2006 LAND ROVER FRELANDER 2 radiator cap

If the pres s ure drops, check the complet e cool ing s ys tem for l eaks . Als o refer to engi ne s ys t em checks i f aleak cannot be locat ed in the cooli ng s ys t em. Correct any leaks found and recheck t he s ys t em.
7. Release the s ys tem pres s ure and remove the press ure tes t equipment. Check the coolant level. Replenis h asnecess ary wit h t he correct cool ant s olut ion.REFER t o: Specificati ons (303-03A Engine Cooli ng - I6 3.2L Pet rol, Specifi cat ions ).
7.
8. Check t he radi at or overfl ow hos e for any obs truct ions which may block the flow of coolant eit her to or from t hecoolant expans ion t ank.8.
9. Conduct the coolant expans ion t ank pres s ure cap pres s ure t es t in t his secti on.9.
Coolant Expansion Tank Pressure Cap Pressure Test
W ARNING: Never, under any ci rcums tances, remove the coolant expans ion tank pres s ure cap whi le t he engine i soperati ng. To avoid havi ng s caldi ng hot water or s team bl ow out of the cooli ng s ys t em, use ext reme care when removi ngt he coolant expans ion tank pres s ure cap from a hot cool ing s ys tem. W ai t unti l the engine has cooled, then wrap a t hickcloth around t he coolant expans ion tank pres s ure cap and t urn it s lowl y unt il t he pres s ure begins t o releas e, s t ep backwhil e t he pres sure i s rel eas ed from the s ys tem. W hen certai n all t he pres s ure has been rel eas ed (s ti ll wit h a cl oth) t urnand remove t he coolant expans ion t ank pres sure cap. Fail ure t o follow thes e i ns t ructi ons may res ult i n damage t o t hecool ing s ys tem, engine and/or cause pers onal injury.
1. Remove the expansi on tank press ure cap from t he cool ant expans i on tank.1.
2. Us e water t o clean cap in area of rubber s eal and vacuum rel ief valve. Fol lowing manufact urers ins truct ions ,i nst all t he cool ant expans i on tank pres s ure cap t o t he pres s ure t es ter.2.
• NOTE: If the press ure tes ter i s pres s uris ed t oo quickly, an erroneous pres s ure readi ng may resul t.
3. Slowly pres suris e t he s ys t em unt il the pres sure gauge reading s t ops i ncreasi ng, and not e highest press urereadi ng obtained.
3.
4. Release pres sure and repeat Step 3 at leas t twi ce to make s ure t he pres s ure t es t reading i s repeatable andwi thi n s peci ficat ion.4.
5. If t he pres s ure t es t gauge readi ngs are not wi thin s pecificati on, i nst all a new coolant expans ion tank pres s urecap.5.
Thermostat Test
Remove the thermos t atREFER to: Thermos t at (303-03A Engine Cooli ng - I6 3.2L Pet rol, Removal and Ins tal lat ion).Ins pect for vis ible damage, note it s openi ng t emperature and immers e i t in wat er. Heat t he water unti l thi s temperat ure isreached. The t hermos tat s hould begin to open. If i t does not begin to open, ins t al l a new t hermos tat .REFER to: Thermos t at (303-03A Engine Cooli ng - I6 3.2L Pet rol, Removal and Ins tal lat ion).If thermos t at begi ns to open, cont inue t o heat the wat er unt il t he t hermos tat fully opens , 5.8 mm (0.2 in) or more off t hes eat . If it does not full y open, i nst all a new thermos t at.REFER to: Thermos t at (303-03A Engine Cooli ng - I6 3.2L Pet rol, Removal and Ins tal lat ion).
Radiator Leak Test - Removed from the Vehicle
CAUTION: Do not l eak tes t an alumi nium radiat or i n t he s ame wat er t hat is us ed t o leak t es t copper/bras s radiat ors .Flux and caust ic cl eaners may be pres ent in the t est wat er which wi ll corrode al umini um. If a separat e t ank is notavai lable, drai n and rins e the tes t tank before t est ing an alumini um radi ator.
Clean t he radi at or before leak t es t ing t o prevent cont aminat ion of t he tes t t ank. Leak tes t t he radiat or in clean wat er wit h138 kPa (20 ps i ) air pres s ure.

Publi s hed: 11-May-2011
Engine Cooling - TD4 2.2L Diesel -
Lubricants, Fluids, Sealers and AdhesivesItemSpecification
Anti -freezeTexaco Ext ended Li fe Coolant (XLC) or any glycol bas ed anti -freezecontaini ng no met hanol wit h only Organic Acid Technology (O AT) corrosi oni nhi bit ors
Anti -freeze concentrati on - W i ll provi de frostprot ect ion to -40°C (-40°F)50%
Speci fi c gravit y of cool ant at 20°C (68°F), t oprot ect agains t fros t down to -40°C (-40°F)1.068
Amount of anti-freeze to use for 50%concentration:4.25 li ters
C apacitiesItemCapacity (liters/pints/US quarts)
Cooli ng sys t em capacit y8.5/15.0/9.0
General Specification
ItemSpecificationCoolant pump21.5 li ter/mi n : 2.8 bar
Cooli ng fan750W /600W
Cooli ng sys t em t ypePress uri s ed, t hermos tat icall y cont roll ed wi th remote header t ankExpans ion tankSeeber wit h int egrated level s ensor
Pres s ure cap rati ng145 kPa (21lb/i n²)
Radiat orVal eo 28mm core wit h i nt egrat ed drain cock and repl aceable l ower pi nThermos t atW ax element
St arts to open83°C (181°F)
Full y open91°C (200°C)
Torque Specifications
DescriptionNmlb-ftA/C condens er t o radiator107
Automat ic trans mi ss i on fl uid cooler66
Coolant manifold t o t hermos tat hous ing pipe.86Coolant expans ion t ank bol t107
Coolant pump bolt s1713
Cyli nder block s ealing pl ug4231Radiat or bolt s65
Radiat or drain pl ug76
Thermos t at hous ing bolt s86W iri ng harnes s s upport bracket .86

Entrained gases i n t he cool ing s ys tem escape t hrough the t hermal control modul e degas l ine t o t he cool ant res ervoir.
The increas ing coolant temperature is felt at t he t hermos tat , and is regi s tered on the ins trument cl us t er coolantt emperature gage vi a t he ECM and ECT s ens or s i gnal.For addit ional informat ion, refer t o: Ins t rument Clus ter (413-01 Inst rument Cl us t er, Des cript ion and Operat ion).
Engine Normal Operating Temperature
W i th the coolant t emperature increas ing, at 83°C (181°F) t he t hermos tat reacts and commences openi ng. The by-pas svalve is progres s ively clos ed. Hot coolant ret urning from t he engi ne t o t he thermal control modul e i s now all owed to pas st hrough the t op hos e connecti on to the radiator. The fl ow of hot coolant t o t he radiat or now forces cold cool ant wi thi n t heradi at or and bot t om hos e t o fl ow t o t he thermal cont rol module.
Duri ng the thermos t at opening period t here i s an i nit ial temperat ure di fferenti al of t he coolant at bot h s ides of t het hermos tat . The thermos t at react s t o t he t emperature different ial and part iall y closes , whi le t he by-pas s val ve opensfurther. The thermos t at and by-pas s valve conti nue to oscil lat e whil e t he cool ant t emperat ure i ncreas es .
At a coolant temperat ure of 91°C (196°F) t he thermost at is full y opened and t he by-pas s valve i s ful ly clos ed. The returncool ant from t he engi ne is now ful ly circul ated t hrough t he radiat or and bot tom hose. Coolant flows t hrough the radiat orfrom the RH tank t o t he LH t ank, and i s cool ed by air pass i ng through the mat ri x. Ent rai ned gas es i n the radiat or es capet hrough the connect ed degas l ine t o t he cool ant res ervoir.
The increas ed cool ant volume created by heat expans ion caus es the coolant level to ri se through t he connecti ng res ervoirhose, and i nt o t he res ervoi r.
The t emperature of the cooli ng s ys t em i s cons t ant ly moni tored by t he ECM via the ECT s ens or s i gnal. The ECM uses t heECT s ignal to control operati on of the cooling fans , and to adjus t engine fueling. The ECM al so operates t he fans i nres ponse to input s from the aut omati c t ransmis s ion oil t emperat ure s ensor, Air Condit ioning (A/C) s ys tem cont rol s wit ch,and t he A/C pres sure s ens or. For addit ional i nformati on, refer to: El ect ronic Engine Cont rols - 2.2L Di es el (303-14Electroni c Engine Controls - 2.2L Dies el, Des cript ion and Operat ion).For addit ional informat ion, refer t o: Air Condit ioning (412-01 Cli mat e Cont rol , Descripti on and Operat ion).
The cool ing fan s peed is als o infl uenced by vehicle road s peed. The ECM adjus t s the speed of t he cool ing fans tocompens ate for t he ram air effect , us ing t he CAN bus road speed s ignal received from the Ant i-Lock Brake Sys tem (ABS)module.
W hen t he engine i s s hut down, t he coolant t emperature and volume decreas e. The thermos t at st art s t o clos e as t hecool ant t emperat ure decreas es to 89°C (192°F), and is fully cl osed at 81°C (178°F). The coolant level wit hin t he res ervoi rdecreas es as coolant is drawn from the res ervoi r to replenis h the s ys tem.
Followi ng engi ne s hut down when the coolant pump i s s tat ionary, the ECM may cont inue t o operat e t he cool ing fans for apre-det ermined peri od to maint ai n engine cooling.

1. Remove the expansi on tank press ure cap from t he cool ant expans i on tank.1.
2.
Us e water t o clean cap in area of rubber s eal and vacuum rel ief valve. Fol lowing man ufact urers ins truct ions ,
i nst all t he cool ant expans i on tank pres s ure cap t o t he pres s ure t es ter.
2.
• NOTE: If the press ure tes ter i s pres s uris ed t oo quickly, an erroneous pres s ure rea di ng may resul t.
3. Slowly pres suris e t he s ys t em unt il the pres sure gauge reading s t ops i ncreasi ng, and not e highest press ure
readi ng obtained.
3.
4. Release pres sure and repeat Step 3 at leas t twi ce to make s ure t he pres s ure t es t rea ding i s repeatable and
wi thi n s peci ficat ion.
4.
5. If t he pres s ure t es t gauge readi ngs are not wi thin s pecificati on, i nst all a new cool ant expans ion tank pres s ure
cap.
5.
Thermostat Test
Remove the thermos t at
REFER to: Thermos t at (303-03B Engine Cooli ng - TD4 2.2L Dies el , Removal and Inst all at ion).
Ins pect for vis ible damage, note it s openi ng t emperature and immers e i t in wat er. He at t he water unti l thi s temperat ure is
reached. The t hermos tat s hould begin to open. If i t does not begin to open, ins t al l a new t hermos tat .
REFER to: Thermos t at (303-03B Engine Cooli ng - TD4 2.2L Dies el , Removal and Inst all at ion).
If thermos t at begi ns to open, cont inue t o heat the wat er unt il t he t hermos tat fully opens , 5.8 mm (0.2 in) or more off t he
s eat . If it does not full y open, i nst all a new thermos t at.
REFER to: Thermos t at (303-03B Engine Cooli ng - TD4 2.2L Dies el , Removal and Inst all at ion).
Radiator Leak Test - Removed from the Vehicle CAUTION: Do not l eak tes t an alumi nium radiat or i n t he s ame wat er t hat is us ed t o le
ak t es t copper/bras s radiat ors .
Flux and caust ic cl eaners may be pres ent in the t est wat er which wi ll corrode al umin i um. If a separat e t ank is not
avai lable, drai n and rins e the tes t tank before t est ing an alumini um radi ator.
Clean t he radi at or before leak t es t ing t o prevent cont aminat ion of t he tes t t ank. Le ak tes t t he radiat or in clean wat er wit h
138 kPa (20 ps i ) air pres s ure.

Maintenance
164
L
If the level has fallen appreciably, suspect
leakage or overheatin g and arrange for the
vehicle to be exam ined by a qualified
technician.
Topping up the coolant
Top-up to the upper le vel indicator mark
located on the side of the expansion tank. Use
only a 50% mix of water and Texaco XLC
antifreeze.
Note: In an emergency - and only if the
approved antifreeze is unavailable - top-up the
cooling system with clea n water, but be aware
of the resultant reduction in frost protection.
Do not top-up or refill with conventional
antifreeze formulations. If in doubt consult a
qualified technician.
Ensure the cap is tightened fully after top-up is
completed by turning the cap until the ratchet
cap clicks. Antifreeze
Antifreeze contains important corrosion
inhibitors. The antifreeze content of the coolant
must be maintained at 50% ± 5% all year round
(not just in cold conditions). To ensure that the
anti-corrosion properties of the coolant are
retained, the antifreeze content should be
checked once a year and completely renewed
every ten years, regardless of distance
travelled. Failure to do so may cause corrosion
of the radiator and engine components.
The specific gravity of a 50% antifreeze
solution at 20°C (68°F) is 1.068 and protects
against frost down to -40°C (-40°F).
WARNINGS
Never remove the filler cap when the
engine is hot - escaping steam or
scalding water could ca use serious personal
injury.
Avoid spilling antifreeze onto a hot
engine - a fire may result.
Unscrew the filler cap slowly, allowing
the pressure to escape before removing
completely.
CAUTION
When travelling in territories where the
water supply contains salt, always
ensure you carry a supply of fresh (rain or
distilled) water. Topping up with salt water will
cause serious engine damage.
WARNINGS
Antifreeze is poisonous and can be fatal
if swallowed - keep containers sealed
and out of the reach of children. If accidental
consumption is suspec ted, seek medical
attention immediately.
If the fluid comes into contact with the
skin or eyes, rinse immediately with
plenty of water.
CAUTIONS
The use of non-approved antifreeze will
have an adverse ef fect on the engine
cooling system and therefore engine
durability.
Antifreeze will damage painted surfaces;
soak up any spillage with an absorbent
cloth immediately and wash the area with a
mixture of car shampoo and water.