1.4 VALVES, SPRINGS, GUIDES, INSERTS, SEALS AND ROTATORS 1.4.1 Repair or Replacement of Valves To determine if repair is possible or replacement is necessary, perform the following procedure. See Figure 1-70. Figure 1-70 Flowchart for Repair or Replacement of Valves 1.4.2 Removal and Cleaning of Valve Spring (Cylinder Head Installed) Perform the following steps for valve spring removal: 1. Clean any dirt and debris from the valve rocker cover joint area around the top of the cylinder head. Remove the valve rocker cover. Refer to section 1.6.2 (one-piece), refer to section 1.6.3 (two-piece), refer to section 1.6.5 (three-piece). 2.
If the engine has a Jake Brake®, remove the Jake Brake® housings that cover the rocker arm and shaft assembly for the valve to be serviced refer to section 1.36.2. (Rev. 2005) All information subject to change without notice. 1-84 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION