Land Rover Discovery: Cylinder Block Components
![Cylinder Block Components](images/books/227/index481(7).jpg)
- M6 bolt (13 off), M10 bolt (1 off)
- Engine front cover
- Cylinder block
- Lower timing chain cover
- M8 screw (16 off)
- M10 bolt (8 off)
- Dual mass flywheel (manual transmission) or drive plate (Automatic
Transmission)
- Right dynamic balancer
- Left dynamic balancer
- Thrust washer (2 off)
- Upper main bearing (5 off)
- Crankshaft pulley / mass damper
- M10 bolt (4 off)
- Crankshaft
- Lower main bearing (5 off)
- Main bearing cap (5 off)
- M12 bolts (10 off) Main bearing caps
- Windage tray
- M6 screw (12 off)
- M8 screw (16 off)
- Oil pan
MAJOR STRUCTURAL COMPONENTS
![MAJOR STRUCTURAL COMPONENTS](images/books/227/index482.gif)
- Cylinder head
- Cylinder block
- Windage tray
- Oil pan
CYLINDER BLOCK
![CYLINDER BLOCK](images/books/227/index483.gif)
The deep skirt cast aluminum cylinder block is an in-line configuration. Thin
wall, interference fit cast iron liners provide optimum weight, cylinder bore
roundness and robustness. The low volume coolant jacket gives good warmup
times. The cylinder block is a cross flow design with the coolant inlet to
the cylinder head on the exhaust side and the coolant outlet from the
cylinder head on the air inlet side.
Oil from the cylinder head drains back to the oil pan through open
apertures; one located at the front of the cylinder block and one at the rear
of the cylinder block between the timing chain and the lower timing chain
cover.
A cast aluminum alloy, structural windage tray is bolted to the bottom of the
cylinder block to further improve the cylinder block stiffness, minimize
Noise, Vibration and Harshness (NVH) and help reduce oil foaming.
Various machining ports in the cylinder block are sealed with cup plugs and
threaded plugs. Removal of these is not necessary for service procedures.
In cold climate markets a block heater is fitted to the cylinder block. The
heater is screwed into a threaded bore on the cylinder block, which is
normally sealed with a threaded plug.
CYLINDER NUMBERING
![CYLINDER NUMBERING](images/books/227/index484(6).gif)
The cylinders are numbered as shown, with cylinder 1 at the front of the
engine
READ NEXT:
Thrust washers (2 off)
Timing chain drive sprocket
Pin - dual mass flywheel (manual transmission) or drive plate (automatic
transmission) location
Dynamic balancer drive gear
Lower main beari
Oil control ring
Upper piston ring
Lower compression piston ring
Circlip
Piston
Connecting rod
Connecting rod bearing cap
Bolt (2 off)
Lower large end bearing
Upper large end bearing
Sma
Flange bolt
Sprocket
Variable flow oil pump with integral vacuum pump
Oil level gauge
Oil level gauge tube
Bolt (4 off)
Oil pan
Bolt (16 off)
Sealing washer
Drain plug
The oil pan is cast
SEE MORE:
REMOVAL
CAUTIONS:
Make sure that the road wheels are in the straight ahead position.
Use a suitable trim tool.
NOTE:
Removal steps in this procedure may contain installation details.
Make the SRS system safe.
Refer to: Standard Workshop Practices (100-00, Description and
Operation).
Refer to: S
PART(S)
DRAINING
CAUTION:
The fluid filler plug is not a fluid level plug.
WARNING:
Make sure to support the vehicle with axle stands.
CAUTION:
Make sure the vehicle is on a flat level surface.
Raise and support the vehicle.
Refer to: Engine Undershield (501-02 Front End Body Panels,
Removal and In