2006 LAND ROVER FRELANDER 2 Repair Manual

immobilizer power steering fluid air bleeding compression ratio alternator change language

Load previous 8 pages

Page 617 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual The chill cas t cylinder head is of t he cros s-flow t ype, manufact ured from a light-alloy met al. Deep-s eat ed bolt s, to reducedis tortion, s ecure t he cylinder head t o t he cylinder block. Two

Page 618 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription1-O il s eparat ion housingCrankcas e gas es are rout ed from t he crankcas e, engine block and cylinder head t o t he oil s eparat ion hous ing locat ed on t hecams haft co

Page 619 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription1-Cams haft hous ing2-Cylinder headThe chill cas t cams haft hous ing is manufact ured from a light-alloy met al and act s as a combined valve cover and cams haft bearing

Page 620 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual 2-Exhaust camshaft3-Exhaust camshaft slot below cent re line4-Inlet camshaft slot above cent re lineThe cams hafts are of a hollow st eel t ube cons t ruction, drilled t o s ave weight . Each

2-Exhaust camshaft3-Exhaust camshaft slot below cent re line4-Inlet camshaft slot above cent re lineThe cams hafts are of a hollow st eel t ube cons t ruction, drilled t o s ave weight . Each camshaft is ret ained in t he cylinder head bythe cams haft hous ing. The int ake cams haft is equipped wit h a VCT unit and also drives the vacuum pump.
The intake camshaft has cam lobes wit h different profiles. One for a small lift ing height of 3.6 mm, and 1 for larger lift ing heightof 10.0 mm. The t ransit ion bet ween t he lift ing height s is cont rolled via the Cams haft Profile Swit ching (CPS) funct ion.
The exhaus t cams haft is convent ional, i.e. only has a lifting height of 10.0 mm.
Intake and Exhaust Valve Assemblies
ItemPart NumberDescription1-Valve s pring s eat (24 off)2-Valve s t em s eal (24 off)3-Valve s pring (12 off int ake, 12 off exhaus t )4-Valve s pring ret ainer (24 off)5-Valve s pring collets (48 off)6-Intake camshaft7-Hydraulic t appet , inner8-Tappet , outer9-Cam lobe, central (s maller lift ing height)10-Locking pin, out er11-Locking pin, inner12-Ret urn s pring, outer tappet13-O il inlet14-Cam lobes , outer (great er lift ing height )The cylinder head incorporat es 2 overhead camshaft s operating 4 valves per cylinder via hydraulic t appet s for the intake camshaftand mechanical t appets for the exhaust cams haft .
Camshaft Profile Sw itching
CPS is a sys tem where t he int ake valves , at engine s peeds up to approximat ely 3000 rpm, have a s mall lifting height of 3.6 mm,and at s peeds above approximat ely 3000 rpm, have a great er lift ing height of 10.0 mm. CPS, in combinat ion wit h t he VCT funct ionmakes it poss ible to cont rol t he cylinders' incoming air quant it y in s uch a way that t he Electronic Throt t le Act uat or (ETA) can befully open. A fully open ETA, during operat ion, reduces t he pump los s es cons iderably compared wit h when the amount of int ake airis controlled by t he ETA its elf. Reduced pump los s es , in turn, cause a reduction in fuel consumpt ion.

Page 621 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription1-O ut er t appet2-Locking pin, outer3-Inner t appet4-Locking pin wit h s pring, inner5-O il inlet , hydraulic valve adjus tment6-Hydraulic valve adjus tment unit7-Return s

Page 622 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual The intake camshaft is equipped wit h 3 lobes for each valve. One cent rally locat ed wit h a small lift ing height of 3.6 mm, and 2out er lobes wit h great er (s ame) lifting height s of 10.0 mm

Page 623 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual One s olenoid cont rols t he valves for cylinders 1, 2 and 4 whils t t he other cont rols t he valves for cylinders 3, 5 and 6. The solenoidstherefore cont rol 6 valves each (when t he engine ha

Page 624 of 3229

LAND ROVER FRELANDER 2 2006 Repair Manual ItemPart NumberDescription1-CPS s olenoid valve (x 2)2-Oil circuit , t appet CPS funct ion3-Calibrated pass age (choke)4-To bearing, exhaus t cams haft5-Tensioner, cams haft chain6-Noz zle, cams haft

ItemPart NumberDescription1-CPS s olenoid valve (x 2)2-Oil circuit , t appet CPS funct ion3-Calibrated pass age (choke)4-To bearing, exhaus t cams haft5-Tensioner, cams haft chain6-Noz zle, cams haft chain lubricat ion7-Oil circuit , hydraulic adjus ting valve clearance8-Vacuum pump9-VCT unit10-Oil inlet , rear11-Ret urn12-To bearing, int ake cams haft13-To front bearing, intake camshaft14-Ret urn15-Oil inlet , front16-BleedingThe oil inlet , locat ed on the front edge of t he cylinder, s upplies oil t o t he following:
The hydraulic t appet sThe vacuum pumpThe noz zle for cam chain lubricat ionThe int ake cams haft 's front bearingThe electro-hydraulic CPS s olenoid valves , front and rearThe t appet s with CPS funct ion
There is a bleed valve (16) in t he duct for t he rear elect ro-hydraulic s olenoid valves .
The duct is als o equipped wit h 2 calibrat ed pas sages (3) t o each tappet circuit (2) (i.e. the circuits aft er t he CPS s olenoid valves ).A cont inuous flow through t he circuit ens ures t he neces s ary s t able pres sure differences that are neces s ary for a st able trans ferbet ween the s mall and large t appet (or vice vers a).
• NOTE: In t he event of a s mall lifting height , the t appet circuit , in principle, has no pres s ure when the CPS valves are open, whichproduces a ret urn flow t o t he oil pan.
A filt er is locat ed in each pass age.
The oil inlet , locat ed on the rear edge of t he cylinder, s upplies oil t o the following:
The camshaft chain's hydraulic t ens ionerThe int ake cams haft VCT unitThe int ake cams haft 's bearingsThe exhaus t cams haft's bearings
To switch from low lift t o high lift and vice vers a as s moot hly as pos sible, t he trans fer is only permitt ed when cert ain condit ionsare complet ed. Thes e are:
That the oil t emperature is above +40°C (104°F). Calculat ed int ernally in the ECM, from, amongst ot her t hings , t he coolantt emperatureO ccasionally t he volumetric efficiency is t he s ame for low and high lift , which means t hat the air requirement is wit hin arange where it can be managed init ially by VCT cont rol. This is t o achieve as soft a trans fer as pos sible.It is pos sible t o adjust ignition t iming t o prevent t orque peaks during CPS cont rol

Load next 8 pages

Page: < prev 1-10 ... 585-592 593-600 601-608 609-616 617-624 625-632 633-640 641-648 649-656 ... 3232 next >

remove seats oil infotainment windshield wipers battery capacity height