Ford Workshop Service and Repair Manuals

Crankshaft

The five main bearing crankshaft has thrust half rings on the third main bearing that control the crankshaft end float.

Crankshaft timing sprocket

The crankshaft timing sprocket drives the injection pump sprocket by means of a chain drive. The crankshaft timing sprocket is held in position only by the clamping pressure of the center bolt.

Timing belt drive

The timing belt is driven by the injection pump pulley and transmits the valve timing to the overhead camshaft.

CAUTION:Because a new timing belt stretches considerably when it is first installed, the instructions for adjustment must be followed.

The tension of the timing belt drive is maintained by an automatic timing belt tensioner. The initial setting of the timing belt tension is carried out by the adjustment cam.

The camshaft timing pulley is retained on the camshaft by a taper. The required frictional force is applied to the camshaft by the center bolt.

Valve tappet, adjusting shims

The camshaft timing is transmitted to the valve springs by eight bucket tappets.

CAUTION:The lettering must face the tappets when the adjusting shims are installed.

Adjusting shims are available for adjusting the valve clearance. The thickness of these is indicated on the underside.

Cylinder head

Cylinder head gaskets of various thicknesses are available. Dependent on the piston protrusion, a certain thickness is assigned to the engine. This is indicated by indentations on the cylinder head gasket.

CAUTION:Thoroughly clean the gasket and mating faces. Do not use any sharp object for cleaning.

The cylinder head gasket is an MLS (multi-layered steel) gasket. The gasket consists of three steel layers. The steel layers have an outer covering of rubber. Because of this design, the longevity of the gasket is increased, and because the gasket does not settle during installation, the cylinder head bolts can be installed with lower clamping force. However, because of the rubber surface, the gasket is also more susceptible to grooves, and therefore it must be cleaned without using sharp objects.

Crankshaft oil seals

NOTE:The crankshaft rear oil seal is supplied with an alignment sleeve. It aligns the oil seal to the crankshaft rear flange.

NOTE:The crankshaft rear oil seal carrier must be aligned with the special tool.

CAUTION:If the alignment sleeve is removed too soon, the oil seal will be compressed and made unusable.

The front and rear oil seals are made of PTFE and must be free from oil when installed.

Both oil seals are supplied with an alignment sleeve. This must not be removed until after assembly.

Crankcase ventilation

The crankcase ventilation valve is located on the top of the valve cover. To provide optimal engine performance, this valve and all positive crankcase ventilation (PCV) hoses must be free of contaminants at all times.

Oil Sump

The oil pan is made of steel. It is sealed using silcone based sealant (WSE-M4G-323-A6).