50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL
58
60 Hz: G655 - G750 - G800 - G850XW/XF
6.
Rotate the crankshaft. When a cylinder reaches the
compression TDC (Top Dead Centre), adjust the
valve clearance of the cylinder.
7.
When a cylinder valve overlap, adjust the valve
clearance cylinder of the compression TDC (Top
Dead Centre), as follows.
• 8 cylinder engine (DP158L)
• 10 cylinder engine (DP180L)
• 12 cyliner engine (DP222L)
TIGHTENING CYLINDER HEAD BOLT
1.
Retightening cylinder head bolt on new engine.
1) The cylinder heads are mounted with cylinder head
bolts which are tightened by the angle of rotation
method.
2) On new engines the cylinder head bolts are
tightened up for the first time at the factory after the
engine has been broken in.
3) After the first 400 hours of operation retighten
cylinder head bolts 1 to 4 in the order shown in the
figure above by a further 90° (1/4 revolution).
CAUTION
The two outer screws (intake and exhaust sides)
must not be retightened.
The cylinder head bolts to be retightened must not
be loosened first, but simply tightened by a further
90° (1/4 revolution) from their actual position.
Engine Model
In. valve
Ex. valve
DP180L
DP180LBS
0.25mm
0.35mm
DP180LBF
0.25mm
0.35mm
DP180LAS
0.25mm
0.35mm
DP180LAF
0.25mm
0.35mm
DP222L
DP222LAS
0.25mm
0.35mm
DP222LBS
0.25mm
0.35mm
DP222LBF
0.25mm
0.35mm
DP222LCS
0.25mm
0.35mm
DP222LCF
0.25mm
0.35mm
Valve overlap cylinder No.
1
5
7
2
6
3
4
8
6
3
4
8
1
5
7
2
Adjusting valve cylinder No. (In./Ex. Valve)
Valve overlap cylinder No.
1
6
5
10
2
7
3
8
4
9
7
3
8
4
9
1
6
5
10
2
Adjusting valve cylinder No. (In./Ex. Valve)
Valve overlap cylinder No.
1
12
5
8
3
10
6
7
2
11
4
9
6
7
2
11
4
9
1
12
5
8
3
10
Adjusting valve cylinder No. (In./Ex. Valve)
DV2213044A_E
Intake side injector
Exhaust side
