CTM100 (06APR04) 02-050-21 P OWER T ECH 10.5 L & 12.5 L Diesel Engines 040604 PN=261 Camshaft and Timing Gear Train Replace Camshaft Bushings Camshaft bushings MUST BE replaced with cylinder head removed from engine. IMPORTANT: Use only hand tools for camshaft bushing removal and installation. DO –UN–09DEC97 NOT use pneumatic equipment for bushing replacement. Remove Camshaft Bushings RG8333 1. Remove camshaft. (See REMOVE AND INSTALL Removing Camshaft Bushings CAMSHAFT, earlier in this group.) A—JDG968-1 Bushing Remover B—313793 Forcing Screw 2. Remove spring pins from camshaft towers 3 and 5 C—JDG968-3 Guide (bushing locations 2 and 3). 3. No. 1 Bushing:
Install JDG968-1 Bushing Remover (A) in front side of No. 1 camshaft tower. 4. Lubricate 313793 Forcing Screw (B) and inset through remover with double nut and washer towards front of engine. 5. Install JDG968-3 Guide (C) in rear side of No. 2 tower with forcing screw through driver. Secure assembly with nut and washer. 6. Remove bushing from bore using a 1/2-in. drive ratchet wrench with deep-well socket on double nut and a combination wrench to hold single nut. Protect cylinder head with a shop towel on wrench handle. Remove remaining bushings using the same procedure as above and by positioning tool set as follows: 7. No. 2 Bushing: Install JDG968-1 Bushing Remover in rear of No.
3 tower and JDG968-3 Guide in front of No. 2 tower. 8. Install 313793 Forcing Screw with double nut toward front of engine. Use a 152.4 mm (6.0 in.) extension with ratchet to reach double nut. Continued on next page RG,RG34710,196 –19–25OCT00–1/7 02 050 21