Kubota ME5700, Workshop Manual

Page: 160 / 508

ME5700, WSM ENGINE
1-S66
[5] FUEL SYSTEM
(1) Checking and Adjusting
Injection Timing
1. Remove the injection pipes.
2. Set the speed control lever to maximum fuel discharge
position.
3. The injection pump has a displacement. In adjusting the
injection timing, pull the stop lever (2) from its free position (3)
by 0.401 to 0.471 rad (23 to 27 ) toward the stop position.
4. Turn the flywheel counterclockwise (facing the flywheel) until
the fuel fills up to the hole of the delivery valve holder (4) 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
0.087 rad (5 ) of crank angle from 0.175 rad (10 ) to 0.436
rad (25 ) before mark 1TC.
Calculate the angle which the projection of the window points
out. If the calculation differs from specified injection timing,
add or remove the shim to adjust.
A
The sealant is applied to both sides of the shim (soft metal
gasket shim). The liquid gasket is not required for
assembling.
A
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.
A
Addition or reduction of shim (0.05 mm, 0.0020 in.) delays
or advances the injection timing by approx. 0.0087 rad
(0.5 ).
A
In disassembling and replacing the injection pump, be
sure to use the same number of new shims with the same
thickness.
A
Refer to figure below to check the thickness of the shims.
(A) Injection Pump
Injection timing Factory spec.
0.314 to 0.349 rad
(18 to 20 ) before T.D.C.
(1) Timing Window (6) Two-holes:
(2) Stop Lever 0.20 mm (0.0079 in.)
(3) Stop Lever in Free Position (7) One-hole:
(4) Delivery Valve Holder 0.25 mm (0.0098 in.)
(5) Shim (Soft Metal Gasket Shim) (8) Without hole:
0.30 mm (0.018 in.)
A : 0.401 to 0.471 rad (23 to 27 )
0000002537E
KiSC issued 04, 2006 A