Workshop Manuals Factory service & repair Land Rover
01 Discovery Series II - Workshop Manual - 1999MY ON - 6th Edition - NAS02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 INTRODUCTION32 33 GENERAL INFORMATION34 35 GENERAL DATA36 IDENTIFICATION NUMBERS37 38 TORQUE WRENCH SETTINGS39 40 LIFTING AND TOWING41 CAPACITIES, FLUIDS, LUBRICANTS AND SEALANTS42 43 44 MAINTENANCE45 46 ENGINE - V847 48 EMISSION CONTROL - V849 50 ENGINE MANAGEMENT SYSTEM - V851 FUEL DELIVERY SYSTEM - V852 53 COOLING SYSTEM - V854 55 MANIFOLDS AND EXHAUST SYSTEMS - V856 57 58 59 CLUTCH - V860 61 MANUAL GEARBOX - R38062 63 TRANSFER BOX - LT230SE64 65 66 AUTOMATIC GEARBOX - ZF4HP22 - 2467 PROPELLER SHAFTS68 69 REAR AXLE70 71 72 73 74 75 FRONT AXLE76 77 78 79 STEERING80 FRONT SUSPENSION81 82 83 REAR SUSPENSION84 85 86 87 BRAKES88 RESTRAINT SYSTEMS89 90 DOORS91 EXTERIOR FITTINGS92 93 INTERIOR TRIM COMPONENTS94 SCREENS95 96 97 SEATS98 99 SUNROOF100 CHASSIS AND BODY DIMENSIONS101 102 103 104 PANEL REPAIRS105 106 107 108 BODY SEALING MATERIALS109 110 111 112 113 CORROSION PREVENTION AND SEALING114 PAINTING115 HEATING AND VENTILATION116 117 AIR CONDITIONING118 119 WIPERS AND WASHERS120 CHARGING AND STARTING121 122 LIGHTING123 BODY CONTROL UNIT124 125 126 ALARM SYSTEM AND HORN127 128 WINDOWS129 IN CAR ENTERTAINMENT130 HARNESSES131 DRIVING AIDS132 NAVIGATION SYSTEM133 INSTRUMENTS
Land Rover Discovery II46 · ENGINE - V8
46 · Engine

Piston assemblies (page 3 of 5)

Make
Land Rover
Model
Discovery II
Section
OVERHAUL
ENGINE - V8Piston assemblies · page 3 of 5
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ENGINE - V8

OVERHAUL 12-2-69

9. Check overall dimensions of  gudgeon pin.  

Gudgeon pins are only supplied as an  
assembly with replacement pistons.

l

Gudgeon pin length = 60.00 to 60.50 mm 
(2.362 to 2.382 in).

l

Gudgeon pin diameter = 23.995 to 24.00 
mm (0.9446 to 0.9448 in)

10. Measure cylinder bore wear  and ovality in two 

axis 40 to 50 mm (1.6 to 2 in) from  top of bore.  
The temperature of piston and cylinder  
block must be the same to ensure accurate  
measurement. Do not attempt to de-glaze 
cylinder bores.
 

l

Grade 'A' pistons: Cylinder bore = 94.00 to 
94.015 mm  (3.7007 to 3.7013 in).

l

Grade 'B' pistons: Cylinder bore = 94.016 to 
94.030 mm (3.7014 to 3.7019 in).

l

Maximum ovality = 0.013 mm (0.0005 in). 

11. Check alignment of connecting rods. 

Reassembly

1. Pistons have a 5 mm (0.2 in) offset gudgeon pin  

which can be identified by an arrow mark on  
the piston crown. This arrow must always  point 
towards the front of the engine. 

2. Assemble pistons to connecting rods with  

arrow on piston pointing towards domed  
shaped boss on connecting rod for RH bank  of 
cylinders and arrow pointing away from  domed 
shaped boss for LH bank of cylinders. 

3. Clamp hexagon body of tool LRT-12-013  in 

vice. 

4. Screw large nut back until flush with end of 

centre screw. 

5. Locate remover/replacer adapter LRT-12-126/

2  with its long spigot inside bore of hexagon 
body. 

6. Fit parallel sleeve, part of tool LRT-12-013, 

ensuring that grooved end is towards open end 
of tool LRT-12-013. Position sleeve up to 
shoulder of centre screw.

7. Lubricate gudgeon pin and bores of  connecting 

rod and piston with graphite  oil. 

8. Locate connecting rod and piston to centre 

screw with connecting rod entered on parallel 
sleeve, part of LRT-12-013 up to the machined 
groove on the sleeve. 

Parts & tools for this job For Land Rover Discovery

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