Page 1525 of 3229

Publi s hed: 11-May-2011
Exhaust System - TD4 2.2L Diesel -
Lubricants, Fluids, Sealers and AdhesivesItemSpecification
Heated oxygen s ens or (H02S) removal*W D40 or s uit able al ternat ive
Heated oxygen s ens or (H02S) t hreadsApply s uit able hi gh temperat ure ant i-s ei ze compound t o t hreads of s ens or* Apply to area around sensor threads prior to attempting to remove sensor
General Specification
ItemSpecificationCatal yt ic convert ers -t ype/locat ionAn oxidizi ng cat alyti c convert er is fit t ed in t he front s ect ion of t he exhaus t s ys t em
Exhaus t manifold -Locat ionA mani fold ass embly is fit ted to t he cylinder head.
Exhaus t s yst emStai nl ess st eel exhaust s ys tem s uppl ied as t wo s eparate ass embli es. Front s ecti on incorporat inga catal yt ic converter and a rear s ect ion i ncorporat ing a rear s il encer
Torque Specifications
DescriptionNmlb-ft
Catal yt ic convert er t o center s ect ion retai ning clamp4030Catal yt ic convert er t o t urbocharger hous ing retaini ng clamp107
Exhaus t manifold el bow t o EGR cool er2518
Exhaus t manifold heat s hield bol ts107Exhaus t manifold heat s hield nut s107
Exhaus t manifold retai ni ng nuts2418
Exhaus t manifold retai ni ng s tuds75Exhaus t s upport bracket s t o s ubframe / fl oor2518
Heated oxygen s ens or (H02S)++4533
+ Apply anti-seize lubricant to threads of sensor - See Lubricants
Page 1532 of 3229

Acti ve regenerati on s tart s when t he part iculat e loading of t he DPF reaches a t hres hol d as moni tored or det ermi ned by theDPF cont rol s oft ware. The t hres hol d calcul ati on is bas ed on driving s t yl e, dis tance t ravel ed and back pres sure s ignals fromt he different ial pres sure s ens or.
Acti ve regenerati on general ly occurs every 450 mil es (725 km) al though thi s is dependant on how the vehicle is driven. Forexampl e, if t he vehi cl e i s dri ven at l ow l oads i n urban t raffi c regularly, act ive regenerat ion wil l occur more often. This i sdue t o the rapid bui ld-up of parti cul at es in the DPF than i f the vehicle is driven at high s peeds when pas s ive regenerat ionwil l have occurred.
The DPF s oft ware i ncorporates a mil eage trigger which is us ed as back-up for act ive regenerat ion. If act ive regenerat ionhas not been i nit iat ed by a back pres sure s ignal from t he different ial pres s ure s ensor, regenerati on is reques t ed based ondis t ance t raveled.
Acti ve regenerati on of the DPF i s commenced when the t emperat ure of t he DPF is increas ed to the combus ti on temperat ureof the parti cl es. The DPF t emperat ure i s rai s ed by increas ing t he exhaus t gas temperat ure. This is achieved by int roduci ngpost -injecti on of fuel aft er the pi lot and main fuel inject ions have occurred.
This i s determined by t he DPF s oft ware moni toring t he s ignals from t he two DPF temperature s ens ors to es t abl is h t het emperature of the DPF. Dependi ng on t he DPF temperat ure, t he DPF s oft ware reques t s the ECM t o perform ei ther one ort wo post -injecti ons of fuel:
The fi rs t pos t-inject ion of fuel ret ards combus ti on ins ide t he cylinder which i ncreas es t he temperature of theexhaus t gas.The s econd pos t-inject ion of fuel i s inject ed lat e in the power s troke cycle. The fuel part ly combus ts in t he cylinder,but some unburnt fuel als o pass es i nto t he exhaus t where it creat es an exot hermi c event wi thi n the cat alyti cconvert er, furt her i ncreas i ng the temperat ure of t he DPF.
The act ive regenerati on proces s t akes approxi matel y 20 mi nut es t o compl ete. The first phas e increas es the DPFt emperature to 500°C (932°F). The second phas e furt her increases t he DPF t emperat ure t o 600°C (1112°F) whi ch is t heopti mum t emperat ure for parti cle combust ion. This t emperat ure i s t hen maint ai ned for 15-20 minutes to ens ure compl et eincinerat ion of t he part icles wi thi n t he DPF. The i nci nerati on process convert s the carbon parti cl es to carbon dioxide andwater.
The act ive regenerati on temperat ure of t he DPF i s clos el y monit ored by the DPF s oftware to maint ain a target t emperat ureof 600°C (1112°F) at the DPF inlet . The temperat ure cont rol ensures that t he temperat ures do not exceed the operat ionalli mit s of t he turbocharger and t he cat alyti c convert er. The t urbocharger i nlet t emperature mus t not exceed 830°C (1526°F)and t he cat alyti c convert er bri ck t emperat ure mus t not exceed 800°C (1472°F) and t he exit t emperat ure mus t remainbelow 750°C (1382°F).
Duri ng the act ive regenerat ion proces s t he fol lowing ECM cont roll ed event s occur:
The t urbocharger is maint ai ned in the full y open pos it ion. This minimizes heat t ransmi ss i on from t he exhaus t gast o the turbocharger and reduces t he rate of exhaus t gas flow al lowing opt imum heati ng of the DPF. If the driverdemands an increas e in engi ne torque, t he t urbocharger wi ll res pond by clos ing t he vanes as necess ary.The t hrott le is clos ed as t his as s is ts in i ncreas i ng the exhaust gas t emperat ure and reduces t he rat e of exhaus tgas fl ow whi ch has t he effect of reduci ng the t ime for t he DPF t o reach t he opti mum temperat ure.The Exhaus t Gas Reci rculat ion (EGR) val ve is clos ed. The use of EGR decreas es t he exhaus t gas temperat ure andt herefore prevent s t he opti mum DPF t emperat ure being achieved.
If, due t o vehi cl e us age and/or drivi ng s tyle, t he act ive regenerat ion proces s cannot t ake place or is unable to regenerat et he DPF, t he dealer can force regenerat e t he DPF. Thi s is achieved by ei ther dri vi ng the vehicl e unti l t he engine i s at it snormal operat ing t emperature and t hen drivi ng for a furt her 20 minut es at speeds of not l ess than 30 mph (48 km/h) or byconnecti ng a Land Rover approved diagnost ic s ys tem to the vehicle which wi ll guide the t echnician t hrough a regenerat ionprocedure t o clean t he DPF.
Diesel Particulate Filter Control
The DPF requires cons t ant moni toring t o ens ure t hat it i s operati ng at it s opti mum effi ci ency and does not becomeblocked. The ECM contai ns DPF s oftware whi ch controls t he moni tori ng and operati on of the DPF sys t em and als o moni torsother vehi cle dat a to det ermine regenerat ion periods and s ervice i nt ervals .
The DPF s oft ware can be di vi ded int o t hree s eparate cont rol s oftware modules ; a DPF s upervis or module, a DPF fuelmanagement modul e and a DPF ai r management module.
Thes e three modul es are controll ed by a fourth s oftware module known as the DPF co-ordinator module. The co-ordi natormodule manages t he operati on of the ot her modul es when an acti ve regenerati on is reques t ed. The DPF s upervis or moduleis a s ub-s ys t em of t he DPF co-ordi nat or module.
DPF Fuel Management Module
The DPF fuel management modul e cont rol s t he foll owing funct ions :
Timi ng and quant it y of t he four s plit i njecti ons per s t roke (pi lot , main and two post inject ions ).Inject ion press ure and the trans i ti on bet ween t he three different cali brati on levels of i nject ion.
The above funct ions are dependant on the condit ion of t he cat alyt ic converter and t he DPF.
The cont rol led i nject ion det ermi nes the required injecti on level in addit ion to measuring t he act ivi ty of t he cat alyt icconvert er and the DPF. The fuel management cal culat es t he quant it y and ti mi ng for t he four s plit i njecti ons , for each oft he three cal ibrat ion l evel s for i njecti on pres sure, and al s o manages the t rans it ion bet ween the l evel s.
The t wo post i njecti ons are requi red t o s eparate the funct ionali ty of i ncreas i ng in-cyli nder gas t emperat ures and t heproduct ion of hydrocarbons. The firs t pos t i nject ion is us ed t o generate the hi gher in-cyl inder gas temperat ure whi les imul taneous l y ret aining t he s ame engine t orque out put produced duri ng normal (non-regenerati on) engine operat ion. Thes econd pos t inject ion i s used to generat e hydrocarbons by al lowi ng unburnt fuel into the cat al yti c convert er wit houtproduci ng increas ed engine t orque.
Page 1552 of 3229
Publi s hed: 11-May-2011
Fuel Tank and Lines - I6 3.2L Petrol -
C apacitiesItemCapacity (liters/gallons)
Fuel t ank70.0/15.4
General Specification
ItemSpecification
Syst em typeERFS Electronic Ret urnles s Fuel Sys temFuel del ivery modulePAG Modul e
Fuel pump:
Maximum output @ 11.5 volt s mi n110l/hr maxOperat ing press ureVariable
Maximum operati ng pres s ure3.8 Bar max
Fuel t ank s ender unit sMagneti c Pass ive Pos it ion Sens or (MAPPS)
Torque SpecificationsDescriptionNmlb-ft
Fuel t ank bolt s*2518
Fuel t ank fi ll er pi pe lower bracket107Fuel t ank fi ll er pi pe upper bracket107
* New nuts/bolts must be fitted
Page 1579 of 3229
Publi s hed: 11-May-2011
Fuel Tank and Lines - TD4 2.2L Diesel -
C apacitiesItemCapacity (liters/gallons)
Fuel t ank68.0/14.9
General Specification
ItemSpecification
Fuel del ivery modulePAG ModuleLocat ionin the RH si de of the tank
Maximum output @12.5 vol ts160l /hr
Operat ing press ure0.2 BarFuel t ank s ender unit sMAgnet ic Pas s ive Pos it ion Sensor (MAPPS)
Torque Specifications
DescriptionNmlb-ft
Degas nipple1511Fuel fil ter brackets2518
Fuel fil ter cover nut s97
Fuel fil ter t o ret aini ng bracket bolt97Fuel press ure pipe t o block107
Fuel pump bol ts2216
Fuel t ank bolt s*2518Fuel t ank fi ll er pi pe bracket s107
* New nuts/bolts must be fitted
Page 1611 of 3229
Publi s hed: 11-May-2011
Speed Control - I6 3.2L Petrol -
Torque SpecificationsDescriptionNmlb-ft
Accel erator pedal as s embly nut s107
Speed cont rol s wit ch Torx bolt s32
Page 1622 of 3229
Publi s hed: 11-May-2011
Speed Control - TD4 2.2L Diesel -
Torque SpecificationsDescriptionNmlb-ft
Accel erator pedal as s embly nut s107
Page 1632 of 3229
Publi s hed: 11-May-2011
Climate Control -
Torque SpecificationsDescriptionNmlb-ft
A/C compres sor refridgerant li ne connect ions2418
A/C condens er refridgerant li ne connecti ons107Compres s or lower s upport bracket - 3.2 Pet rol2518
Compressor upper support bracket - 3.2 Petrol:
M104533M82518
M6107
Compres s or mount ing bol ts - Al l engi nes25Condens er core bolt s107
Heater core and evaporat or core hous ing bol ts76
Heater housi ng t o bulkhead Torx bolt s76Pres s ure t rans ducer86
Thermos t at ic expansi on valve bolt s43
Thermos t at ic expansi on valve nut97
Page 1738 of 3229
Publi s hed: 11-May-2011
Auxiliary Climate Control -
Torque SpecificationsDescriptionNmlb-ft
Electric boos ter heater Torx screws21
Fuel fired boost er heat er bol ts107Feul fired boost er heat er fuel pump bolt s107