Operation CHARM: Car repair manuals for everyone.

Clutch Plate Diagnosis

Inspect
Composition Plates Dry the plates and inspect the plates for the following conditions:
- Pitting
- Flaking
- Wear
- Glazing
- Cracking
- Charring
- Chips or metal particles embedded in the lining Replace a composition plate which shows any of these conditions.

Steel Plates
Wipe the plates dry and check the plates for heat discoloration. if the surfaces are smooth, even if color smear is indicated, you can reuse the plate. If the plate is discolored with heat spots or if the surface is scuffed, replace the plate.

Important: If the clutch shows evidence of extreme heat or burning, replace the springs.

Causes of Burned Clutch Plates
The following conditions can result in a burned clutch plate:
- Incorrect usage of clutch plates
- Engine coolant in the transmission fluid
- A cracked clutch piston
- Damaged or missing seals
- Low fine pressure
- Valve problems:
The valve body face is not flat
Porosity between channels
The valve bushing clips are improperly installed
The checks balls are misplaced
- The Teflon seal rings are worn or damaged