittingsDue to extreme temperature changes, the hose will heat set. Heat setting causes hose clamps to loosen. The loose clamp can result in leaks. A constant torque hose clamp will help to prevent loose hose clamps.Replace hoses that are cracked or soft. Replace hoses that show signs of leakage. Replace hoses that show signs of damage. Replace hose clamps that are cracked or damaged. Tighten or replace hose clamps which are loose.Replace the Hoses and the Clamps
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" or refer to Special Publication, PECJ0003, "Caterpillar Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Nonmetallic Fuel Lines
Personal injury can result from removing hoses or fittings in a pressure system.Failure to relieve pressure can cause personal injury.Do not disconnect or remove hoses or fittings until all pressure in the system has been relieved.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system components.
Replace the non-metallic fuel lines in a set.
Stop the engine and turn off the fuel supply.
Turn the battery disconnect switch to