Kubota B1710, Workshop Manual

Page: 117 / 370

1-S54
B1710 · B2110 · B2410 · B2710, WSM ENGINE
[5] FUEL SYSTEM
(1) Checking and Adjusting
(A) Injection Pump
Injection Timing
1. Remove the injection pipes.
2. Remove the engine stop solenoid, push in the control rack (3) of
the injection pump by 5 mm (0.2 in.) and hold it at that position.
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.
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.
(Reference)
• The alignment mark (2) of the injection timing (1) is not in
alignment with the center of the timing window (8).
• The above mark comes aligned with the center of the clutch
housing rib (9).
W10369450
Injection timing Factory spec.
0.31 to 0.35 rad. (18 to
20 °) before T.D.C.
(1) Timing
(2) Alignment Mark
(3) Control Rack
(4) Shim (Soft Metal Gasket Shim)
(5) Two-holes : 0.20 mm (0.0079 in.)
(6) One-hole : 0.25 mm (0.0098 in.) (7) Without hole : 0.30 mm (0.0118 in.)
(8) Timing Window
(9) Rib
a : 5 mm (0.2 in.)
KiSC issued 11, 2006 A