Defender 110 (LD) V8-3.9L (1993)
Piston: Removal and Replacement
Pistons & Connecting Rods Removal
REMOVAL
1. Remove cylinder head(s).
2. Remove connecting rod bearings.
3. Remove carbon ridge from top of each cylinder bore.
4. Suitably identify each piston to its respective cylinder bore.
5. Push connecting rod and piston assembly to top of cylinder bore and withdraw assembly.
6. Repeat above procedure for remaining pistons.
CAUTION: Connecting rod bearing shells must be replaced whenever they are removed.
Piston and Connecting Rod Installation
INSTALL
1. Install oil control ring rails and expander, ensuring ends butt and do not overlap.
2. Install 2nd compression ring marked 'TOP' with marking uppermost into second groove.
3. Install 1st compression ring into first groove either way round.
4. Position oil control expander ring joint and ring rail gaps all at one side, between wrist pin and away from left hand side of piston-viewed from
front of piston. Space gaps in ring rails approximately 25 mm each side of expander ring joint.
5. Position compression rings with ring gaps on opposite sides of piston between wrist pin and right hand side of piston-viewed from front of piston.
6. Thoroughly clean cylinder bores.
7. Lubricate piston rings and wrist pin with engine oil.
8. Lubricate cylinder bores with engine oil.
9. Install ring clamp to piston and compress piston rings.