AEM 23-831BK Tru-Time Adjustable Cam Gear User Manual

Page 3

Figure 1A and 1B

Read and understand these instructions BEFORE attempting to install this
product. See reference to diagrams on back page.

1. The procedure to change the gears is identical to the timing belt replacement procedure

outlined in the factory service manual.

2. Obtain a suitable box or container to hold the hardware that will be removed from the

engine during this installation. This will aid in the prevention of lost nuts and bolts.

3. Disconnect the negative battery terminal before starting these procedures.

4. Removal of cam cover

(a) Remove the top center cover.

i) Clean the area underneath the center cover. This is to ensure that you do not allow

any debris to contaminate the engine internals.

(b) Remove the spark plug wires from the spark plugs but do

not remove the spark plugs at this time. Set the spark plug
wires away from the area of work.

i) The removal of the spark plugs will make it easier to

rotate the engine by hand. Care should be taken not to
allow any small items to fall into the open spark plug
holes while you continue to install the cam gears. Lay
a rag over the open spark plug holes.

5. Removal of timing belt front covers

(a) Raise the front of the vehicle and

support it using properly rated jack
stands. It is important for safety
reasons to use adequate supporting
equipment to prevent injury or
damage to the vehicle.

(b) Remove the front left wheel.
(c)

From underneath vehicle, remove
inner debris shield from inside fender
well.

(d)

From the engine compartment,
remove all drive belts (a/c,
alternator/power steering belts), and
the water pump pulley set.

(e) Put a jack underneath the engine for support and remove the front engine mount, the

a/c idler pulley, and remove the front center cover.

(f) From underneath, remove the crankshaft pulley and then remove the front lower cover.

6. Removing the timing belt

(a) Rotate the crankshaft so that the number 1 piston is at TDC on compression. Verify that

the camshafts are in proper timing for this position. Fig 2A.
i) The dowel pins near the center of each gear will close to the 12 o’clock position.