Fuel Injection Pump - wsm Kubota L4100 Workshop Manual

L4100, WSM

(7) Fuel Injection Pump

Injection Timing
1. Remove the stop solenoid.
2. Remove the injection pipes and nozzle.
3. Set the speed control lever to maximum fuel discharge position.
(Reference)
• Turn the flywheel with screwdriver.
4. Turn the flywheel counterclockwise (facing the flywheel) until
the fuel fills up to the hole of the delivery valve holder for 1st
cylinder.
5. Turn the flywheel further and stop turning when the fuel begins
to flow over, to get the present injection timing.
6. (The flywheel has mark 1TC and four lines indicating every
0.09 rad (5 °) of crank angle from 0.17 rad (10 °) to 0.44 rad
(25 °) before mark 1TC) Calculate the angle which the center of
the window points out. If the calculation differs from specified
injection timing, add or remove the shim to adjust.
(Injection Timing)
Injection timing Factory specification
NOTE
• The sealant is applied to both sides of the soft metal gasket
shim. The liquid gasket is not required for assembling.
• Shims are available in thickness of 0.175 mm (6), 0.20 mm
(3), 0.25 mm (4) and 0.30 mm (5). Combine these shims for
adjustments.
• The 0.175 mm thick shim is coated only on the lower face.
Therefore, do not use the 0.175 mm thick shim as the top
shim of the combination (injection pump side), because
this cause oil leakage.
• Addition or reduction of shim (0.05 mm, 0.002 in.) delays or
advances the injection timing by approx. 0.009 rad (0.5 °).
• In disassembling and replacing, be sure to use the same
number of new gasket shims with the same thickness.
(1) Delivery Valve Holder
(2) Timing Mark
(3) 2-Holes: 0.20 mm (Shim)
1-S15
ENGINE
0.30 to 0.33 rad
17 to 19 ° before T.D.C.
(4) 1-Hole: 0.25 mm (Shim)
(5) Without Hole: 0.30 mm (Shim)
(6) 2-Holes: 0.175 mm (Shim)
9Y1210278ENS0011US0
KiSC issued 08, 2012 A
(EU)