1-S9
ZD21N-EC, ZD21-EC, ZD28-EC, WSM
ENGINE
[2] LUBRICATING SYSTEM
W1017384
[3] COOLING SYSTEM
W1017547
Item Factory Specification Allowable Limit
Engine Oil Pressure At Idle Speed
At Rated Speed
More than 49 kPa
0.5 kgf/cm
2
7 psi
196 to 441 kPa
2.0 to 4.5 kgf/cm
2
28 to 64 psi
–
147 kPa
1.5 kgf/cm
2
27 psi
Inner Rotor to Outer Rotor Clearance 0.03 to 0.14 mm
0.0012 to 0.0055 in.
–
Outer Rotor to Pump Body Clearance 0.07 to 0.15 mm
0.0028 to 0.0059 in.
–
Inner Rotor to Cover End Clearance 0.075 to 0.135 mm
0.00295 to 0.00531 in.
–
Thermostat Valve Opening
Temperature
(At Beginning)
Valve Opening
Temperature
(Opened
Completely)
80.5 to 83.5 °C
176.9 to 182.3 °F
95 °C
203 °F
–
–
Radiator Water Tightness Water tightness at
specified pressure
137 kPa
1.4 kgf/cm
2
, 20 psi
–
Radiator Cap Air Leakage 10 seconds or more
88 → 59 kPa
0.9 → 0.6 kgf/cm
2
13 → 9 psi
–
Fan Belt Tension Approx. 10 mm (0.4 in.)
deflection at 98 N
(10 kgf, 22 lbs) of force
–
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