wsm BX1800 Workshop Manual page 142

BX1800 · BX2200, WSM
[5] FUEL SYSTEM
(1) Checking and Adjusting
(A) Injection Pump
Injection Timing
1. Remove the injection pipes.
2. Remove the engine stop solenoid.
3. Turn the flywheel counterclockwise (facing the flywheel) until fuel
flows from the delivery valve holder.
4. Continue to turn the flywheel slowly, and stop it as soon as the
fuel level at the tip of the delivery valve holder begins to increase.
5. Check to see if the timing angle lines on the flywheel is aligned
with the alignment mark (2).
6. If the injection timing is out of adjustment, readjust the timing with
shims.
Factory
Injection timing
spec.
NOTE
• The sealant is applied to both sides of the shim (soft metal
gasket shim). The liquid gasket is not required for
assembling.
• Shims are available in thickness of 0.20 mm (0.0079 in.), 0.25
mm (0.0098 in.) and 0.30 mm (0.0118 in.). Combine these
shims for adjustments.
• Addition or reduction of shim (0.05 mm, 0.0020 in.) delays or
advances the injection timing by approx. 0.0087 rad. (0.5 °).
• In disassembling and replacing the injection pump, be sure
to use the same number of new shims with the same
thickness.
• Refer to figure below to check the thickness of the shims.
(1) Timing Line
(2) Alignment Mark
(3) Shim (Soft Metal Gasket Shim)
Fuel Tightness of Pump Element
1. Remove the engine stop solenoid.
2. Remove the injection pipes and glow plugs.
3. Install the injection pump pressure tester to the injection pump.
4. Set the speed control lever to the maximum speed position.
5. Turn the flywheel ten times or more to increase the pressure.
6. If the pressure can not reach the allowable limit, replace the
pump element or injection pump assembly.
Fuel tightness of pump
Allowable limit
element
NOTE
• Apply liquid gasket (Three Bond 1215 or equivalent) to both
sides of the solenoid cover gasket.
1-S66
ENGINE
0.31 to 0.34 rad. (17.5 to
D722
19.5 °) before T.D.C.
0.35 to 0.38 rad. (20 to
D905
22 °) before T.D.C.
(4) Two-holes : 0.20 mm (0.0079 in.)
(5) One-hole : 0.25 mm (0.0098 in.)
(6) Without hole : 0.30 mm (0.0118 in.)
W10369450
14.7 MPa
2
150 kgf/cm
2133 psi
W10401760
KiSC issued 07, 2006 A