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Category: Duramax LLY

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Rocker Arm Cover Removal

Posted on September 8, 2022

1. Remove injection line support bracket from studs (Figure 2-77). 2. Remove cover attaching bolts and studs. 3. Remove rocker arm cover. Tap cover with…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Fuel Supply and Return Line Removal

Posted on September 8, 2022

1. Loosen clamp and remove fuel supply hose from fuel injection pump (Figure 2-76). 2. Loosen clamps and remove fuel return hose from injection pump…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Fuel Injection Line Removal

Posted on September 8, 2022

NOTE: Mark or tag fuel injection lines for installation reference. 1. Disconnect lines at injector nozzles (Figure 2-75). 2. Remove clamp and boot from lines…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Water Crossover Removal

Posted on September 8, 2022September 8, 2022

1. Loosen clamp and disconnect bypass hose at water crossover (Figures 2-73 and 2-74). 2. Remove crossover attaching bolts/studs and remove crossover. Discard crossover gaskets…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Turbocharger and Center Manifold Removal

Posted on September 8, 2022

1. Remove turbocharger inlet and outlet pipes. 2. Remove bolts attaching turbocharger to engine. 3. Remove bolts attaching vacuum actuator to turbocharger and engine block.…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Intake Manifold Removal

Posted on September 8, 2022

1. Remove bolts and studs attaching each manifold half to cylinder head. 2. Tap each manifold half with rawhide mallet to loosen it. 3. Lift…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Exhaust Manifold Removal

Posted on September 8, 2022

1. Loosen turbocharger left side inlet pipe flange clamps. 2. Remove left side inlet pipe. 3. Remove left side manifold attaching bolts and remove manifold…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Power Steering Pump and Bracket Removal

Posted on September 8, 2022

1. Remove bolts/nuts attaching pump mounting bracket to block and cylinder head and remove pump and bracket as assembly. 2. If pump requires service, remove…

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – A/C Compressor Removal

Posted on September 8, 2022

1. Remove A/C compressor braces. 2. Remove bolts/nuts attaching compressor to mounting bracket and remove compressor (Figure 2-66).  

Duramax LLY

Duramax LLY – ENGINE DISASSEMBLY – Alternator and Bracket Removal

Posted on September 8, 2022

1. Remove alternator mounting bolts and remove alternator. 2. Remove alternator mounting and support bracket bolts and remove both brackets (Figure 2-65). 3. Remove filler…

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