2006 TOYOTA RAV4 2gr

ENGINE - 2GR-FE ENGINE
285EG16
Oil Pan No. 1
Oil Filter Case Oil Pan No. 2EG-79
10. Oil Pan
The oil pan No. 1 is made of aluminum alloy.
The oil pan No. 2 is made of steel.
The oil pan No. 1 is secured to the cylinder block and the transmission housing and is increasing rigidity.
The oil filter case is integrated with the oil pan No. 1.

ENGINE - 2GR-FE ENGINE
285EG18
Secondary
Timing
ChainExhaust Camshaft Intake CamshaftsExhaust Camshaft
Roller Rocker Arm
Va l v e S p r i n g
Retainer
Va l v e S p r i n g
Hydraulic
Lash Adjuster
Va l v e G u i d e
Bush Va l v e S p r i n g
Sheet
Va l v e
Secondary Timing
Chain Primary
Timing
Chain EG-80
VA LV E M E C H A N I S M
1. General
Each cylinder of this engine has 2 intake valves and 2 exhaust valves. Intake and exhaust efficiency is
increased due to the larger total port areas.
This engine uses roller rocker arms with built-in needle bearings. This reduces the friction that occurs
between the cams and the areas (roller rocker arms) that push the valves down, thus improving fuel
economy.
A hydraulic lash adjuster, which maintains a constant zero valve clearance through the use of oil pressure
and spring force, is used.
The intake camshafts are driven by the crankshaft via the primary timing chain. The exhaust camshafts
are driven by the intake camshaft of the respective bank via the secondary timing chain.
This engine uses a Dual VVT-i (Variable Valve Timing-intelligent) system which controls the intake and
exhaust camshafts to provide optimal valve timing according to driving conditions. With this adoption,
lower fuel consumption, higher engine performance, and fewer exhaust emissions have been achieved.
For details of Dual VVT-i control, see page EG-120.

ENGINE - 2GR-FE ENGINE
285EG19
VVT-i
ControllerNo. 2 Camshaft
(Exhaust)
Timing
Rotor
VVT-i ControllerNo. 1 Camshaft
(Intake)
No. 3 Camshaft
(Intake)
Timing
Rotor
VVT-i Controller
VVT-i ControllerNo. 4 Camshaft
(Exhaust)Indented R portion
of cam (Profile)
Cam with indented REG-81
2. Camshaft
The camshafts are made of cast iron alloy.
An oil passage is provided on the intake and exhaust camshafts in order to supply engine oil to the VVT-i
system.
A VVT-i controller has been installed on the front of the intake and exhaust camshafts to vary the timing
of the intake and exhaust valves.
Together with the use of the roller rocker arm, the cam profile has been designed with an indented R
(radius). This results in increased valve lift when the valve begins to open and finishes closing, helping
to achieve enhanced output performance.

ENGINE - 2GR-FE ENGINE
285EG20
Secondary Chain Tensioner
Primary Chain TensionerSecondary
Timing Chain
Idle Sprocket Secondary Chain
Te n s i o n e r
Secondary
Timing Chain Secondary Chain
Te n s i o n e r
Chain Damper
Timing Chain Oil Jet
Primary Timing Chain Chain
Slipper Ball
Ball
SpringMain Spring
Plunger
SpringPlunger
Cam
Cam Spring EG-82
3. Timing Chain and Chain Tensioner
Both the primary and secondary timing chains use roller chains with a pitch of 9.525 mm (0.375 in.).
The timing chain is lubricated by an oil jet.
The primary timing chain uses one chain tensioner, and each of the secondary timing chains for the right
and left banks uses one chain tensioner.
Both the primary and secondary chain tensioners use a spring and oil pressure to maintain proper chain
tension at all times. They suppress noise generated by the timing chains.
The primary chain tensioner is the ratchet type with a non-return mechanism.

ENGINE - 2GR-FE ENGINE
285EG21
Timing Chain Cover
Wa t e r P u m p G a s k e t
Wa t e r P u m pWater Pump Swirl
Chamber
Oil Pump
Housing
Oil Pump RotorsTiming Chain
Cover
Oil Pump Chamber
View from Front Side View from Back Side
285EG22
Oil
Passage
Check Ball
Check Ball
Spring
Plunger SpringPlunger
Roller Rocker ArmCam
Oil
Passage
Hydraulic
Lash Adjuster
Service Tip
Valve clearance adjustment is not necessary because a hydraulic lash adjuster is used in this model.
EG-83
4. Timing Chain Cover
The timing chain cover has an integrated construction consisting of the cooling system (water pump and
water passage) and the lubrication system (oil pump and oil passage). Thus, the number of parts has been
reduced to reduce weight.
5. Hydraulic Lash Adjuster
The hydraulic lash adjuster, which is located at the fulcrum of the roller rocker arm, consists primarily of
a plunger, plunger spring, check ball, and check ball spring.
The engine oil that is supplied by the cylinder head and the built-in spring actuates the hydraulic lash
adjuster. The oil pressure and the spring force that act on the plunger push the roller rocker arm against
the cam, in order to adjust the valve clearance that is created during the opening and closing of the valve.
As a result, engine noise is reduced.

ENGINE - 2GR-FE ENGINE
285EG23
Oil Pump
Oil FilterOil Strainer EG-84
LUBRICATION SYSTEM
1. General
The lubrication circuit is fully pressurized and all oil passes through an oil filter.
A cycloid rotor type oil pump is used.
Oil Capacity
Dry6.5 Liters (6.9 US pts, 5.7 Imp. qts)
With Oil Filter6.1 Liters (6.4 US pts, 5.4 Imp. qts)
Without Oil Filter5.7 Liters (6.0 US pts, 5.0 Imp. qts)

ENGINE - 2GR-FE ENGINE
285EG77
Main Oil Hole
Cylinder Head
(for Left Bank)
Oil
Filter
Exhaust
Camshaft
Timing OCV*
Intake
Camshaft
Timing OCV*
Oil
PumpExhaust
VVT-i
Controller
Intake
VVT-i
Controller
Relief
Va l v e
Cylinder Head
(for Right Bank)
Exhaust
Camshaft
Timing OCV*
Intake
Camshaft
Timing OCV*
Exhaust
VVT-i
Controller
Intake
VVT-i
Controller
Secondary
Chain
TensionerPrimary
Chain
Tensioner
Secondary
Chain
Tensioner
Cylinder
Block
Crankshaft
Journal
Crankshaft
Pins
Connecting
Rods
Cylinder Head
(for Left Bank)
Oil
Jets
Intake
Camshaft
Journal
Exhaust
Camshaft
Journal
Lash
Adjuster
Cylinder Head
(for Right Bank)
Intake
Camshaft
Journal
Exhaust
Camshaft
Journal
Lash
Adjuster
Oil PanEG-85
Oil Circuit
*: Oil Control Valve

ENGINE - 2GR-FE ENGINE
285EG24
Timing Chain Cover
Oil Pump
Housing
Oil Pump Rotors
(Cycloid Rotor)Crankshaft
To Cylinder
Block
From Oil
Filter
To
Oil FilterFrom
Oil Strainer
Oil passage in the oil pump
285EG25
Oil Jet Cross Section
Oil JetsCheck
Va l v eEngine Oil EG-86
2. Oil Pump
A compact cycloid rotor type oil pump directly driven by the crankshaft is used.
This oil pump has used an internal relief method which circulates relief oil to the suction passage in the
oil pump. This aims to minimize oil level change in the oil pan, reduce friction, and reduce air mixing rate
in the oil.
3. Oil Jet
Oil jets for cooling and lubricating the pistons have been provided in the cylinder block, in the center of
the right and left banks.
These oil jets contain a check valve to prevent oil from being fed when the oil pressure is low. This prevents
the overall oil pressure in the engine from dropping.