D439E Service Manual 2. Engine Mechanical System (D439E)
23
Items
Standard
([] indicates standard
diameter)
Limit
Corrective
action
Timing gear backlash
Crankshaft gear and idler gear A
Idler gear A and cam shaft gear
Idler gear A and idler gear B
Idler gear B and supply pump gear
Camshaft gear and power steering pump
gear Crankshaft gear and oil pump gear
Power steering pump gear and vacuum
pump gear
0.062~0.159mm
0.068~0.175mm
0.062~0.160mm
0.073~0.169mm
0.075~0.160mm
0.049~0.169mm
0.075~0.160mm
Repair or
replace
Idler gear endplay 0.05~0.22mm 0.3mm
Replace thrust
plate
Clearance between idler businq and idler
shaft
[45] 0.025~0.06mm 0.1mm Replace busing
Flywheel
Distortion of frictional surface
Height of frictional surface
Run-out of frictional surface (while
installed)
Below 0.05mm
24.5mm
Below 0.1mm
0.2mm
23.5mm
0.2mm
Repair or
replace
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