Town Car V8-281 4.6L SOHC (1991)
Oil Pan: Service and Repair
Fig. 23 Oil Pan Tightening Sequence
1.
Disconnect ground and positive battery cables.
2.
Remove air inlet tube.
3.
Drain cooling system, then remove cooling fan and shroud.
4.
Relieve fuel system pressure as outlined under MAINTENANCE PROCEDURES/FUEL SYSTEM PRESSURE RELIEF then disconnect fuel
lines.
5.
Remove upper radiator hose.
6.
Remove wiper module and support bracket.
7.
Discharge A/C system.
8.
Disconnect A/C compressor outlet hose, then remove hose assembly to righthand coil bracket attaching bolt.
9.
Remove engine electrical harness 42-pin connector from bracket on brake vacuum booster.
10.
Disconnect engine electrical connector, then disconnect transmission harness electrical connector.
11.
Disconnect throttle valve cable at throttle body.
12.
Disconnect heater outlet hose.
13.
Remove righthand cylinder head grounds strap attaching nut.
14.
Remove heater outlet hose assembly to righthand cylinder head upper attaching stud, then loosen lower bolt bolt and position aside.
15.
Remove blower motor resistor.
16.
Remove righthand engine mount to lower engine bracket attaching bolt.
17.
Disconnect EGR valve vacuum hoses and tube.
18.
Remove EGR valve to intake manifold attaching bolts.
19.
Raise and support vehicle, then drain engine oil.
20.
Remove righthand front engine mount two through bolts, then remove lefthand front engine mount through bolt.
21.
Remove EGR tube line attaching nut at righthand exhaust manifold, then remove EGR valve assembly.
22.
Disconnect exhaust pipes at exhaust manifolds, then lower and support exhaust at crossmember.
23.
Position suitable jack and wood block under oil pan, rearward of drain plug, then raise engine approximately 4 inches.
24.
Install two wood blocks approximately 2.5-2.75 inch thick under each engine mount.
25.
Lower engine to wood blocks, then remove jack.
26.
Remove oil pan attaching bolts. It may be necessary to loosen rear transmission mount attaching nuts and with suitable jack, raise extension
housing slightly to remove oil pan.
27.
Remove oil pan.
28.
Reverse procedure to install. Refer to Fig. 23, for oil pan bolt tightening sequence and torque specifications.
