Workshop Manuals Factory service & repair Land Rover
01 4.0 & 4.6 Litre V8 Engine - 4th Edition02 03 04 05 INFORMATION06 07 08 GENERAL DATA09 10 11 12 TORQUE WRENCH SETTINGS13 SERVICE TOOLS14 15 16 17 18 DESCRIPTION AND OPERATION19 20 21 OVERHAUL
Land Rover Engine Overhaul Manual v8 4.0 4.621 · OVERHAUL
21 · General

Pistons and connecting rods - refit

Make
Land Rover
Model
Engines Engine Overhaul Manual v8 4.0 4.6
Section
Pistons and connecting rods - refit
OVERHAULPistons and connecting rods - refit
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ENGINE

OVERHAUL

37

Piston to cylinder bore clearance - checking

1. Starting with number 1 piston, invert piston and

with arrow on piston crown pointing towards
REAR of cylinder block, insert piston in cylinder
liner.

2. Position piston with bottom of skirt 30 mm (1.2

in) from top of cylinder block.

3. Using feeler gauges, measure and record

clearance between piston and left hand side of
cylinder - viewed from front of cylinder block:
Piston to bore clearance = 0.015 to 0.045 mm
(0.001 to 0.002 in)

4. Repeat above procedures for remaining

pistons.

Pistons and connecting rods - refit

1. Fit oil control ring rails and expander, ensuring

ends butt and do not overlap.

2. Fit 2nd compression ring marked ’TOP’ with

marking uppermost into second groove.

3. Fit 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 gudgeon pin
and away from left hand (thrust) side of piston -
viewed from front of piston. Space gaps in ring
rails approximately 25 mm (1.0 in) each side of
expander ring joint.

5. Position compression rings with ring gaps on

opposite sides of piston between gudgeon pin
and right hand side of piston - viewed from
front of piston.

6. Thoroughly clean cylinder bores.
7. Lubricate piston rings and gudgeon pin with

engine oil.

8. Lubricate cylinder bores with engine oil.

Parts & tools for this job Staging For Land Rover Engines

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