Disassembly And Assembly
DISASSEMBLY1. Remove piston rings using a suitable piston ring expander.
2. Mark pistons to make sure assembly with same connecting rod and installation in same cylinders from which they were removed.
3. Using an Arbor Press and Piston Pin Remover and Replacer T68P-6135-A press piston pin from piston and connecting rod.
ASSEMBLY
1. Apply light coat of clean engine oil XO-1OW30-QSP or -DSP or equivalent meeting Ford specification ESE-M2C153-E to all parts.
NOTE: Check the fit of a new piston in the cylinder bore before assembling piston and piston pin to connecting rod. The piston pin bore of a connecting rod and diameter of piston pin must be within specification.
2. Assemble piston to connecting rod.
3. Start piston pin in piston and connecting rod (this may require a very light tap with a mallet). Using an Arbor Press and Piston Pin Remover and Replacer T68P-6135-A, press piston pin through piston until the piston pin is centered.
4. Check end gap of all piston rings. Piston ring end gap must be within specification. Follow instructions contained on piston ring package and install piston rings.
5. Check ring side clearance of compression rings with Feeler Gauge D81L-4201-A or equivalent, by inserting it between piston ring and lower land. The gauge should slide freely around entire piston ring circumference without binding. Any wear that occurs will form a step at inner portion of lower land. If lower lands have high steps, piston should be replaced.