FORD MUSTANG 2003 Workshop Manual

53. Remove the RH and LH timing chain tensioner (RH shown, LH similar).
1. Remove the bolts.
2. Remove the timing chain tensioners.
3. Remove the timing chain tensioner arms.
54. CAUTION: Unless otherwise instructed, at no time when the timing chains are
removed and the cylinder heads are installed is the crankshaft or the camshaft to be
rotated. Severe piston and valve damage can occur.
CAUTION: Do not remove the special tool from the camshafts.
Remove the LH and RH timing chains and the crankshaft sprocket. zRemove the RH timing chain from the camshaft sprocket.
z Remove the RH timing chain from the crankshaft sprocket.
z Remove the LH timing chain from the camshaft sprocket.
z Remove the LH timing chain from the crankshaft sprocket. Klj . 18 ba
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55.
NOTE: The LH is shown and the RH is similar.
Remove the bolts and the timing chain guides.
56. NOTE: One side shown, other side similar.
Install the lifting handles to the RH and LH cylinder heads. Klj . 19 ba
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57.
CAUTION: New cylinder head bolts must be installed. They are tighten- to-yield
designed and cannot be reused.
CAUTION: Place cylinder head on cardboard or wood surface to prevent damage to
the joint face.
Remove the RH and LH cylinder heads. 1. Remove the bolts.
2. Remove the cylinder heads.
58. CAUTION: Do not use metal scrappers, wire brushes, power abrasive discs or other
abrasive means to clean gasket surfaces. These tools cause scratches and gouges that
make leak paths. Use a plastic scrapping tool to remove all traces of the head gasket
(6051).
Clean and inspect all of the sealing surfaces. For additional information, refer to Section 303 -
00 .
59. Remove the oil pump screen cover and tube, and the spacer. Klj . 20 ba
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60. Remove the oil pump.
61.
CAUTION: Do not stamp the top of pistons, as ring land damage can occur.
NOTE: Connecting rods and rod caps should be numbered to retain correct orientation.
Remove the connecting rod caps for piston numbers 1 and 6. zDiscard the bolts. Klj . 21 ba
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62.
CAUTION: Do not scratch cylinder walls or crankshaft journals with the connecting
rod.
NOTE: Before removing pistons, inspect the top of the cylinder bores. If necessary, remove the
ridge or carbon deposits from each cylinder using a cylinder ridge reamer following the
manufacturer's instructions.
Remove the piston removing pistons number 1 and 6 through the top of the cylinder block.
63. Repeat the previous two steps to remove the remaining pistons, rotating the crankshaft 90 degrees between piston pairs 3 and 5, 4 and 7, 2 and 8.
64. Remove the piston rings. Klj . 22 ba
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65. Clean and inspect pistons. For additional information, refer to
Section 303 - 00 .
66. Remove the crankshaft bearing cap fasteners. 1. Remove and discard the cross- mounted main cap bolts.
2. Loosen the jackscrews.
3. Remove and discard the main cap bolts.
67. Remove the main bearing cap and the crankshaft main bearings from the cylinder block.
68. Remove the crankshaft, crankshaft main bearings and the thrust washer. Klj . 23 ba
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Klj . 24 ba
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DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIES
Cylinder Head
Disassembly
1. Install the special tool.
2. Using the special tool, remove the roller followers.
SECTION 303-
01B: Engine — 4.6L (2V) 2003 Mustang Workshop Manual Special Tool(s)
Compressor, Valve Spring
303-381(T91P-6565-
A) Compressor Spacer, Valve
Spring
303-
382 (T91P-6565- AH) Installer, Valve Stem Oil Seal
303-
383 (T91P-6571- A)
Material Item Specification
Super Premium SAE 5W-20
Motor Oil
5W20- QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
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3. Using the special tool, compress the valve spring.
4. Remove the valves.
1. Remove the valve spring retainer keys.
2. Remove the valve spring retainers.
3. Remove the valve spring.
4. Remove the valves.
5. Remove the hydraulic lash adjusters.
6. Remove the bolts and the camshaft bearing caps. Klj . 2 ba
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7. Remove the camshaft (6250).
8. Remove the valve stem seals.
Assembly 1. NOTE: Lubricate all moving parts with clean engine oil prior to assembly. To install, reverse the removal procedure. Klj . 3 ba
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