1.1 CYLINDER BLOCK AND CYLINDER LINER 7. Apply 138 kPa (20 psi) air pressure to the water jacket and maintain this pressure for at least two hours to give the water and antifreeze mixture ample time to work its way through any cracks which may exist. 8. At the end of this test period, examine the outside diameter area of the liner flanges, oil passages, crankcase and exterior of the block for presence of the water and antifreeze mixture, which will indicate the presence of cracks. A cracked cylinder block must be replaced with a new block.
EYE INJURY To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 276 kPa (40 psi) air pressure. 9. After the pressure test is completed, remove the test deck plate and gasket and the water inlet cover plate. Drain the water jacket. Then blow out all of the passages in the cylinder block with compressed air. 10. Install the cylinder block to the engine overhaul stand (J–29109). See Figure 1-6. (Rev. 2005) All information subject to change without notice. 1-18 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION