+LQR 3 & Valve Adjustment Procedure, Valve Lash Clearance Specifications Page 1 of 3 ! CAUTION
• Make sure that the bolts around head bolts are tightened to the specified tightening torque before adjustment. • When an engine retarder is installed, remove the engine retarder, use substitute bolts to tighten the rocker arm support to the specified tightening torque, and then adjust the valve clearance. • Make sure that there is no dirt on the crosshead, the valve stem and the push rod.
1.
Adjustment of valve clearance (1)
Turn the crankshaft and check that the timing mark at the flywheel inspection window (1) is at "1/6" and that the key on the shaft of the supply pump bearing case is pointing up to confirm that the No. 1 cylinder is at the compression
top dead center. ! CAUTION
SAPH301090900144
• If the timing mark is at "1/6", but the shaft key is pointing down, the No. 6 cylinder is at the compression top dead center. In this case, turn the crankshaft another turn to set the No. 1 cylinder to the compression top dead center.
Hino P11C Engine Parts www.Hino-P11C.com Email: EngineParts@HeavyEquipmentRestorationParts.com Phone: 269 673 1638
Hino P11C Valve Adjustment Procedure, Valve Lash Clearance Specifications Page 2 of 3 (2)
When the No. 1 cylinder is at the compression top dead center, the valves marked by in the following table can be adjusted, and when the No. 6 cylinder is at the compression top dead center, the valves marked by can be adjusted.
Cylinder
Valve
At the time of No. 1 cylinder at the
At the time of No. 6 cylinder at the
No.
layout
compression top
compression top
dead center
dead center
Suction 1
2
3
4
Exhaust Suction Exhaust Suction Exhaust Suction Exhaust Suction
5
6
Exhaust Suction Exhaust
(3)
Loosen the adjusting screw (2) and the lock nut of the crosshead completely.
" QQ "_ MR a
! CAUTION
• Provide the adjusting screw protrusion of 14 mm{0.5512 in.} or more from the top surface of the crosshead. If the adjusting screw (2) is not completely separated from the valve stem, correct adjustment is not allowed.
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SAPH301090900145
(4)
Insert a thickness gauge (1) between the rocker arm and the crosshead and adjust the clearance (X) with the adjusting screw (2) of the rocker arm. Tighten the lock nut.
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Standard value (cold engine)
IN
0.45{0.0177}
(mm{in.})
EX
0.60{0.0236}
Tightening torque : 44 N m {450 kgf cm, 32 lbf ft} SAPH301090900146
Hino P11C Valve Adjustment Procedure, Valve Lash Clearance Specifications Page 3 of 3 (5)
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Loosen the adjusting screw of the crosshead with the thickness gauge inserted. Make sure that feel on the thickness gauge is appropriate.
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! CAUTION
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â&#x20AC;˘ If it becomes lighter, make adjustments again from the beginning.
0
< SAPH301090900147
A - Start B- Nut fixing position J- Correct contact K - Do not move L- Feel does not change X- Feel of thickness gauge Y- Adjusting screen loosening amount Large
(6)
Tighten the adjusting screw of the crosshead until the thickness gauge (2) does not move.
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0 - Contact (7)
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While loosening the adjusting screw of the crosshead gradually, tighten the lock nut of the crosshead at the position where feel on the thickness gauge is appropriate. Tightening torque : 28 N m {290 kgf cm, 20 lbf ft}
. ! CAUTION 0
< SAPH301090900149
A - Start B- Nut fixing position J- Correct contact K - Do not move L- Feel does not change X- Feel of thickness gauge Y- Adjusting screen loosening amount Large
â&#x20AC;˘ 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 a clearance between the adjusting screw and the valve of the crosshead. Correct adjustment is not allowed.
Hino P11C Engine Parts www.Hino-P11C.com Email: EngineParts@HeavyEquipmentRestorationParts.com Phone: 269 673 1638