Land Rover Defender V8i Workshop Supplement Rover Manual

26COOLING SYSTEM
2
REPAIR
5.Position toolLRT-12-093to hold coolant pump
pulley.
6.Loosen viscous coupling nut using tool
LRT-12-094.
7.Remove toolLRT-12-093.
8.Remove viscous coupling assembly.
Do not carry out further dismantling if component
is removed for access only.
9.Remove 4 Allen screws securing fan blades to
coupling.
10.Remove fan blades from coupling.
Refit
11.Clean mating faces of fan blades and coupling.
12.Fit fan blades to coupling and secure with Allen
screws.
13.Position coupling...

COOLING SYSTEM
3
REPAIR RADIATOR
Service repair no - 26.40.01
Remove
1.Disconnect battery negative lead.
2.Drain cooling system.
See Adjustment, drain
and refill
3.Remove 8 screws securing front grille to body.
4.Remove front grille.
5.Remove 4 bolts securing radiator top mountings
to bonnet locking panel and collect nuts.
6.Remove radiator top mountings.
7.Remove fan cowl upper mounting brackets.
8.Loosen clip and disconnect top hose from
radiator.
9.Remove 2 clips securing fan cowl to radiator....

26COOLING SYSTEM
4
REPAIR
11.Loosen clip and disconnect throttle body to
radiator hose.
12.Loosen clip and disconnect expansion tank to
radiator hose.
13.Position container beneath engine oil cooler pipe
unions.
14.Loosen engine oil cooler pipes and disconnect
from radiator.
15.Remove and discard O rings from oil cooler
pipes.
16.Plug oil cooler pipe connections.
17.Loosen clip and disconnect bottom hose from
radiator.
18.Release radiator from lower mounting rubbers
and remove radiator.Refit
19.Fit...

COOLING SYSTEM
5
REPAIR THERMOSTAT
Service repair no - 26.45.01
Remove
1.Disconnect battery negative lead.
2.Drain cooling system.
See Adjustment, drain
and refill
3.Loosen clip and disconnect radiator top hose
from coolant outlet elbow.
4.Remove 2 bolts securing coolant outlet elbow to
engine.
5.Remove coolant outlet elbow and collect gasket.
6.Remove thermostat.
Refit
7.Fit thermostat ensuring jiggle pin/vent hole is
uppermost.
8.Fit coolant outlet elbow with NEW gasket.
9.Fit and tighten bolts...

26COOLING SYSTEM
6
REPAIR
8.Noting their fitted positions, remove 9 bolts
securing coolant pump.
9.Remove coolant pump.
10.Remove and discard gasket.
Refit
11.Clean coolant pump and timing cover mating
faces.
12.Lightly grease NEW gasket and position to
timing cover.
13.Clean threads of all long bolts and coat with
Loctite 572 thread sealant.
14.Position coolant pump, fit bolts and tighten to
28
Nm (21 lbf.ft).
15.Fit coolant pump pulley, fit bolts but do not
tighten.
16.Clean auxillary drive belt pulley...

COOLING SYSTEM
1
SPECIFICATIONS, TORQUE TORQUE VALUES
Nm lbf.ft
Oil cooler pipes 30................................................................ 22
Radiator filler plug (plastic) 6............................................... 4.5
Coolant pump bolts 28.......................................................... 21
Coolant outlet elbow bolts 28................................................ 21 

30 - MANIFOLD AND EXHAUST SYSTEM
CONTENTS
Page
DESCRIPTION AND OPERATION
CATALYTIC CONVERTERS - V8i 1.......................................................................
REPAIR
INTERMEDIATE PIPE 1.........................................................................................
TAIL PIPE 1............................................................................................................
INLET MANIFOLD GASKET...

MANIFOLD AND EXHAUST SYSTEM
1
DESCRIPTION AND OPERATION CATALYTIC CONVERTERS - V8i
Description
Catalytic converters which form part of the engine
emission control system, are designed to clean the
exhaust gases, by chemically converting pollutant
elements in the exhaust to gases less harmful to the
environment.
1.Catalysts
2.Oxygen sensors
The front section of the exhaust system from each
cylinder bank contain the ceramic elements of the
catalytic converters. The oxygen sensors, which
transmit...