Tech Tip: Ford/Lincoln/Mercury Transmission Fluid Leak
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Tech Tip: Ford/Lincoln/Mercury Transmission Fluid Leak

Follow these tips to diagnose and fix a transmission fluid leak on several Ford, Lincoln and Mercury models. The first step is to remove the LH halfshaft and inspect the halfshaft journal surface finish.

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Ford Lincoln Mercury transmission leakModels

Ford: 2009-2014 Escape; 2010-2014 Fusion; 2012-2014 Edge and Explorer; 2013-2014 Taurus

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Lincoln: 2013-2014 MKT and MKZ

Mercury: 2009-2011 Mariner; 2010-2011 Milan

Procedure

2013-2014 Escape/2010-2014 Fusion/2010-2011 Milan/2012-2014 Edge/Explorer/2013-2014 Taurus/MKT/MKZ

1. Remove the LH halfshaft.

2. Inspect the halfshaft journal surface finish (Figure 1). If the journal does not have any metal transfer from the bushing, the halfshaft can be reused. Use the service kit that contains only the bushing and seal. If the journal surface finish has metal transfer from the bushing, replace the front halfshaft. The replacement bushing with the red Teflon coating on the inside diameter of the bushing allows for the reuse of the original halfshaft if the halfshaft journal does not have any metal transfer from the original bushing.

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3. Replace the transmission case bushing. Refer to WSM, Section 307-01.

2009-2012 Escape/2009-2011 Mariner

1. Remove the LH halfshaft. Refer to WSM, Section 307-01.

2. Inspect the halfshaft journal surface finish (Figure 1). If the journal surface does not have any metal transfer from the bushing, the constant velocity (CV) joint can be reused. Use the service kit that contains only the bushing and seal. If the journal surface finish has metal transfer from the bushing, replace the inner CV joint housing.

3. Replace the transmission case bushing.

Courtesy of AllData.

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