Kubota ,RCK60B-23BX, Руководство по ремонту

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Item Factory specification Allowable limit
Crankpin to crankpin bearing Oil clearance 0.029 to 0.091 mm
0.0012 to 0.0035 in.
0.20 mm
0.0079 in.
• Crankpin O.D. 39.959 to 39.975 mm
1.5732 to 1.5738 in.
－
• Crankpin bearing I.D. 40.040 to 40.050 mm
1.5764 to 1.5767 in.
－
Cylinder liner I.D. 76.000 to 76.019 mm
2.9922 to 2.9928 in.
76.15 mm
2.998 in.
Cylinder (oversize) 76.500 to 76.519 mm
3.0119 to 3.0125 in.
76.65 mm
3.018 in.
Lubricating system
Item Factory specification Allowable limit
Engine oil pressure At idle speed More than
49 kPa
0.50 kgf/cm
2
7.1 psi
－
At rated speed 197 to 441 kPa
2.0 to 4.50 kgf/cm
2
28.5 to 64.0 psi
147 kPa
1.50 kgf/cm
2
21.3 psi
Inner rotor to outer rotor Clearance 0.060 to 0.18 mm
0.0024 to 0.0071 in.
－
Outer rotor to pump body Clearance 0.100 to 0.180 mm
0.00394 to 0.00708 in.
－
Inner rotor to cover Clearance 0.025 to 0.075 mm
0.00099 to 0.0029 in.
－
Relief valve spring Length 32 mm
1.26 in.
28 mm
1.10 in.
Cooling system
Item Factory specification Allowable limit
Thermostat Valve opening temperature (at be-
ginning) 69.5 to 72.5 ℃
157.1 to 162.5
℉
－
Valve opening temperature
(opened completely) 85
℃
185 ℉
－
Radiator Water leakage test pressure No leak at specified pressure
－
Radiator cap Pressure falling time 10 seconds or more
88 → 59 kPa
0.90 → 0.60 kgf/cm
2
13 → 8.5 psi
－
Fan belt Tension 7 to 9 mm / 98 N
0.28 to 0.35 in. / 98 N (10 kgf,
22 lbf)
－
Fuel system
Item Factory specification Allowable limit
Injection pump Injection timing 0.3360 to 0.3621 rad
(19.25 to 20.75°)
before T.D.C.
－
Pump element Fuel tightness － 13.73 MPa
140.0 kgf/cm
2
1991 psi
(Continued)
3. ENGINE
SERVICING
3-26
BX1880,BX2380,BX2680,RCK60B-23BX,RCK54-23BX,RCK48-18BX,RCK60D-26BX,RCK54D-26BX
KiSC issued 03, 2019 A