ENGINE
M6040, M7040, WSM
1-S14
Checking Valve Clearance
• Valve clearance must be checked and adjusted when
engine is cold.
1. Remove the high pressure pipes, glow lead, glow plugs and the
cylinder head cover.
2. Align the 1TC mark of flywheel and the convex of flywheel
housing timing windows so that the first piston (front cover side)
comes to the compression top dead center.
3. Before adjusting the valve clearance, adjust the bridge evenly to
the valve stem.
4. Loosen the lock nut (2) and adjust with screw (1).
5. Slightly push the rocker arm with your fingers and screw in the
adjusting screw slowly until you feel the screw touch the top of
valve stem, then tighten the lock nut.
6. Loosen the lock nut (4) of adjusting screw (3) (push rod side)
and insert the feeler gauge between the rocker arm and the
bridge head. Set the adjusting screw to the specified value, then
tighten the lock nut.
• After adjusting, tighten the lock nut (4) securely.
9Y1210143ENS0005US0
Valve clearance Factory specification
0.13 to 0.17 mm
0.0051 to 0.0067 in.
Valve arrangement
Adjustment cylinder
Location of piston
IN. EX.
When No.1 piston is
at compression top
dead center
1st
2nd
3nd
4th
When No.1 piston is
at overlap position
1st
2nd
3nd
4th
Tightening torque
Cylinder head cover screw
9.81 to 11.2 N·m
1.00 to 1.15 kgf·m
7.24 to 8.31 lbf·ft
Injection pipe retaining nut
23 to 26 N·m
2.3 to 3.7 kgf·m
17 to 26 lbf·ft
(1) Adjusting Screw
(2) Lock Nut
(3) Adjusting Screw
(4) Lock Nut
To Next Page
Loading...
