HINO J08E ENGINE MECHANICAL
Hino J08E Adjustment of valve clearance Page 1 of 2 1.
Precautions before adjustment CAUTION
•
Before adjustment, make sure that bolts of the cylinder head, rocker arm support, nozzle clamp, camshaft housing and camshaft bearing cap are tightened to the specified torque.
2.
Adjustment of valve clearance (1)
Make sure that there is no dirt between the crosshead and the valve stem
(2)
Turn the crankshaft in the forward direction and adjust the cylinder to the compression top dead center.
CAUTION
Cam base Roller circle
Adjusting screw of rocker arm Lock nut Adjusting screw of crosshead 10 mm or more
(3)
•
Make sure that there is a roller on the cam base circle.
Loosen the adjusting screw and the lock nut of the crosshead completely.
CAUTION
•
Provide the adjusting screw protrusion of 10 mm or more from the top surface of the crosshead. If the adjusting screw is not completely separated from the valve stem, correct adjustment is not allowed.
Clearance
Close contact Nut
SAPH300020900175
Thickness gauge
Rocker arm
(4)
Insert a thickness gauge between the rocker arm and the
crosshead and adjust the clearance with the adjusting screw of the rocker arm. Tighten the lock nut. Hino J08E Intake Valve Lash Clearance (cold) .30MM or .0118 Inch Hino J08E Exhaust Valve Lash Clearance (cold) .45MM or .0177 Inch Standard value
IN
0.30mm{0.0118 in.}
(cold engine)
EX
0.45mm{0.0177 in.}
Tightening torque : 25 N m {250 kgf cm, 18 lbf ft}
Close contact Crosshead SAPH300020900176
(5)
Loosen the adjusting screw of the crosshead with the thickness gauge inserted. Make sure that feel on the
Start
thickness gauge is not lighter. (No move)
Nut fixing position
CAUTION (Appropriate contact)
•
If it becomes lighter, make adjustments again from the beginning.
Feel remains the same. Loosening of adjusting screw Large
Hino J08E engine parts email: EngineParts@HeavyEquipmentRestorationParts.com Phone: 269 673 1638
Hino J08E Adjustment of valve clearance Page 2 of 2 (6)
Tighten the adjusting screw of the crosshead until the thickness gauge does not move.
Close contact
Close contact
SAPH300020900178
(7)
While loosening the adjusting screw of the crosshead gradually, tighten the lock nut of the crosshead at the
Start
position where feel on the thickness gauge is appropriate. (No move)
Nut fixing position
(Appropriate contact)
Tightening torque : 25 N m {250 kgf cm, 18 lbf ft} CAUTION
Feel remains the same. Loosening of adjusting screw Large SAPH300020900179
• Do not over-loosen the adjusting screw. Overloosening of the adjusting screw reproduces the original status. Although feel on the thickness gauge is appropriate, there is clearance between the adjusting screw and the valve of the crosshead. Correct adjustment is not allowed.
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