Cub Cadet 8454 - Manual (Page 87)

ENGINE
2-65 D569-W02 May-2003
569W2C7A
(B) Delivery valve fuel tightness
1. Remove the injection pipes, glow plugs and the in-
let manifold, and install a pressure tester.
2. With the speed control lever at the fuel injection po-
sition, turn the crankshaft counterclockwise (facing
the flywheel) until the pressure builds up to the fuel
injection pressure.
3. Release the pressure in the delivery chamber by
moving down the plunger to bottom dead center
(turn the crankshaft clockwise approx 1.57 rad (90°)
from the FI timing).
4. If the pressure drops for 5 seconds exceeds the
allowable limit, replace the delivery valve or pump
assembly.
5. If the pressure does not built up, replace the pump
element with new one and test again.
Fuel
injection
pressure
Pressure
drop
Factory
spec.
Allowable
limit
14.71 MPa
150 kgf/cm 2
2134 psi
0.98 MPa
10 kgf/cm 2
142 psi
569W2C8A
b. Injection Nozzle
Fuel
injection
pressure Factory
spec.
13.73 ~ 14.71 MPa
140 ~ 150 kgf/cm 2
1991 ~ 2134 psi
(1) Adjustment Washer
• Never come in contact with spraying
diesel fuel under pressure, which can
have sufficient force to penetrate the
skin, causing serious personal injury.
• Be sure nobody is in direction of the
spray.
CAUTION
(A) Fuel injection pressure
1. Set the injection nozzle to the nozzle tester.
2. Measure the injection pressure.
3. If the measurement is not within the factory specifi-
cations, adjust with the adjustment washer (1) in-
side the nozzle holder.
(Reference)
Pressure variation with 0.1 mm (0.004 in.) difference of
adjusting washer thickness is approx. 10 kgf/cm
2 .