Scribd
Upload
42 views2 pages

Timing Verification

This document outlines the standard procedure for verifying engine timing on a 3.6L engine, emphasizing the importance of avoiding magnetic interference with timing wheels. It details the steps required to check the alignment of cam phasers and the necessary tools for the procedure. Proper timing verification is crucial to prevent damage to the engine's valves and pistons.

Uploaded by

deenava1230
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
42 views2 pages

Timing Verification

This document outlines the standard procedure for verifying engine timing on a 3.6L engine, emphasizing the importance of avoiding magnetic interference with timing wheels. It details the steps required to check the alignment of cam phasers and the necessary tools for the procedure. Proper timing verification is crucial to prevent damage to the engine's valves and pistons.

Uploaded by

deenava1230
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

09 - Engine, 3.

6L / Valve Timing / Standard Procedure

ENGINE TIMING VERIFICATION


Special Tools: Click to display a list of tools used in this procedure

CAUTION: The magnetic timing wheels must not come in contact with magnets (pickup tools, trays, etc.) or any
other strong magnetic field. This will destroy the timing wheels ability to correctly relay camshaft
position to the camshaft position sensor.

Correct timing is critical for the NON free-wheeling designed


engine. Engine timing can be verified by using the following
procedures:

1. Remove the upper intake manifold and both cylinder


head covers (Refer to 09 - Engine/Cylinder
Head/COVER(S) , Cylinder Head - Removal).
2. Remove the spark plugs (Refer to 08 - Electrical/8I -
Ignition Control/SPARK PLUG - Removal) .

CAUTION: When aligning timing marks, always


rotate engine by turning the crankshaft.
Failure to do so will result in valve or
piston damage.

3. Mount Dial Indicator Set C-3339A (1) to a stationary


point on the engine, such as the cylinder head cover
mounting surface. Position the indicator probe into the
number one cylinder, rotate the crankshaft clockwise (as viewed from the front) to place the number one piston at
top-dead-center on the exhaust stroke and set the indicator dial to ZERO.
4. While maintaining this alignment, verify that the ARROWS (1) on the left side cam phasers point toward each other
and are parallel to the cylinder head cover mounting surface (2) and that the right side cam phaser ARROWS (3)
point away from each other and the SCRIBE LINES (5) are parallel to the cylinder head cover mounting surface
(4).

NOTE: The phaser markings (1 and 3) could align with either an external or internal chain link. Either
alignment is acceptable as long as there are twelve chain pins between the markings.
5. There should be twelve chain pins (2) BETWEEN the exhaust cam phaser triangle marking (1) and the intake cam
phaser circle marking (3) as viewed from either the front or rear of the cam phasers.
6. If the engine timing is not correct (Refer to 09 - Engine/Valve Timing/CHAIN and SPROCKETS, Timing - Removal) .

You might also like