Kubota GZD15, Руководство по ремонту

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GZD15, WSM ENGINE
1-S21
Cylinder Head
1. Loosen the pipe clamp, and remove the water return pipe.
2. Remove the cylinder head screw in the order of (j) to (a).
3. Lift up the cylinder head to detach.
4. Remove the cylinder head gasket and O-ring (1).
(When reassembling)
A
Replace the cylinder head gasket with a new one.
A
Securely fit the O-ring (1) to the pipe pin.
A
Tighten the cylinder head screws after applying sufficient oil.
A
Tighten the cylinder head screws diagonal sequence starting
from the centre.
A
Tighten them uniformly, or the head may deform in the long
run.
A
Retighten the cylinder head screws after running the engine
for 30 minutes.
Tappets
1. Remove the tappets (1) from the crankcase.
(When reassembling)
A
Visually check the contact between tappets and cams for
proper rotation. If defect is found, replace tappets.
A
Before installing the tappets, apply engine oil thinly around
them.
A
Do not change the combination of tappet and tappet
guide.
Tightening torque Cylinder head screw
37.3 to 42.2
3.8 to 4.3
27.5 to 31.1 ft-lbs
(j) to (a): To Loosen (1) O-ring
(a) to (j): To Tighten
0000001684E
(1) Tappet
0000000854E
KiSC issued 04, 2006 A