KIT-CYLINDER HEAD GASKET 4420770 - Caterpillar

Illustration 20 g03784084
The illustration shows the use of a stone for polishing for the removal of a sharp edge that was caused by a scratch or a nick.
USE THIS PART AGAIN.This part can be used again after removing the sharp edge that was caused by a scratch or a nick.Wear and Grooves
Clutch plates with polished surfaces can be reused without further preparation. Do not reuse a plate if grooves are worn into the surface of the plate. If the clutch plates have been worn evenly, and the clutch plates do not have any grooves, the clutch plates can be reused without further preparation. The minimum thickness is given in Reuse and Salvage Guideline, SEBF8014, "Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions".
Illustration 21 g03784086
This plate has polished surfaces but the plate is not grooved or excessively worn.
USE THIS PART AGAIN.Parts with polished surfaces can be used again if the polished surfaces are not grooved or excessively worn.
Illustration 22 g03784119
This plate has grooves and ridges in the contact surface.
DO NOT USE THIS PART AGAIN.This part cannot be reused because of grooves and ridges in the contact surface.Low Spots
The methods that are used to manufacture some plates can produce low areas near the tangs. These areas are called low spots. These low spots are thinner than the rest of the disc. Plates with low spots are reusable if the plates meet the other criteria for reusability.
Illustration 23 g03784121
Plate with low spots
USE THIS PART AGAIN.Low spots are acceptable.High Spots
Transmission clutch plates that show a high spot (shiny surface) and/or a smeared surface in the area of the tang must be checked for a difference of thickness before the plates can be used again. Normally, clutch plates that have an indication of high spots at the tang will have little sign of wear on the face of reaction between the tangs. Specifications for the thickness of each clutch plate are given in the tables for identification in Reuse and Salvage Guideline, SEBF8014, "Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions".Use a micrometer to measure differences in thickness of the plate. Measure the thickness of the face of reaction at a high spot. Also, measure the thickness of the face of reaction halfway between the high spot and the next tang.Subtract the high measurement from the low measurement. The calculation will be the difference in thickness. Measure the difference in thickness at each high spot on the clutch plate. The clutch plate cannot be used again if the thickness difference at any point on the clutch plate is more than the given specification. These clutch plates can be put through a reconditioning operation.
Illustration 24 g03784123
Measure the clutch plates for a difference of thickness at areas (11) and (12).
Manufacturing and Handling Damage
Plates with manufacturing or handling damage can be used if all sharp edges and raised edges are removed.
Illustration 25 g03784124
Manufacturing or handling damage is shown on a clutch plate.
USE THIS PART