Home/Saab/9-5/Saab 9-5 I рестайлинг (2001-2005)/Repair manual/Basic Engine, 4-CYLINDER Petrol/Checking valve tightness

Contents

Section: Basic Engine, 4-CYLINDER Petrol

Removing the power train

Piston rings

Valve-gear timing

Checking valve tightness

New tensioner

Main bearings

Pitting in the surface sealing to the cylinder head

Conditions

Oil type

Spark plugs

Checking for oil leaks

Checking condition of belt

Drive belts, change (4-cyl.)

Coolant

78 74 878 Floor stand

Timing end

Flywheel end

4-cyl, V6

For unloading the belt tensioner

For parting the fuel line and tank ventilation

For lifting the engine

Sensor for Motometer compression gauge

For pressurizing cylinders, e.g. when changing valve seals

Spare part for lifting beam

Allows independent placement of floor stand.

For adjusting gear lever position (x2)

(9-3 Viggen)

Removing the ball joint and steering link

Cylinder bore

General data

Control values, pressure

Piston types

Classification of pistons and cylinder bores

Piston classification

Piston diameter

Gudgeon pins

Colour coding of main bearing and big-end bearing shells

Crankshaft journal diameter (1)

Main journal diameter (2)

Valve guides

Maximum lateral clearance between valve stem and valve guide

Valve springs (double springs)

Tappets

Valve timing

Oil pressures

Cylinder block

Pistons

Connecting rods

Cylinder head

Timing cover and end plate

Second-order forces acting vertically

Second-order forces acting laterally

The Saab balancer shaft system

Balancer shaft drive

Camshaft and tappets

Chain tensioner

Oil sump

Oil filter

Background

All sections

Checking valve tightness Saab 9-5 I рестайлинг

Basic Engine, 4-CYLINDER Petrol

Checking valve tightness

Clean the combustion chamber and valve seats. Use a rotating wire brush for example. Wash the cylinder head.
Refit the intake valves and fit new exhaust valves. Fill the intake and exhaust chambers with methanol. Do not spill.
Check all valves for leaks. The fluid may dampen but not run out. If the valves are tight, fit the cylinder head, see «FITTING OF CYLINDER HEAD (IN CAR)»(ref-212206-S15944449872005122200000)
If the valves leak, clean and recut the valve seats and grind with paste. Check the valve clearances, see «CHECKING VALVE CLEARANCES»(ref-212206-S04533876662005122200000) .