Engine - Valve Rocker Arm Modificatons
83toyota3REFERENCE: ENGINE
NUMBER: 008
DATE: 3-4-83
MODEL: LN44
TITLE L DIESEL ENGINE VALVE ROCKER ARM MODIFICATONS
To reduce contact area wear between the valve stem and the valve rocker arm, the offset of the valve rocker arm to the valve stem has been increased by modifying the valve rocker support, camshaft bearing cap and valve rocker arm as shown below.
(5) Valve Rocker No. 2 (Exhaust)
(1) Valve Rocker Support
(4) Valve Rocker No. 1 (Intake)
(2) Camshaft Bearing Cap No. 3
PRODUCTION EFFECTIVE:
Item Number From Engine Number Production Date
(1), (2), (3) L-0557112 to L-0603464 July 1982 to October 1982
(4), (5) L-0564232 to L-0603464 July 1982 to October 1982
From Frame Number
JT4LN44**C1104298 to JT4LN44**D1111497 July 1982 to October 1982
PART NUMBER INFORMATION:
Previous Part Number New Part Number Part Name
*13951-54010 Unchanged Support, valve rocker,
No. 1
*11101-54024 Unchanged Head sub-assy, cylinder
**13801-54011 13801-54012 Arm sub-assy, valve rocker
No. 1
*13802-54011 Unchanged Arm sub-assy, valve rocker
No. 2
*These parts are interchangeable with the previous parts. **This part is not interchangeable with the previous part.