SECTION 303-01B: Engine — 5.0L (4V)
2014 Mustang Workshop Manual
DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIES
Procedure revision date: 01/07/2013

Cylinder Head


Special Tool(s)
Compressor, Valve Spring
303-1418
Compressor, Valve Spring
303-300 (T87C-6565-A)
Compressor, Valve Spring
303-350 (T89P-6565-A)
Compressor, Valve Spring
303-1249

Material
Item Specification
Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor Oil (US); Motorcraft® SAE 5W-20 Super Premium Motor Oil (Canada)
XO-5W20-QSP (US); CXO-5W20-LSP12 (Canada) 		WSS-M2C945-A


Item Part Number Description
1 6518 Valve spring retainer key (32 required)
2 6514 Valve spring retainer (16 required)
3 6513 Valve spring (16 required)
4 6571 Valve seal (16 required)
5 6507 Intake valve (8 required)
6 6505 Exhaust valve (8 required)

Disassembly

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan, can cause engine failure.

NOTE: If the components are to be reinstalled, they must be installed in their original locations. Mark the components for installation into their original locations.

  1. Using the Valve Spring Compressors, remove the keys, retainer and spring.
  1. Remove and discard the valve seal.
  1. Remove the valve from the cylinder head.
  1. Repeat the previous steps for each of the remaining valves.

Assembly

NOTE: Apply clean engine oil to the valve seals and the inside diameter of the valve guides prior to assembling the cylinder head components.

  1. NOTE: The valve seal must be bottomed out on the cylinder head spring seat.

    Install the valve seal.
  1. Install the valve into the cylinder head.
  1. Using the Valve Spring Compressors, install the spring, retainer and keys.
  1. Repeat the previous steps for each of the remaining valves.