RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 6 (1998)
Camshaft Bearing: Service and Repair
^ The front cam bushing bore can be bored to 57.740 mm ±0.018 mm (2.273 inch ±0.0007 inch) oversize. DO NOT bore the intermediate or rear cam
bore to the front cam bore oversize dimensions. Intermediate and rear cam bores may be bored to 57.240 mm ±0.018 mm (2.253 inch ±0.0007 inch)
^ A surface finish of 2.3 micrometers (92 microinch) must be maintained. Not more than 20% of an area of any one bore may be 3.2 micrometers
^ Camshaft bores can be repaired individually. It is not necessary to repair undamaged cam bores in order to repair individually damaged cam bores.
The standard front bushing cannot be used to repair intermediate or rear bores.
^ Install all cam bushings flush or below the front cam bore surface. The oil hole must align to allow a 3.2 mm (0.125 inch) rod to pass through freely.