Heads FORD MUSTANG 2003 Owner's Guide

4.
CAUTION: The camshaft timing marks must be correctly lined up or damage to the
valves and pistons can occur.
NOTE: The copper links on the timing chain may not line up with the timing marks on the
sprockets.
Make sure the timing marks on the camshaft sprockets are correctly positioned. If necessary,
turn the crankshaft one full turn clockwise to correctly position the sprockets.
5. NOTE: LH shown; RH similar.
Remove the two bolts, the timing chain tensioner and tensioner arm.
6. 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 will occur.
Remove the LH and RH timing chains and the crankshaft sprocket.
zRemove the special tool from the crankshaft.
z Remove the RH timing chain from 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 and the crankshaft sprocket. Klj . 2 ba
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removed and the cylinder heads are installed is the crankshaft or the camshaft to be
rotated. Severe piston and valve damage will occur.
CAUTION: Rotate the crankshaft counterclockwise only. Do not rotate past position
shown or severe piston or valve damage will occur.
Using the special tool, position the crankshaft.
7. Remove the special tool.
8. Install the crankshaft sprocket with the flange facing forward.
9. NOTE: LH timing chain shown; RH similar.
Install the LH timing chain onto the crankshaft sprocket, aligning the one copper link on the
timing chain with the slot on the crankshaft sprocket.
10. Verify the camshaft sprocket to copper link alignment. Klj . 5 ba
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51. Remove the RH and the LH timing chains and crankshaft sprocket.
52. Remove the RH and LH timing chain guides.
53. Remove the RH and LH cylinder heads.
54. Remove the oil filter adapter.
1. Remove the oil filter.
2. Remove the bolts.
3. Remove the oil filter adapter.
4. Remove the gasket. Klj . 16 ba
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procedures.
Make sure the camshaft timing sprockets are positioned correctly.
25. NOTE: The LH is shown; the RH is similar.
NOTE: Lubricate the bolt heads and threads. Use clean engine oil.
Install the LH and RH cylinder heads and tighten the bolts in six stages in the sequence shown. zStage 1: tighten to 40 Nm (30 lb- ft).
z Stage 2: tighten an additional 90 degrees.
z Stage 3: loosen the bolts a minimum of one full turn.
z Stage 4: tighten to 40 Nm (30 lb- ft).
z Stage 5: tighten an additional 90 degrees.
z Stage 6: tighten an additional 90 degrees.
26. CAUTION: Timing chain procedures must be followed exactly or damage to valves
and pistons will result.
Compress the tensioner plunger, using a vise. Klj . 10 ba
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position. Rotate the RH camshaft timing sprocket until the timing mark is at approximately 11
o'clock position.
32. CAUTION: 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.
CAUTION: Rotate the crankshaft counterclockwise only. Do not rotate past position
shown or severe piston and/or valve damage will occur.
Using the special tool, position the crankshaft.
zRemove the special tool.
33. Install the crankshaft sprocket with the flange facing forward.
34. Install the LH and RH timing chain onto the crankshaft sprocket, aligning the one copper (or marked) link on the timing chain with the slot on the crankshaft sprocket. Klj . 12 ba
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DESCRIPTION AND OPERATION
Engine Cooling
CAUTION: Vehicle cooling systems are filled with Motorcraft Premium Gold Engine
Coolant VC -7-A (in Oregon VC -7-B) or equivalent meeting Ford specification WSS- M97B51-A1
(yellow color). Always fill the cooling system with the same coolant that is present in the
system. Do not mix coolant types.
NOTE: The addition of Motorcraft Cooling System Stop Leak Pellets, VC- 6, darkens Motorcraft
Premium Gold Engine Coolant from yellow to golden tan.
The 4.6L cooling system components include the:
zblock heater
z engine coolant temperature (ECT) sensor
z fan blade, fan motor and fan shroud assembly
z radiator
z pressure relief cap
z radiator draincock
z coolant pump
z coolant thermostat
z oil filter adapter
z radiator overflow hose
z upper radiator hose
z lower radiator hose
The radiator overflow hose circulates the coolant.
The coolant thermostat:
zcontrols the engine coolant temperature.
z allows for quicker engine warm- up.
The degas bottle/coolant expansion tank:
zprovides a location for service fill.
z contains coolant expansion and system pressurization.
z provides air separation during operation.
z replenishes the engine coolant to the system.
The engine coolant flows:
zfrom the lower radiator hose to the coolant pump.
z from the coolant pump to the engine block and the cylinder heads.
SECTION 303-
03A: Engine Cooling 2003 Mustang Workshop Manual Klj . 1 ba
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6. Install a new O-
ring seal on the coolant bypass tube.
7. CAUTION: Do not cut the O- ring seal during tube installation or engine coolant
leakage may occur.
Clean the O- ring sealing surface on the cylinder heads and lubricate the O- ring seal. Use
premium engine coolant.
8. To install, reverse the removal procedure. Klj . 2 ba
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6. Remove the bolts and the bypass tube.
7.
NOTE: Do not cut the O- ring seal during tube installation into cylinder heads or engine coolant
leakage may occur.
NOTE: Wipe the O- ring sealing surface on the cylinder heads with a soft cloth, if necessary and
lubricate the O- ring seal. Use premium engine coolant.
To install, reverse the removal procedure
8. Fill the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section. Klj . 2 ba
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GENERAL PROCEDURES
Disc Check
WARNING: Dust and dirt present on wheel brake and clutch assemblies may contain
asbestos fibers that are hazardous to health when made airborne by cleaning with compressed
air or by dry brushing. Failure to follow these instructions may result in personal injury.
WARNING: Wheel brake assemblies and clutch facings should be cleaned using a vacuum
cleaner recommended for use with asbestos fibers such as the brake automobile brake drum
system with vacuum. Dust and dirt from the vacuum should be disposed of in a manner that
prevents dust exposure such as sealed bags. The bag must be labeled according to OSHA
instructions and the trash hauler notified as to the bag's contents. Failure to follow these
instructions may result in personal injury.
WARNING: If a vacuum suitable for asbestos is not available, cleaning should be done
wet. If dust generation is still possible, technicians should wear government- approved toxic
dust purifying respirators. Failure to follow these instructions may result in personal injury.
WARNING: Grinding or sanding on the brake linings, pads, rotors, drums or clutch
facings should be done only while using correct exhaust- ventilated equipment. Failure to
follow these instructions may result in personal injury.
WARNING: OSHA requires areas where asbestos dust generation is possible to be
isolated and posted with warning signs. Only technicians concerned with carrying out brake or
clutch service should be present in the area. Failure to follow these instructions may result in
personal injury.
1. Check the clutch disc lining surface for hardening or the presence of oil.
2. Check for a worn clutch disc lining. Measure the minimum allowable depth to the rivet heads with a slide caliper.
SECTION 308-
00: Manual Transaxle/Transmission and Clutch — General
Information 2003 Mustang Workshop
Manual Special Tool(s)
Brake/Automobile Brake Drum
System with Vacuum
164-
R3622 or equivalent Dial Indicator/Magnetic Base
100-
D002 (D78P-4201- B) or
equivalent Klj . 1 ba
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