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Ford — Engine - Disassembly

Repair & overhaul

From a Ford service manual — check it applies to your exact model before use.

Applies to: Cummins/Onan WSG-1068 engine, Ford WSG-1068 engine

Before you start

  • Unless otherwise instructed, at no time when the timing chains are removed and the cylinder heads are installed is the crankshaft or camshaft to be rotated. Severe piston and valve damage will occur.
  • Make sure connecting rods and rod caps are numbered, to keep in proper orientation.
  • Do not scratch the cylinder walls or the crankshaft journals with the connecting rod.

Procedure

  1. With the engine on the engine stand, remove the engine wiring harness.
  2. Remove the oil pan (6675), oil pan gasket (6710), and oil pump screen cover and tube (6622).
  3. Loosen the sixteen valve cover bolts; remove the valve cover gasket (6584).
  4. Remove the drive belt, water pump pulley (8509), water pump bolts, and water pump (8501).
  5. Remove the crankshaft pulley bolt (6A340) and crankshaft pulley (6312) using the Crankshaft Damper Remover.
  6. Remove the crankshaft front seal (6700) using the Front Cover Seal Remover.
  7. Remove the engine front cover fasteners and engine front cover (6019) from the dowels (6C002).
  8. Remove the crankshaft sensor ring, balancing shaft bearing caps, and balancing shaft.
  9. Position the crankshaft with the Crankshaft Holding Tool; install Camshaft Holding Tools.
  10. Remove the timing chain tensioners (6L266) and tensioner arms (6L253).
  11. Remove the timing chains and crankshaft sprockets; remove the timing chain guides (6K297).
  12. Remove the exhaust manifolds (9430) and gaskets (9448).
  13. Remove the oil level dipstick, bolt, and oil level indicator tube (6754); install Lifting Handles.
  14. Remove the cylinder head bolts, cylinder head, and head gasket (6051); clean the engine block surface.
  15. Remove the engine mounts, oil filter adapter (6881), oil pump (6600), lower bearing supports, connecting rod caps, pistons and rods, main bearing caps, and bearings (6333).

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Source: Ford 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.

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