Isuzu AA-6HK1T Workshop Manual page 49

0B–8 SERVICE INFORMATION
Intake and Exhaust Valve Arrangement
Valve Names
No. 1 cyl. at TDC on compression
No. 6 cyl. at TDC on compression
I : Intake valve. E: Exhaust valve
Compression Pressure Measure
To measure the compression pressure, the engine must
be cold. Engine coolant temperature should be at 20°C.
Battery and starter motor condition must be normal.
1. Remove the glow plug and the injection fuel pipe from
each cylinder.
2. Install the compression gauge adapter 5-8840-2622-
0 to the glow plug installation hole.
3. Install the compression gauge to the compression
gauge adapter.
4. Crank the engine with starter motor (about 200 min
and take the compression gauge reading.
5. Repeat the procedure (Steps 2 to 4) for the remaining
cylinders.
Compression Pressure
Standard : 3.24 MPa (33 kg/cm
Limit : 2.26 MPa (23.0 kg/cm
Compression pressure should be approximately the
same for each cylinder.
A variation exceeding 200 kPa (2.0 kg/cm
unacceptable.
Cylinder No. 1
I
2
/ 470 psi)
2
/ 327 psi)
2
/ 28 psi) is
2
E I E I
040EY00003
–1
)
3 4
E I E I
5 6
E I E