SsangYong Musso. Manual - part 235

1A1-10  GENERAL ENGINE INFORMATION

Measuring Procedure

1. Warm the engine up to normal operating temperature.

2. Remove the spark plugs.

3. Place the diagram sheet to compression pressure

tester.

4. Connect the adaptor to compression pressure tester

and install it into the spark plug hole.

5. Crank the engine approx. eight revolutions by using

the start motor.

6. Compare the measurements of compression

pressure tester with the specifications.

7. Measure the compression pressure of the other

cylinders in the same way.

8. If measured value is not within the specifications,

perform the cylinder pressure leakage test.

Notice

z

Discharge the combustion residues in the cylinders

before testing the compression pressure.

z

Apply the parking brake before cranking the

engine.

GENERAL ENGINE INFORMATION  1A1-11

CYLINDER PRESSURE LEAKAGE TEST

3 Engine Oil Filler Cap
4 Vibration Damper

Permissible Pressure Leakage

6 Cylinder Pressure Leakage Tester with

Connecting Hose

Universal Tool

At Whole Engine

At Valve and Cylinder Head Gasket

At Piston and Piston Ring

Max. 25 %

Max. 10 %

Max. 20 %

Cylinder Number By Mark On Vibration Damper At TDC

TDC Mark

Cylinder Number

b (240°)

3, 4

a (120°)

2, 5

OT (TDC)

1, 6

Cylinder Pressure Leakage Tester

Bosch, EFAW 210A

Sun, CLT 228

1A1-12  GENERAL ENGINE INFORMATION

Leakage Test

1. Warm the engine up to normal operating temperature.

2. Disconnect the negative battery cable.

3. Remove the spark plugs.

4. Check the coolant level by opening the coolant surge tank

cap and replenish if insufficient.

5. Open the engine oil filler cap.

6. Connect the tester to air pressure line and adjust the scale

of tester.

7. Install the connecting hose to spark plug hole.

9. Connect the connecting hose to tester and measure the

leakage volume after blowing up 5bar of compressed air.

Notice

Measure the leakage volume in the completely opening
condition of throttle valve by pulling the acceleration cable.

10. Perform the pressure test according to the firing order.

Notice

Firing Order : 1 - 5 - 3 - 6 - 2 - 4

11. Compare the leakage pressure with the specifications.

8. Position the piston of No.1 cylinder at TDC by rotating the

crankshaft.

GENERAL ENGINE INFORMATION  1A1-13

GENERAL INFORMATION

CLEANLINESS AND CARE

An automobile engine is a combination of many
machined, honed, polished and lapped surfaces with
tolerances that are measured in the ten-thousanths of
an inch. When any internal engine parts are serviced,
care and cleanliness are important. A liberal coating of
enigne oil should be applied to friction areas during
assembly, to protect and lubricate the surfaces on initial
operation. Proper cleaning and protection of machined
surfaces and friction areas is part of the repair
procedure. This is considered standard shop practice
even if not specifically stated.

Whenever valve train components are removed for
service, they should be kept in order. They should be
installed in the same locations, and with the same mating
surfaces, as when they were removed.

Battery cables should be disconnected before any major
work is performed on the engine. Failure to disconnect
cables may result in damage to wire harness or other
electrical parts.

ON-ENGINE SERVICE

Caution: Disconnect the negative battery cable
before removing or installing any electrical unit, or
when a tool or equipment could easily come in
contact with exposed electrical terminals.
Disconnecting this cable will help prevent personal
injury and damage to the vehicle. The ignition must
also be in LOCK unless otherwise noted.

Notice: Any time the air cleaner is removed, the intake
opening should be covered. This will protect against
accidental entrance of foreign material, which could
follow the intake passage into the cylinder and cause
extensive damage when the engine is started.