The contents of this section apply to the following models and serial number ranges. MODEL SERIAL NUMBER RANGE DL200-3 10001 and Up DL220-3 10001 and Up DL250-3 10001 and Up DL300-3 10001 and Up DL350-3 10001 and Up DL420-3 10001 and Up DL450-3 10001 and Up DL550-3 10001 and Up...
SAFETY MESSAGES Safety messages and safety decals included in this manual and on the machine provide instructions how to operate, service and maintain the machine. Safety messages and safety decals indicate potential hazards and describe safety precautions required to avoid hazards. Operator and maintenance personnel should read and understand these safety messages and decals before beginning operation or maintenance.
SAFETY DECALS Location of safety labels (decals) can vary from unit to unit. Refer to appropriate Operation and Maintenance Manual, and parts manual for your unit. Always replace damaged or faded decals. GENERAL Safe Operation is Operator's Responsibility Only trained and authorized personnel should operate and maintain the machine.
APPLICABLE MODELS The contents of this section apply to the following models and serial number ranges. MODEL SERIAL NUMBER RANGE DL300-3 10001 and Up DL350-3 10001 and Up Engine SP002541 Page 6...
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CYLINDER Cylinder Head Removal If the engine has EGR: Remove water-cooled EGR cooler as instructed in the work description for Removing the water-cooled EGR cooler. Remove brackets for the water-cooled EGR cooler. Remove bolts for the exhaust manifold on the relevant cylinder and slacken the bolts on the adjacent cylinders so the relevant part of the exhaust manifold comes loose.
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IMPORTANT If work is done on the 6th cylinder of an engine with an EGR system, the EGR valve control cylinder must be detached at the damper and removed. 10. Remove upper rocker cover and then the rocker arm housing, valve bridges and pushrods. FG020251 Figure 12 11.
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Tighten the cylinder head as shown in the illustration and according to specification. Cylinder head bolts can only be reused three times. Make a mark with a center punch on the head of the bolt. If any of the bolts already has three marks, it must be replaced. FG020253 Figure 14 FG020254...
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Install the injector, high-pressure pipe connection and high-pressure pipe as instructed in the work description. 10. Reset adjacent cylinders. 11. Adjust the valve clearance. 12. Install the upper rocker covers. 13. Install the cooling system vent 14. If the engine has an EGR system: •...
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Replacing a Valve Stem Seal Remove valve according to the work description for Removing valves. Remove valve stem seal with a pair of pliers. Install the valve. FG020261 Figure 20 Carefully tap a new valve stem seal into place using tool 99 323 and a hammer.
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Press in new valve seat inserts. Use drift 99 384 (2, Figure 99 385 22) and shank 99 385. Cool the drift and valve seat insert to about -80°C with dry ice or liquid air. Pressing must be 99 384 done rapidly.
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Replacing the XPI Injector Sleeves The cylinder head must be removed when replacing the unit injector sleeve. The valves do not need removing. The illustrations show the cylinder head with valves removed to demonstrate clearly the work described. NOTE: Guide and pilot tap on extension piece 99 397. FG020272 Figure 26 Thread the lower part of the sleeve using the pilot tap and...
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