John Deere — Remove Cylinder Head Serial Number ( —199,999)
Repair & overhaul
From a John Deere service manual — check it applies to your exact model before use.
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Before you start
- After operating engine, allow exhaust system to cool before working on engine.
- DO NOT drain coolant until coolant temperature is below operating temperature.
- DO NOT use screwdrivers or pry bars between cylinder block and cylinder head to loosen head-to-block gasket seal.
Procedure
- Drain engine oil and coolant and disconnect turbocharger oil inlet line.
- Remove coolant manifold and all coolant piping.
- Remove turbocharger and front and rear exhaust manifold.
- Remove air intake manifold.
- Remove fuel injection delivery lines and injection nozzles.
- Remove rocker arm cover with ventilator outlet hose assembly.
- Loosen all rocker arm adjusting screws.
- Remove six cap screws and all four rocker arm shaft clamps; remove rocker arm assembly.
- Remove all 12 push rods and identify for reassembly.
- Remove all 26 cylinder head cap screws and discard.
- Lift cylinder head from block; if stuck, tap with soft hammer.
- Remove cylinder head gasket and inspect for leaks.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: John Deere service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.