2006 LAND ROVER FRELANDER 2 Repair Manual

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Page 785 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Exhaus t cams haft2-Intake cams haft
3-No. 3 bearing (end-fl oat control)
4-Si ngl e row t imi ng chai n5-Exhaus t cams haft pull ey
The int ake and exhaus t cams haft

ItemPart NumberDescription
1-Exhaus t cams haft2-Intake cams haft
3-No. 3 bearing (end-fl oat control)
4-Si ngl e row t imi ng chai n5-Exhaus t cams haft pull ey
The int ake and exhaus t cams haft s are manufactured from cast -iron. The 2 cams haft s are mount ed between the s t ructuralcamshaft cover and cyl inder head, wit h each camshaft locat ed i n 5 machined beari ng hous i ngs . Shel l bearings are not us edin the beari ng housi ngs , t he camshafts run direct ly in t he alumi num beari ng. Lateral movement of t he camshaft s i scont rol led by No. 3 cams haft beari ng, and i s not adjust able. The bearing is manufactured on both camshaft s t o provi de thecorrect end-float.
• NOTE: In product ion, t he camshaft end-fl oat i s 0.070 mm t o 0.168 mm (0.003 in t o 0.007 in). In s ervi ce, if t he end-floatis out of s peci fi cat ion t he cams haft(s ) and/or cyli nder head and s t ructural cams haft cover may requi re renewal.
Each cams haft has 8 machi ned lobes formed in pai rs al ong the length of t he cams haft. The cams haft lobes operat e t heinl et and exhaust valves t hrough hydraulic las h adjus ters and rol ler-t ype finger levers
A s pur gear wi th 19 teet h is formed on t he front end of each cams haft. The 2 gears are joined by a 40-li nk s ingle rowt imi ng chai n. The 2 cams haft gears are marked wit h a ti ming mark t hat coi ncides wi th the 2 col ored l inks on t he camshaftt imi ng chai n. A dri ve sl ot is formed in t he rear end of each camshaft to provi de t he drive to t he flange mounted vacuumpump and high-pres sure fuel pump. The vacuum pump is driven by t he inl et cams haft ; the hi gh-pres s ure fuel pump isdri ven by the exhaust cams haft .
The exhaus t camshaft is driven by t he cranks haft drive gear vi a a toothed t iming belt . The exhaus t camshaft pul leycont ains 42 t eeth and is keyed and bol ted to t he front of the exhaust cams haft . The int ake cams haft i s dri ven by theexhaus t camshaft vi a t he s ingle row chain.
The exhaus t camshaft pul ley i s manufactured wit h cut-out s and a not ch in the center hub. The cut -out s form t he t argetarea for the CMP s ens or. The not ch provides the locat ion for a cams haft t imi ng pin speci al tool. The s peci al tool is us ed i nconjunct ion wi th other s pecial t ool s t o s et the exhaus t cams haft duri ng engi ne ti ming.
For furt her det ail s on s ett ing t he engine valve t imi ng, refer t o t he rel evant Service Repair Procedures (SRP) manual.
Engi ne Valve Ti ming
The valve t imi ng val ues are s hown i n t he fol lowing t able:
ValvePositionInlet val ve opens15 degrees BTDC
Inlet val ve clos es12 degrees ABDC
Exhaus t valve opens23 degrees BBDCExhaus t valve clos es17 degrees ATDC
Key:
BTDC = Before Top Dead Cent erABDC = Aft er Bot t om Dead CenterBBDC = Before Bot t om Dead CenterATDC = Aft er Top Dead Cent er.
Camshaft Position (CMP) Sensor

Page 786 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
A-Rear vi ew of exhaus t camshaft pul ley1-CMP s ensor
2-CMP t arget area
3-Cams haft pulley key s l ot4-Cams haft t imi ng pin l ocat ion
The CMP s ensor i s mounted at t

Page 787 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Lower s pring gui de2-Val ve spring
3-Upper s pring gui de
4-Spli t t aper collet s5-Intake valve
6-Exhaus t valve
The cyl inder head incorporates 2 overhead cams haft s

Page 788 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Hydrauli c las h adjus t er
2-Roll er fi nger rockerThe 16 valves are operat ed wi th roll er-type finger rockers and hydraulic las h adjus ters, actuat ed by the cams haf

Page 789 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual 6-Hydraul ic l ash adjust er
7-Pl unger s pri ng
8-High-pres s ure chamber9-Bal l val ve
10-Pl unger
11-Res ervoir chamber12-Oil pass age
13-Hydraul ic l ash adjust er body
14-Pl unger capMovement o

6-Hydraul ic l ash adjust er
7-Pl unger s pri ng
8-High-pres s ure chamber9-Bal l val ve
10-Pl unger
11-Res ervoir chamber12-Oil pass age
13-Hydraul ic l ash adjust er body
14-Pl unger capMovement of t he cams haft lobe pres s es down on t he fi nger rocker rol ler, and cons equentl y, t he hydrauli c las h adjus ter andvalve mechani sm are forced down together. The res pecti ve valve is forced down against valve s pri ng pres sure, and thehydraulic pl unger i s als o forced int o an oil chamber in t he cyl inder head. This t ype of val ve act uati on mini mizes fri ct ionbetween t he valve operat ing component s, and al so eliminates t he requi rement for manual adjust ment .
The body of the hydrauli c las h adjus t er contai ns a plunger, and 2 chambers for oil feed and press uri zed oil. Thepres s urized oi l i s s uppl ied t o t he las h adjus t er vi a t he cyl inder head oi l gal lery, and t hrough a hole in t he s ide of t he las hadjus ter body. The oi l pas s es int o a feed chamber wi thin the l ash adjus ter, and t hen t hrough to a s eparate press urechamber via a one-way ball valve.
Oil flow from t he pres s ure chamber is det ermi ned by the clearance bet ween the l ash adjust er outer body and the centerplunger. Oi l es capes up the s i de of the pl unger each ti me t he las h adjus t er i s operated. The downward press ure on t heplunger forces a corres ponding amount of oil i n the las h adjus ter body to be dis placed.
As t he camshaft lobe rot ates furt her, downward press ure on the cams haft and finger rocker i s removed. The las h adjus t erplunger is forced up by t he oil pres s ure contai ned in t he pres s ure chamber. The press ure i s not s uffi cient to affect valveoperati on, but i s s uffi cient to el iminate the clearance between the finger rocker and t op of the val ve st em.
Cylinder Head Cover
ItemPart NumberDescription
1-PCV valve2-Crankcas e venti lat ion hos e connecti on
3-Engi ne cover fixing
4-CMP s ensor l ocat ionThe 'L' s haped cyli nder head cover is ins tall ed over t he s t ructural cams haft cover and encl oses t he exhaus t cams haft, andt he int ake and exhaust cams haft dri ve openi ngs . A preformed gasket and t he PCV component O-ri ngs provi de t he sealbetween t he 2 covers .
The cyl inder head cover is manufact ured from compos it e mat eri al s , and incorporates the Pos it ive Crankcase Vent il at ionValve (PCV), s afet y val ve and crankcas e vent il ati on connecti ons .For addit ional informat ion, refer t o: Engi ne Emis s ion Cont rol (303-08B Engi ne Emis s ion Cont rol - TD4 2.2L Di esel ,Des cript ion and Operat ion).
The cyl inder head cover provides the locat ion for the CMP s ens or, and 3 of the acoust ic engine cover fi xi ngs .
Thermal Control Module

Page 790 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Thermal control modul e2-Securi ng bol t (2 off)
3-Securi ng s tud and nut (2 off)
The cool ing s ys tem thermal control modul e i s s ecured to t he rear of t he cyl ind

Page 791 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-Connecti on t o brake boost er2-Vacuum pump
3-Connecti on t o port de-act ivati on val ve
The vacuum pump is mount ed wi th 3 bol ts to the rear LH s ide of t he cyl in

Page 792 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription
1-High-press ure fuel pump2-Bol t (3 off)
The high-press ure fuel pump i s mounted wi th 3 bolt s t o the rear RH s ide of t he cylinder head, and i s dri ven by the exhaus

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