Hino S5-LJ05E04A Workshop Manual page 308

10–32
STRAIGHTEDGE
LONGITUDINAL
RIGHT ANGLE
DIRECTION
DIRECTION
LOCATION OF MEASUREMENT
ENGINE MECHANICAL (J05E)
INSPECTING THE COMPONENTS
1. INSPECTING THE CYLINDER HEAD
(1) Use the straightedge and a thickness gauge to measure strains in
the lower surface of the cylinder head and in the manifold mount-
ing surface. Replace if a measurement reading exceeds the per-
missible limit.
SICKNESS
GAUGE
! CAUTION
• Perform measurement on a flat surface such as a surface
plate to prevent the deformation in the head.
•
Do not adjust the bottom surface by grinding or the timing
gear backlash will be changed.
SHTS021270900064
(2) Use the dye penetrant testing (red check) to inspect for crack and
damage on the cylinder head. If found defective, replace the cylin-
der head.
SHTS021270900065
Measurement Standard value
point (mm {in.})
Longitudinal
0.06 {0.0024}
direction
Right angle
0.03 {0.0012}
direction
Permissible limit
(mm {in.})
0.20 {0.0079}
0.20 {0.0079}