Land Rover Engine 2.0 Litre T Series. Manual — part 11
ENGINE
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29
13. Fit securing bolts ensuring that M10 x 20 bolt is
fitted at position 7, tighten bolts in sequence
shown to:
M6 bolts - 8 Nm
M10 bolt - 45 Nm.
14. Slide oil seal protector sleeve LRT-12-070 on
to crankshaft.
15. Fit new oil seal using tool LRT-12-069.
16. Remove oil seal protector sleeve LRT-12-070.
17. Position timing belt lower cover backplate to
cylinder block.
18. Fit and tighten bolts to 6 Nm.
19. Fit Woodruff key to crankshaft.
20. Slide crankshaft timing gear on to crankshaft.
21. Fit camshaft timing belt.
PISTONS, RINGS AND CYLINDER BLOCK
Pistons and connecting rods - remove
1. Remove cylinder head.
2. Remove sump.
3. Remove big-end bearings.
4. Remove carbon ridge from top of each cylinder
bore.
5. Suitably identify each piston to its respective
cylinder bore.
6. Push pistons to top of cylinder bores; withdraw
each piston and connecting rod assembly.
CAUTION: Ensure connecting rod big-end
bosses do not contact cylinder bores.
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Piston rings - remove
1. Using a suitable expander remove and discard
piston rings.
2. Using squared off end of an old piston ring,
remove carbon from piston ring grooves.
Piston rings - inspection
1. Check new ring to groove clearance:
Top compression A = 0.06 to 0.09 mm
2nd compression B = 0.05 to 0.07 mm
Oil control C = 0.03 to 0.05 mm
2. Insert new piston rings in turn 20 mm from top
of cylinder bore.
3. Check new ring gap:
Top compression = 0.25 to 0.35 mm
Second compression = 0.3 to 0.5 mm
Oil control rails = 0.38 to 1.14 mm
CAUTION: Ensure that on completion of
checking, piston rings are identified with
the cylinder in which they were checked.
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Pistons - inspection
1. Clean carbon from pistons.
2. Check pistons for distortion and cracks.
3. Using fingers only, check that each big-end
bearing cap nut runs freely on the threads of its
respective connecting rod bolt; if threads show
signs of binding, bolt and nut must be replaced.
CAUTION: Arrow on bolt head must face
away from connecting rod. Retain nuts
with their respective bolts.
4. From markings on piston crown, determine
which grade of piston is fitted - A or B.
5. Measure piston diameter at 90
°
to gudgeon pin
axis and 10 mm from bottom of skirt.
Grade A = 84.409 to 84.422 mm
Grade B = 84.423 to 84.436 mm
6. Starting with number 1 piston, invert piston and
connecting rod and with arrow on piston crown
pointing towards REAR of cylinder block, insert
piston into top of cylinder bore.
7. Position piston with bottom of skirt 50 mm from
top of cylinder bore.
8. Using feeler gauges, measure and record
clearance between piston skirt and left hand
side of cylinder bore 60 mm from top of bore
(viewed from front of cylinder block).
Grade A or B piston clearance in cylinder bore
= 0.04 mm - maximum
NOTE: Oversize pistons are not available.
Pistons and connecting rods are only
supplied as an assembly.
9. Repeat above procedures for remaining
pistons.
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Cylinder block - inspection
1. Clean carbon deposits from cylinder bores.
2. Check cylinder bores for scoring.
3. Check cylinder bores for wear, measure and
record diameter of each bore, 60 mm from top
of cylinder bore.
Bore diameter:
Grade A = 84.442 to 84.455 mm
Grade B = 84.456 to 84.469 mm
CAUTION: Measurements must be taken
from side to side and front to rear of bore.
No honing or glaze busting of cylinder
bores is permissible.
NOTE: Cylinder bore grade is stamped on
a machined lug at the rear, RH side of
cylinder block. Grade A cylinder bores
may be machined to grade B dimensions and
grade B pistons fitted.
4. Check core plugs for condition, replace as
necessary.
5. Check that all bolt holes are clean and dry.
6. Check that oil and water passages are clear.
7. Remove all traces of gasket material from
cylinder block using suitable gasket removal
spray and a plastic scraper.
8. Check cylinder block gasket face for scratches
or indentations paying particular attention to
areas around top of cylinder bores and oil feed
hole.
9. Check that oil restrictor - if fitted is clear,
remove or fit restrictor depending on type of
cylinder head gasket to be fitted:-
See cylinder
head gasket selection.
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