Samand
Samand
Service Manual
Engine: XU7JPL3
Product:
Chapter: Section: SAMAND XU7JPL3
XU7JPL3Engine
SAMAND
Service Manual
Foreword:
This Service Manual contains descriptions of the following categories for the
Samand:
Engine: XU7JPL3
This manual should be used as service manual and s workbook for training
instructors and technicians. We reserve the right to introduce change without
prior notice.
I
Important
Warning
Lengthy and repeated contact with mineral oil removes
the natural oils of your skin, drying it out and causing
irritation. If oil has been swallowed, do not provoke
vomiting. Call a doctor.
Waste oil may contain harmful impurities which can
cause skin cancer. Always use suitable protection and
thoroughly wash your hands and other areas of bare
skin that have come into contact with the oil.
Observe the following safety rules:
Avoid lengthy and repeated contact with oil,
grease, etc. And especially waste oil.
Wear protective clothing, including impermeable
gloves, if possible.
Do not put oily rags into your pockets.
Do not wear clothes that have been soiled by oil,
especially items of underwear. Clothes must be
washed at regular intervals.
Do not wear oily shoes.
Clean open sores immediately and cover them
with an adhesive bandage, sticking plaster, etc.
Use barrier cream. Apply it to your exposed skin
before each working period so that it will be easier
for you to wash oil and grease off afterwards.
Remove oil from your face and hands, etc. by
washing them thoroughly with soap and water
(special skin cleansers and a nailbrush will help).
Do not use petrol, paraffin, diesel oil, thinner or
solvents to remove oil from any part of your body.
If you notice any changes in your skin, consult a
doctor without delay.
If possible, clean the parts before starting work.
If there is a danger of oil getting into your eyes,
wear protective goggles, a visor or a face mask.
Eye-washing equipment must also be readily
available.
Contents
Engine
Technical data
General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Engine block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pistons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Piston rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connecting rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Valve gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Lubricating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Torque settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Special tools
Cross piece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Lifting hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ball joint extractor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
AY hub clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Left-hand output oil seal fitting drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Right-hand output oil seal fitting drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Piston liner retaining clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Piston liner retaining clamp bolts M11x150x60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Camshaft gear setting rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Camshaft levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Camshaft gear stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Camshaft oil seal fitting drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Crankshaft setting rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Belt tension measuring equipment seem c.Trionic type 87. . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Crankshaft pulley extractor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Flywheel stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pressure testing kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Right-hand crankshaft oil seal fitting drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Left-hand crankshaft oil seal fitting drift. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Crossbeam and adjusting screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Crossbeam support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Gudgeon pin fitting tool base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Gudgeon pin fitting tool handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Gudgeon pin fitting tool guide end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Gudgeon pin fitting tool Piston locater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Plastigauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Number 5 main bearing seals fitting tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Technical description
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pistons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Connection rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Crankshaft assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cylinder head and camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Engine
Technical data
General data
Engine type XU7 JP
Cylinder bore 83mm
Stroke 81mm
Swept volume 1761 cm3
Direction of rotation Clockwise
W72S001
Engine block
Group A: 83.000-83.010mm
Group B: 83.010-83.020mm
Group C: 83.020-83.030mm
Liner protrusion above block 0.03-0.10mm
mating surface:
Maximum difference between 0.05mm
two liners:
W72S002
Cylinder head
Height 157.4 to 157.7mm
Maximum gasket face distortion 0.07mm
W72S003
4 Technical data
Pistons
Classification of pistons and cylinder liners
The piston classification code is stamped on the piston
crown. The codes for servicing are:
A
B
C
The piston liner classification is marked on the liner top face.
Piston sizes
Group A 82.960±0.007mm
Group B 82.970±0.007mm
W72S004
Group C 82.980±0.007mm
Piston rings
End gap:
Chromed radius ring 0.30-0.50mm
Taper ring 0.30-0.50mm
Scraper ring 0.30-0.50mm
Note: These figures are typical for this type of engine.
No exact values were available.
Gudgeon pin
The gudgeon pin is a interference fit with the
connection rod.
W72S005
Connecting rods
Maximum permissible weight variation per set 13g
W72S006
Crankshaft
General data
End float 0.07-0.32mm
Maximum journal out of round 0.007mm
Main bearing clearance 0.025-0.062mm
*Big end bearing running clearance 0.025-0.050mm
W72S007
W72S008
W72S009
6 Technical data
C
Valve gear
C
Inlet Exhaust
A: Length 108.59-108.99mm 108.20-108.54mm
B: Head diameter 41.6mm 34.5mm
C: Stem diameter 7.96-7.98mm 7.95-7-97mm
Valve clearance 0.20mm 0.40mm
A A
B B
W72S010
Camshaft
Timing belt driven
Number of bearings: 5
W72S011
Lubricating system
Oil capacity 3.9litres
Volume max and min 1.5litres
on dipstick
Grade of oil Multigrade
Viscosity SAE 10W/30 to
15W/50
Warning lamp comes 0.8bar
on at
Minimum oil pressure 5.3bar
at 4000rpm, engine
temperature 80ÞC
W72S012
Torque wrench setting
Big-end bearing cap nuts:
Stage 1 20 Nm
Stage 2 ?? Nm
Camshaft bearing cap nuts 15 Nm
Camshaft sprocket retaining bolt: 35 Nm
Crankshaft pulley retaining bolt 35 Nm
Cylinder head bolts:
Stage 1 60 Nm
Fully slacken then tighten to:
Stage 2 20 Nm
Cylinder head cover nuts/bolts 10 Nm
Left-hand engine mounting:
Mounting bracket to body bolts 25 Nm
Mounting stud 25 Nm
Centre nut 65 Nm
Engine to gearbox fixing bolts 45 Nm
Torque reaction link:
Mounting assembly-to-block bolts 45 Nm
Mounting bracket-to-mounting bolt 50 Nm
Mounting bracket-to-subframe bolt 50 Nm
Engine right-hand mounting:
Bracket-to engine bolts 45 Nm
Mounting bracket retaining bolts 45 Nm
Flywheel/driveplate retaining bolts 50 Nm
Front oil seal carrier bolts 16 Nm
Main bearing cap nuts/bolts:
Retaining nuts/bolts 54 Nm
Centre bearing cap side bolts 23 Nm
Oil pump retaining bolts 16 Nm
Sump retaining bolts 10 Nm
Timing belt cover bolts 8 Nm
Timing belt tensioner pulley bolt 20 Nm
Special tools
Cross piece
(-).0102D
T.(-).0102D
Lifting hooks
(-).0102G
T.(-).0102G
T.(-).0709
10 Special tools
AY hub clamp
(-).0606AY
T.(-).0606AY
T(-).0317T
T(-).0317U
Piston liner retaining clamp
(-).0132A1Z
T.(-).0132A1Z
T.(-).0153J
T.(-).0153G
12 Special tools
Camshaft levers
(-).0149
T00149
T.(-).0132Y
T.(-).0132T
Technical Department
T.(-).0153G
T.SEEM87
T.(-).0174
14 Special tools
Flywheel stop
9765.54
T.9765.54
T.(-).1503ZY
T.(-).0153D
Left-hand crankshaft oil seal
fitting drift.
(-).0153B
T.(-).0153B
T.(-).0911A1
Crossbeam support
(-).0911 A2
T.(-).0911A2
16 Special tools
T.(-).0139A1
T.(-).0139B
T.(-).0139K
Gudgeon pin fitting tool Piston
locater
(-).0139L
T.(-).0139L
Plastigauge
T.(-).0153A1
Technical Department
Engine
The XU7 JP is a four-cylinder, in-line engine mounted
transversely at the front of the car, with two valves per
cylinder operated by a single overhead cam. The
cylinder block is of a light alloy with a cast iron
crankshaft incorporating eight balancing masses the
connecting rods are fitted with extra-flat pistons. The
timing is driven by a notched belt of high heat resistant
materials. The accessories are driven by a single
multiple vee-section belt with constant pressure being
supplied by an automatic tensioner.
The engine is equipped with a Magneti Marelli 8p fuel
injection system with the injection manifold being part of
the air inlet manifold.
XU7JPK - Sagem SL96
W72D001 XU7JPL3 - Sagem S2000
Cylinder Block
The cylinder block is cast in aluminium alloy, and the
bores have replaceable cast-iron liners that are located
from the top of the cylinder block. Sealing O rings are
fitted to the base of each liner, to prevent the escape of
coolant into the sump.
W72D002
20 Technical description
Pistons
The pistons are made of light alloy and have grooves
for two compression rings and one scraper ring.
The top compression ring has a chromed radius, the
second compression ring has an oil-scraper function.
The scraper ring incorporates an expander.
W72D003
Connection rods
The connecting rods rotate on horizontally-split bearing
shells at their big-ends, these bearing shells are
replaceable. The pistons are attached to the connecting
rods by gudgeon pins. The gudgeon pins are an
interference fit in the connecting rod small-end eyes.
W72D004
Crankshaft assembly
The crankshaft is made of cast iron and has eight
incorporated balancing masses. The crankshaft runs in
five main bearings with thrust washers fitted to number
two main bearing cap to control crankshaft endfloat.
The crankshaft rotates on horizontally-split bearing
shells at main bearings, these bearing shells are
replaceable.
W72D005
Technical description 21
W72D006
Lubrication
Lubrication is by means of an oil pump which is driven
via a chain and sprocket from the crankshaft right-hand
end. It draws oil through a strainer located in the sump
and forces it through an externally-mounted filter into
the galleries of the cylinder block. From there, the oil is
distributed to the crankshaft main bearings and
camshaft. The big-end bearings are supplied with oil via
internal drillings in the crankshaft, the camshaft
bearings also receive a pressurised supply. The
camshaft lobes and valves are lubricated by splash, as
are all other engine components.
W72D007
Adjustment and replacement
Engine remove
To remove
Special tools
1 Sling Bar (-).0102D.
3 1 2 Lifting hooks (-).0102G.
3 Ball joint extractor (-).0709.
4 Mounting plugs for drive shaft seals (-).0317T&U.
2
5 (-).0606 AY Hub clamp.
5
4 W72R001
W72R003
24 Adjustment and replacement
W72R072
W72R162
W72R004
Adjustment and replacement 25
12
12
W72R005
13
W72R006
16 15
W72R007
26 Adjustment and replacement
17
W72R008
W72R009
21
22
W72R010
Adjustment and replacement 27
24
W72R011
27
26 W72R012
30
W72R013
28 Adjustment and replacement
31
31
W72R014
32
32
32
W72R015
34
W72R016
Adjustment and replacement 29
35
W72R017
37
37
W72R018
W72R019
30 Adjustment and replacement
47
46 46
W72R020
50
51
W72R021
To fit
1 Refit is a reverse of the removal procedure,
though be aware of the following:
2 That no cables or hoses get trapped or pinched.
3 Inspect driveshafts and seals for wear, replace if
damaged.
4 Refill gearbox oil (see book 5).
5 Refill and bleed coolant system (see book 4).
Adjustment and replacement 31
W72R072
W72R162
W72R163
32 Adjustment and replacement
To fit
1 Refit is a reverse of the remove procedure.
W72R163
W72R160
Adjustment and replacement 33
1
W72R023
W72R024
W72R025
34 Adjustment and replacement
9 5 1 4 8
10 6 2 3 7
W72R035
To fit
Before refit:
- Inspect the rubber seal and replace if necessary.
- Replace air filter if it shows any signs of wear or
damage.
1 Refit is a reverse of the removal process, tighten
bolts to cylinder head cover in the sequence
shown, tighten to 10Nm.
Adjustment and replacement 35
4 5
W72R026
3
3
W72R032
W72R027
36 Adjustment and replacement
W72R028
10
W72R029
12
W72R030
Adjustment and replacement 37
13
W72R031
15
W72R033
18
W72R034
38 Adjustment and replacement
1 5 9 8 4
W72R036
W72R037
23
W72R038
Adjustment and replacement 39
25 25
W72R043
26
W72R044
40 Adjustment and replacement
W72R039
9 W72R041
Adjustment and replacement 41
11
10
W72R042
17
W72R045
19
W72R046
42 Adjustment and replacement
20
W72R047
22
W72R048
23
23
W72R049
Adjustment and replacement 43
W72R050
W72R051
W72R052
44 Adjustment and replacement
W72R053
10
W72R054
To fit
Before refit:
2 - Examine the camshaft, followers and bearing
surfaces for signs of wear or scoring, replace if
required.
1 Refit each shim to the top of its original valve
1
stem.
2 Lightly oil the cam follower bores and replace
each follower to its original bore.
W72R055
Adjustment and replacement 45
W72R056
W72R057
W72R058
46 Adjustment and replacement
W72R059
W72R060
W72R062
W72R063
W72R064
48 Adjustment and replacement
W72R065
To fit
Before refit:
- Check the sprocket and oil seal for signs of wear
or damage, replace if necessary.
1
- Lightly oil the lips of the seal before refit.
1 Refit the camshaft oil seal using (-).0132 T fitting
drift.
W72R066
W72R067
Adjustment and replacement 49
Valve remove
To remove
6 1 Remove the cylinder head (see page 35).
4 2 Remove the camshaft, followers and shims (see
page 43).
5 3 Compress each valve spring using a Facom U13L
type universal lifter.
4 Remove the split collets and release the tool.
5 Remove the spring retainer, spring and spring
seat.
5
6 Remove the valve stem oil seals.
7 Remove the valves from the bottom of the
cylinder head.
5 Note: Store each valve with its corresponding springs,
spring seats, retaining clips, followers e.t.c.
W72R068
To fit
Before refit:
- Examine each valve for bending, burning, pitting,
cracking and general wear.
- Check the springs for signs of distortion and
discolouration.
- Fit new valve stem oil seals as matter of course.
- Oil each valve stem and cam follower before refit.
1 Measure the valve stem width using a micrometer,
replace valve if any faults are detected.
W72R069
W72R070
50 Adjustment and replacement
1 3 2 W72R071
W72R072
6
W72R073
Adjustment and replacement 51
W72R074
W72R075
10
W72R076
52 Adjustment and replacement
11
W72R077
W72R078
13
W72R079
Adjustment and replacement 53
15
W72R080
To fit
1 Ensure that the camshaft setting tool is in
position.
2 Temporarily refit crankshaft and insert setting tool
to ensure crankshaft is correctly positioned. If
correct remove setting tool and remove crankshaft
pulley.
W72R081
W72R082
54 Adjustment and replacement
W72R083
W72R085
Adjustment and replacement 55
W72R086
10
W72R087
11
W72R088
56 Adjustment and replacement
12
W72R089
Adjustment and replacement 57
W72R090
4
W72R091
3
4 W72R092
1 W72R093
Oil refilling
6 1 Replace oil filter and refit drain plug and new
sealing washer, tighten to 35Nm.
2 Position engine undertray and replace three
screws and two nuts.
3 3 Lower the vehicle and remove the oil filler cap
and the engine oil dipstick.
4 Half fill the engine with the recommended quantity
and type of oil, then wait a short time for the oil to
reach the sump.
5 Add oil in small quantities checking occasionally
the level on the dipstick.
6 When full replace the filler cap and run the engine
for a time and check around the drain plug and
filter for any leaks. Stop the engine, check the oil
W72R094 level and top up if required.
Adjustment and replacement 59
1 2 W72R095
W72R096
W76R097
60 Adjustment and replacement
Sump remove
To remove
4
1 Remove the battery negative terminal.
2 On vehicles with air-conditioning remove the drive
belt (see page 31).
3 Put the vehicle on a lift and raise.
4 Remove three bolts, two nuts and engine
undertray.
5 Remove the oil drain plug and washer and allow
the engine oil to drain into a suitable container.
Refit the drain plug once the sump is empty,
tighten to 35Nm.
Warning: The engine oil and exhaust downpipe could
be extremely hot.
Note: It is recommended that the oil filter is also
changed during this operation (see page 58).
W72R098
W72R099
7
8
7
W72R100
Adjustment and replacement 61
To fit
Before refit:
1
- Clean the sump thoroughly.
- Remove all traces of sealant from the sump and
engine mating faces and wipe dry with a cloth.
- Check the gasket for signs of damage, replace if
required.
1 Apply a seam of sealant to the sump as shown in
the illustration.
W72R101
3
3
3
W72R102
W72R103
62 Adjustment and replacement
3
W72R104
6
6
W72R105
W72R159
Adjustment and replacement 63
To fit
Before refit:
- Thoroughly clean and dry all parts.
- Clean the oil strainer with a suitable solution and
examine it for signs of clogging or splitting.
1 Refit the woodruff key, lubricate the sealing ring
and slide it, together with the drive sprocket onto
the crankshaft.
2 Place the driving chain onto the sprocket.
2
1
W72R106
4
4
W72R107
7
W72R108
64 Adjustment and replacement
Flywheel remove
To remove
Special tools
1 Flywheel stop 9765.54.
W72R109
W72R110
3
4
W72R111
Adjustment and replacement 65
To fit
2 Before refit.
- Clean and dry all parts thoroughly.
- Inspect the flywheel for signs of scoring on the
clutch face and damage to the ring gear teeth.
Replace if required.
1 Refit the locating dowel to the crankshaft.
2 Position the flywheel on the crankshaft and hold
in position using 9765.54 flywheel stop.
W72R112
W72R113
66 Adjustment and replacement
W72R114
W72R115
W72R116
Adjustment and replacement 67
W72R117
W72R118
Left-hand mounting
1 Disconnect and remove the battery and its
supporting tray (see book 11).
2 2 Hold the engine in position with cross beam
(-).0911 A1 fitted with supports (-).0911 A2.
W72R120
5 To fit
4
4 Before refit examine the mounting rubber carefully for
signs of damage or hardening, replace if required.
1 Refit is a reverse of the remove procedure but
observe the following torque settings.
- Gearbox shaft 50Nm.
- Gearbox mounting nuts 23Nm.
- Mounting shaft nut 65Nm.
W72R121
Engine overhaul
A full engine overhaul requires the engine to be
6 8 completely free of all external components, the following
4
steps show the items to be removed. Refer to appropriate
7 manuals for more information on the relevant operations.
1 Engine from the vehicle.
5 2 Gearbox from engine.
3 Alternator and belt tensioner.
4 Power steering pump and bracket.
5 Thermostat and its housing.
6 Inlet manifold.
7 Ignition coil, high tension leads and spark plugs.
8 Cylinder head.
9 Starter motor and engine harness.
3 10 9 2 10 Oil filter.
W72R122
11 Exhaust manifold.
12 12 Dipstick tube.
13 Intermediate bearing housing.
14 Heater matrix pipes and housing.
11
14
13
W72R123
15 Timing belt.
16 Crankshaft pulley.
17 Timing belt tensioner and sprockets.
18 Water pump.
19 Sump.
20 Oil pump.
17 21 Flywheel.
The engine is now in a condition to overhaul all the
internal components of the cylinder block. The following
pages will give you a detailed operation of the different
stages.
15
17 W72R124
70 Adjustment and replacement
W72R126
W72R175
Adjustment and replacement 71
Inspection
1 Examine each piston for cracks around the skirt
and gudgeon pin holes.
2 Check the piston for scoring and the crown for
holes or burning.
3 Clean all traces of carbon from the piston crown
using a wire brush.
4 Examine connection rods for signs of damage,
replace if required.
5 New piston rings should be used as a standard
measure.
1
W72R143
W72R144
72 Adjustment and replacement
8
10
W72R146
13
W72R147
W72R148
Adjustment and replacement 73
W72R127
W72R128
W72R130
W72R131
W72R132
Adjustment and replacement 75
W72R133
W72R134
Crankshaft remove
1 Remove main bearing cap as described above.
2 2 Lift out the crankshaft and discard the oil seal.
3 Recover the upper bearing shells and the upper
thrustwasher halves from main bearing two.
3 Note: Keep the upper bearing shell with its matching
lower shell if they are going to be refitted.
3
3
3
3
W72R135
76 Adjustment and replacement
Crankshaft inspection
3 1 Thoroughly clean and dry the crankshaft.
2 Check for wear, scoring, pitting, and cracking
around the main and big end journals.
3 Using a micrometer, measure the main and big
end journals at a variety of different positions
around their circumference. If the distances vary
greatly then the journals will have to be ground
down or the crankshaft replaced.
4 Clean all oil holes with a suitable pipe cleaner.
W72R136
W72R149
W72R150
Adjustment and replacement 77
W72R151
Crankshaft refit
It is recommended that new bearing shells and thrust
bearings be fitted at this stage, recommended
2 thicknesses can be found in the technical data section.
1 Refit the upper bearing half shells and lightly
1 lubricate with oil.
2 Position the crankshaft.
3 3 Refit the two upper thrust half washers, the oil
grooved face towards the crankshaft.
3
3
3
3
W72R137
6
5
W72R138
78 Adjustment and replacement
10
W72R139
W72R140
W72R152
Inspection
1 Check each liner for signs of scuffing or scoring
and excessive wear around the top.
2 Measure the bore diameter at the top, middle and
3 2 bottom parrellel to the crankshaft axis.
3 Measure the bore diameter in the same three
areas but at 90Þ to the previous readings.
4 Compare the results with those in technical data
page ?, if there is a greater distance then the
liners will need replaceing.
W72R153
To fit
Before refit:
1 Thoroughly clean the liner and its mating surfaces
4 inside the engine.
2 Fit new O rings and apply grease to the bottom
of the liner.
3 Position the liner to the engine block noting the
4 locations marked on remove.
2 4 Firmly push the liners into position, use a small
hammer and wooden block to help.
4 5 Lightly oil all exposed areas of the liner and check
liner protrusion.
W72R154
80 Adjustment and replacement
W72R155
W72R156
W72R157
Adjustment and replacement 81
Engine build up
After a full engine overhaul the engine needs to be
completely fitted of all external components, the following
steps show the items to be fitted. Refer to appropriate
manuals for more information on the relevant operations.
1 Flywheel.
2 Oil pump.
3 Sump.
5 4 Water pump.
5 Timing belt tensioner and sprockets.
6 Crankshaft pulley.
7 Timing belt.
7
5 W72R167
11
8
W72R168
12 Oil filter.
18 16 14 13 Starter motor and engine harness.
15 14 Cylinder head.
15 Ignition coil, high tension leads and spark plugs.
16 Inlet manifold.
17 17 Thermostat and its housing.
18 Power steering pump and bracket.
19 Alternator and belt tensioner.
20 Gearbox to engine.
21 Engine to vehicle.
19 12 13 20
W72R169
82 Adjustment and replacement