Shibaura N843 - Page 73

109823 2/09 7-5
Lubrication System
Oil Pump
Discharge rate: gal/min(L/min)
Engine speed: 2500rpm Dis-
charge pressure:
42.6–71.1 PSI
(294–490 kPa)
{3–5 kgf/cm³}
Oil temperature:
122°F–176°F
(50°C–80°C)(SAE30)
4.28(16.2) 4.28(16.2)
Oil pressure switch operating
pressure PSI(kPa){kgf/cm
2
}
7.11(49.0){0.5} 4.26(29.4){0.3} 5.69–8.53(39.2–
58.8){0.4–0.6}
2.84–5.69(19.6 -
39.2){0.2–0.4}
Relief pressure
PSI(kPa){kgf/cm
²
}
49.75–63.96
(343–441)
{3.5–4.5}
35.53–49.75
(245–343)
{2.5–3.5}
Lubrication oil capacity US
Qt(L)
4.86(4.6) With
filter(+0.32
Qt.)(+ 0.3 L)
6.34(6)With fil-
ter(+0.53 Qt.)(+
0.5 L)
Tip clearance (rotor-to-vane) 0.004–0.006
(0.1–0.15)
0.004–0.006
(0.1–0.15)
0.0100
(0.25)
0.0100
(0.25)
Side clearance (rotor-to-
cover)
0.004–0.006
(0.1–0.15)
0.004–0.006
(0.1–0.15)
.008(0.2) .008(0.2)
Fuel System
Injection
Pump
Type Bosch, PFR Type
Injection timing Before
T.D.C.
25–27° 18–20°
Piston dis-
placement
before
T.D.C.
0.27-.31in
3
(4.411–5.123ml)
N843: 0.16-0.19in
3
(2.594–3.187ml)
N843L: 0.19-0.24
in
3(
3.195–3.923ml)
0.22-.26in
3
(3.529-
4.217ml)
Injection
Nozzle
Type S773L—131406440, N843(L)—(Nozzle) 105007-1170 (NP DN4PDN117)
Injection pressure
PSI(MPa){kgf/cm
2
}
1711.4(11.8){120} 2175.6–2349
(15.2–16.2)
{155–165}
1636–1778
(11.28-12.26)
{115-125}
Angle of injection direction 4° 4°
Nozzle and holder tightening
torque lb
f
•ft(N•m){kgf•m}
43.5–50.9
(59.0–69.0)
{6–7}
36.1–37.3
(49.0–50.6)
{5–7}
With cylinder head installed
Unit Part Inspection Items
Standard Dimension Standard Value
To be
Repaired
Allowable Limit
S773L N843(L) S773L N843(L) S773L N843(L) Remarks