Kubota L3540 Workshop Manual page 113

L3540, L4240, L5040, L5240, L5740, WSM
Valve Clearance
IMPORTANT
• Valve clearance must be checked and adjusted when engine
is cold.
1. Remove the head cover, the glow plugs and the timing window
cover on the clutch housing.
2. Align the "1TC" mark line (1) on the flywheel and center of timing
window (2) so that the No. 1 piston comes to the compression or
overlap top dead center.
3. Check the following valve clearance marked with " " using a
feeler gauge.
4. If the clearance is not within the factory specifications, adjust the
valve clearance with the adjusting screw.
Valve clearance Factory spec.
NOTE
• The "1TC" mark line (1) on the flywheel is just for No. 1
cylinder. There is no "TC" marking for the other cylinders.
• No. 1 piston comes to the T.D.C. position when the "1TC"
mark line is aligned with center of timing window on clutch-
housing. Turn the flywheel 0.26 rad (15 °) clockwise and
counterclockwise to see if the piston is at the compression
top dead center or the overlap position. Now referring to the
table below, readjust the valve clearance (A). (The piston is
at the compression top dead center when both the IN. and
EX. valves do not move; it is at the overlap position when
both the valves move.)
• Finally turn the flywheel 6.28 rad (360 °) and align the "1TC"
mark line (1) and the center of timing window (2). Adjust all
the other valve clearance as required.
• After turning the flywheel counterclockwise twice or three
times, recheck the valve clearance (A), firmly tighten the
lock nut of the adjusting screw.
Valve
arrangement
Adjustable
cylinder
location of piston
No. 1
When No. 1 piston
No. 2
comes to
compression top
No. 3
dead center
No. 4
No. 1
When No. 1 piston
No. 2
comes to overlap
No. 3
position
No. 4
(1) "1TC" Mark Line
(2) Timing Window
1-S13
0.18 to 0.22 mm
0.0071 to 0.0087 in.
V2203-M
D1803-M V2403-M
V2403-M-T
IN. EX. IN.
– –
– –
A : Valve Clearance
W10379490
KiSC issued 04, 2010 A
ENGINE
EX.