Jaguar XJ (X350). Manual — part 301

Connecting Rod Cleaning

1.

CAUTION: Do not use a caustic cleaning solution or damage to connecting rods

may occur.

Mark and separate the parts and clean with solvent. Clean the oil passages.

Connecting Rod Large End Bore

1. Measure the bearing bore in two directions. The difference is the connecting rod bore out-
of-round. Verify the out-of-round is within specification.

2. Measure the bearing bore diameter in two directions. Verify the bearing bore is within
specification.

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Crankshaft End Play

1. Using the Dial Indicator Gauge with Brackets, measure the end play.

•

Measure the end play by lifting the crankshaft using a lever.

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If the value is out of the specification, install new thrust half rings to take up the end

float and repeat the measurement.

Crankshaft Main Bearing Journal
Clearance - 3.0L

1. The main bearing machine codes are displayed on the crankshaft (1) and the cylinder block
(2)

2. NOTE:

Main bearing number 1 relates to the front of the engine.

Read the identification numbers from the crankshaft (1).

•

The first two numbers represent the code for main bearing number 1.

The second pair of numbers represents the code for main bearing number 2.
The third pair of numbers represents the code for main bearing number 3.
The last pair of numbers represents the code for main bearing number 4.

3. NOTE:

Main bearing number 1 relates to the front of the engine.

Read the identification numbers on the cylinder block (2).

•

The first two numbers represent the code for main bearing number 1.

The second pair of numbers represents the code for main bearing number 2.
The third pair of numbers represents the code for main bearing number 3.
The last pair of numbers represents the code for main bearing number 4.

4. Using the select fit chart, for each main bearing match the crankshaft code (1) and the
block code (2) with it's corresponding column or row. By reading across the crankshaft code
row (1) and down the block code column (2) select the correct grade bearing for each main.

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1 Crankshaft code.

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2 Block code.

5. E.g. if the crankshaft code is *8580*8082* and the Block code is *0609*0711*, main
bearing 1 should be assembled with a grade 1 bearing, as determined by the intersection of the
number 06 block column (2) and the number 85 crankshaft row (1).

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Main bearing 2, 3 and 4 would all be assemble with a grade 2.

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