Hello,
I've just stripped down my OM642 Diesel and am in the process of measuring and cleaning the pistons. The car is a GL320 with 220,000 kms
Ive separated the piston head from the con-rod,found this quite difficult as the only tools I had that were small enough to slip in to the groove on the piston to lift the clip would bend, in the end used a combination of small screw drivers. Is there a special tool for this operation?
To clean the pistons I soaked them in neat Simple Green - Purple, the majority of the carbon just brushed off with a toothbrush after a couple of days.
To the best of my knowledge this engine hasn't been dismantled since new but the piston rings do not match the style shown in the WIS. The top two rings are of different depths, 1.95mm (this ring has a partially readable number GOE 5) and 1.88mm, the cylinder wall contact edge are the same just a flat edge with a slight bevel, there doesn't appear to be an tapered face hook scraping ring as depicted by the WIS.
Does anyone know if this is normal.
I've just stripped down my OM642 Diesel and am in the process of measuring and cleaning the pistons. The car is a GL320 with 220,000 kms
Ive separated the piston head from the con-rod,found this quite difficult as the only tools I had that were small enough to slip in to the groove on the piston to lift the clip would bend, in the end used a combination of small screw drivers. Is there a special tool for this operation?
To clean the pistons I soaked them in neat Simple Green - Purple, the majority of the carbon just brushed off with a toothbrush after a couple of days.
To the best of my knowledge this engine hasn't been dismantled since new but the piston rings do not match the style shown in the WIS. The top two rings are of different depths, 1.95mm (this ring has a partially readable number GOE 5) and 1.88mm, the cylinder wall contact edge are the same just a flat edge with a slight bevel, there doesn't appear to be an tapered face hook scraping ring as depicted by the WIS.
Does anyone know if this is normal.
