2.
Rotate the crankshaft in the direction of engine
rotation until the inlet valve of the No. 6 cylinder
has opened and the exhaust valve of the No. 6
cylinder has not completely closed. The engine is
now at TC compression stroke.
Table 4
TC Compression
Stroke
Inlet Valves
Exhaust Valves
Valve Lash
0.35 mm
(0.014 inch)
0.45 mm
(0.018 inch)
Cylinders
1-2-4
1-3-5
3.
Measure the valve lash for the valve when the
engine is at TC compression stroke according to
Table 4 . If necessary, make an adjustment to the
valves according to Table 4 .
a.
Loosen the valve adjustment screw locknut
that is on the adjustment screw (1).
b.
Place an appropriate feeler gauge (2) between
the rocker arm and the valve. Turn the
adjustment screw (1) while the valve
adjustment screw locknut is being held from
turning. Adjust the valve lash until the correct
specification is achieved.
c.
After each adjustment, tighten the valve
adjustment screw locknut while you hold the
valve adjustment screw (1) from turning.
4.
Rotate the crankshaft in the direction of engine
rotation to TC exhaust stroke (360° from TC
compression stroke).
Table 5
TC Exhaust
Stroke
(1)
Inlet Valves
Exhaust Valves
Valve Lash
0.35 mm
(0.014 inch)
0.45 mm
(0.018 inch)
Cylinders
3-5-6
2-4-6
(1)
360° from TC compression stroke
5.
Measure the valve lash for the valves when the
engine is at TC exhaust stroke according to Table
5 . If necessary, make an adjustment to the valves
according to Table 5 .
a.
Loosen the valve adjustment screw locknut
that is on the adjustment screw (1).
b.
Place an appropriate feeler gauge (2) between
the rocker arm and the valve. Turn the
adjustment screw (1) while the valve
adjustment screw locknut is being held from
turning. Adjust the valve lash until the correct
specification is achieved.
c.
After each adjustment, tighten the valve
adjustment screw locknut while you hold the
valve adjustment screw (1) from turning.
6.
Install the valve mechanism cover. Refer to
Disassembly and Assembly, “Valve Mechanism
Cover - Install” for the installation procedure.
i04103769
Valve
Depth
-
Inspect
Table
6
Required Tools
Tool
Part Number
Part Description
Qty
A
21825617
Dial gauge
1
B
21825496
Dial gauge Holder
1
Illustration 31
g01201916
Typical example
1.
Ensure that the face of the valves are clean.
Ensure that the bottom face of the cylinder head is
clean. Ensure that the cylinder head is not
distorted. Refer to Systems Operation, Testing and
Adjusting, “Cylinder Head - Inspect” for the
procedure to measure flatness of the cylinder
head.
2.
Use the Tooling (A) to check the depths of the inlet
valves and the exhaust valves below the face of
the cylinder head. Use Tooling (B) to zero Tooling
(A).
32
UENR0617
This document has been printed from SPI2. NOT FOR RESALE.