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27.16b Removing the oil pump cover
28 Flywheel ring gear -
examination and renovation
Refer to Part A, Section 33 of this Chapter.
29 Crankcase ventilation system -
general information
The crankcase ventilation system is very
simple. One hose joins the rear air inlet
trunking to the oil filler cap, and another hose
joins the left-hand rocker cover to the plenum
chamber. Filtered (and metered) air passes
through the oil filler cap into the engine, and is
extracted, along with any other fumes, via the
second hose. Refer to Chapter 1 for
maintenance of the system.
30 Engine reassembly - general
information
Refer to Part A, Section 35 of this Chapter
but disregard the reference to new cylinder
head bolts when these are of the conventional
(hexagon-headed) type. Only Torx type bolts
need to be renewed.
31 Crankshaft and main
bearings - refitting
1 Wipe the bearing shell locations in the
crankcase with a clean rag and fit the main
31.8 Main bearing cap markings - arrow
points to front of engine
31.1 Rear main bearing shell in the
crankcase
bearing upper half shells in position (see
illustration).
2 Clean the main bearing shell locations and
fit the half shells in the caps.
If the old bearings are being
refitted (although this is false
economy unless they are
practically new) make sure
they are fitted in their original positions.
3 Fit the flanged shells to No 3 bearing.
4 Lubricate the shells and the main bearing
journals with engine oil.
5 Lubricate a new rear oil seal and fit it to the
end of the crankshaft, lips facing inwards.
6 Carefully place the crankshaft in position
(see illustration).
7 Make sure that the surfaces are clean, then
apply a film of sealant (Ford No A-70SX-
19554-BA, or equivalent) to the mating faces
of the crankcase and the rear main bearing
cap.
8 Fit the bearing caps, with the arrows on the
caps pointing to the front of the engine (see
illustration).
9 Insert the main bearing cap bolts. The bolts
for bearing caps No 2 and 3 have rounded
heads, and are 14 mm (0.55 in) longer than
those for caps 1 and 4.
10 Tighten the main bearing cap bolts
progressively to the specified torque.
11 Make sure that the crankshaft is free to
rotate. Some stiffness is to be expected with
31.13 Checking crankshaft endfloat
V6 engines 2C•15
31.6 Placing the crankshaft in position
new components, but there should be no tight
spots or binding.
12 Press the crankshaft rear oil seal firmly
against the rear main bearing.
13 Check the crankshaft endfloat, levering
the crankshaft back and forth and inserting
feeler blades between the crankshaft and No 3
main bearing (see illustration). Excessive
endfloat can only be due to wear of the
crankshaft or bearing shell flanges.
14 Coat the rear main bearing cap sealing
wedges with sealant and press into position
with a blunt screwdriver (see illustration). The
rounded end of each wedge carries a red paint
mark, which must face the bearing cap.
32 Camshaft and intermediate
plate - refitting
1 Slide the spacer ring onto the camshaft,
chamfered side first. Refit the Woodruff key if
it was removed.
2 Lubricate the camshaft bearings, the
camshaft and thrust plate.
3 Carefully insert the camshaft from the front
and fit the thrust plate and self-locking
securing bolts. Tighten the bolts to the
specified torque (see illustrations).
4 Fit the timing cover dowels and O-ring seals
onto the crankcase. The chamfered end of the
dowels must face outwards towards the timing
cover (see illustration).
5 Ensure that the mating faces of the
crankcase and front intermediate plate are
31.14 Fitting the rear main bearing cap
sealing wedges
2C
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