CYLINDER & SEAL GP-BUCKET 4933131 - Caterpillar

Illustration 1 g02544516
Side view of the oil jet tube assembly
Table 1
Specification for the 280-2748 Oil Jet Tube As
Item Qty Part Specification Description
- - 280-2748 Oil Jet Tube As Diameter of the larger orifice (1) is 1.97 mm (0.078 inch).
Diameter of the smaller orifice (2) is 1.37 mm (0.054 inch).
Use compressed air in order to check the piston cooling jets for plugging.
Visually inspect the piston cooling jets for damage or distortion. If damage to a cooling jet is suspected, replace the piston cooling jet.
The proper operation of the piston cooling jet is essential to ensure correct cooling and lubrication of the piston. When the piston cooling jets are removed from engine, make sure that the piston cooling jets are handled properly to avoid any damage.