6-33
Chapter 6 INSPECTION AND REPAIR OF BASIC ENGINE
5.15 Thickness of Thrust Plate - Measure
Measure the thickness of thrust plate.
If the value exceeds the limit, replace the thrust plate with a
new one. When the crankshaft is re-ground due to wear, use
the oversize thrust plate.
For the crankshaft grinding procedure, refer to "Rearmost
Crank Journal Width - Grind" of "INSPECTION AND
REPAIR OF BASIC ENGINE."
Note:(a) Replacement thrust plates are available in three
oversizes of 0.25, 0.50, 0.75 mm [0.0098, 0.0197,
0.0295 in.]
(b) Because the oversize thrust plate can be used in
only one side (a set of upper and lower), the end
play can be adjusted with a minimum crankshaft
grinding.
Thickness of Thrust Plate - Measure
5.16 Piston Cooling Nozzle - Inspect
Inspect the piston cooling nozzle.
If there is any defect such as valve malfunction and oil hole
clogging, replace the piston cooling nozzle with a new one.
Piston Cooling Nozzle (One Jet Spec) - Inspect
Piston Cooling Nozzle (Two Jet Spec) - Inspect
Item Size Nominal value Standard value Limit value
Thickness of thrust plate
Standard 5.00 mm [0.1969 in.]
4.78 to 4.85 mm
[0.1882 to 0.1909 in.]
4.71 mm [0.1854 in.]
Over size
0.25 mm [0.0098 in.] 5.25 mm [0.2067 in.]
5.03 to 5.10 mm
[0.1980 to 0.2008 in.]
4.96 mm [0.1953 in.]
0.50 mm [0.0197 in.] 5.50 mm [0.2165 in.]
5.28 to 5.35 mm
[0.2079 to 0.2106 in.]
5.21 mm [0.2051 in.]
0.75 mm [0.0295 in.] 5.75 mm [0.2264 in.]
5.53 to 5.60 mm
[0.2177 to 0.2205 in.]
5.46 mm [0.2150 in.]
If oil jet pipe of piston cooling nozzle is bent or
deformed, it will reduce the cooling performance, and
can lead to piston seizure.
Item Standard value
Piston cooling nozzle
valve opening pressure
One jet spec
0.26 to 0.32 MPa
{2.7 to 3.3 kgf/cm
2
}
[38 to 47 psi]
Two jet spec
0.10 to 0.15 MPa
{1.0 to 1.5 kgf/cm
2
}
[14 to 21 psi]
Valve
Oil inlet
Spray hole
Valve
Oil hole
Spray hole
To Next Page
Loading...
Need help?
General
