Suzuki Swift Twin Cams Marking alignment?

Answer 1

　

　

　

　

　

　

　

How to Align Twin Cams or DOHC on a Suzuki Swift GT (1993).

　

　

Before you begin the rotation of the Camshafts, rotate your

Engine using your starter to determined which direction you

Crankshaft normally turns. This direction will be used in all

Rotations of both the Crankshaft and the Timing Cams Gears!

The first thing you need to do is make sure you Engine is a Non-

Interference engine Or a Interference engine. Most Suzuki models are the Non-Interference. Toyotas, 1990 Corollas are non-Interference or Non-Detructive Engine too.

Because most engines build after 1990 are Non-Interference

Engines its safe to rotate the Camshafts independently .

　

The part number for your Timing belt will say which kind

You engine is. Just do a research on your Timing belt's part number.

In Interference engines if they are Twin Cams or Dual Over Head Cams, ( DOHC).

If the Cams are miss aligned the Valves will run into the Pistons and cause Internal damage to the valves themselves or the pistons

Will be damaged.

　

If you have a service manual for your engine, them go the

Engine Overhaul section and look at the pistons, if the pistons

have a recess indentation for the valves then your engine is

A non-interference engine.

Since the probability that during

The life the engine the timing belt may break, most engine

Manufactures has added this protection to there engines.

　

If you are still unsure what you engines situation is, just very slowly, carefully rotate you engines crankshaft until you notice some resistance where your rotations come to dead stop. Then stop at this Point.

Then this condition is maybe because you have the transmission in

Gear or one of the Valves has made contact with one of the Pistons

At this point I suggests you seek professional help in the alignment

Of both cams Of a Engine that is Interference type engine.

However, if you are a skilled mechanic then very carefully follow the procedure below.

To correct this situation remove the timing belt from both cams or DOHC.

The correct positions for both cams for the Intake cams and Exhausted Cams. The adjustment as follows;

You will need to remove the Timing Belt cover. In order to

Remove the timing belt cover, you will need to remove the

Crankshaft Pulley and Crankshaft gear.

Now this process is rather difficult to do. On the back to the

Crankshaft pulley there is a hole that lines up when you have it in

turned to The number on piston's compress stroke. You lock crankshaft by place a

Piece of steel in the hole this prevents the crankshaft from

Rotating while you loosen the crankshaft bolt.

In my situation, was unable to remove the crankshaft pulley,

Tying to lock the crankshaft pulley was very hard to do.

Instead I broke of the bottom of the plastic timing belt cover

This gave access to the timing belts tensional cam.

I also, had access to the water pump which I removed and replaced

　

For alignment of the Camshafts it not necessary to completely

Remove the Timing belt. Just loosen the tension cam and the

Timing belt can be removed from both cam gears.

The Intake Cam should be place so that Dot and the letter i is

pointing to the timing the Engine block. The Intake Cam is the camshaft that located close the Fuel Inject System or closet to the you car's Fire Wall.

So turn the cam with the timing belt off and it should be a soft click felt.

There with be resistance and it will click in four positions. So rotate the intake cam until its in the 12 O'clock position with the Timing Mark on the camshaft, this mark is a DOT THAT RIGHT ABOVE THE LETTER I. Make sure its pointing to at the top of the Cam's Gear 12 O'clock POSTION.

And the DOT and LETTER I is align with the timing mark on the Engine block. Remember on the camshaft's the dot is above the letter I On the Intake camshaft.

The Exhaust or Outer Cam the next to the engine's grill. Facing the

Very front of the engines Air Filter housing.

Now the Timing Mark on the Outer Cam is a Dot which is above an "E" for the outer camshaft.

Follow the same procedures for rotation of the Intake Camshafts

Alignment procedure, listed above in this text.

The difference is that on the Exhausted camshaft the timing mark is

A Dot that is place over and "E" for the outer camshaft gear.

And this timing mark on the camshaft's gear should be in the 12' O'clock position aligning with a mark on the engine block.

Once you completed the adjustment of both Twin cams or DOHC. Leave both cam gears alone and do not move them again.

Remove all Four spark plugs. Removal of the spark plugs lets the

Crankshaft turns easily.

Keep the timing belt off and now rotate the crankshaft in the same

Direction the engine turns. Rotate the crankshaft until the number one piston is in the compression stroke.

Remove the Distributor cap and check to see if its pointing at the

Number one cylinder. If not continue the rotation until the distributor is beginning or is pointing at the number one spark plug or is actually pointing the number one cylinder.

Now stop your rotation, and check to see if the timing mark on the

Crankshaft pulley is pointing to the timing scale that was on the timing belts cover. Just rotate the crankshaft until its at the compress stroke for the number one piston, simple set the timing mark on the crankshafts pulley to your engines specs.

Most Four Cylinder Timing is set to 10 degree before top dead center (10 BTDC) For, 1993 Suzuki Swift GT, 1300L Twin Cams or DOHC.

The actually timing degrees is on a piece of paper attack under

The hood of your car and the timing degrees setting may

Vary for engine to engine so check and make sure you have

The crankshaft timing pulley set correctly.

The Timing adjustment is 6 degrees before TDC. For a Suzuki Swift GT 1300L. When you complete the crankshaft and have the timing pulley on the crankshaft point to the correct timing mark.

Install the timing belt back onto the camshafts.

Installation of the timing belt is a bit tricky. You need to put everything that belong to the timing belt back together to install

The timing belt. With the timing belt "Tensioned Cam" installed use you hand To put the timing belt back on the two cam gears.

Do not try to pry the belt back with any kind of tools.

Using a tool could damage the timing belt. and all your affords

Will be lost.

The timing belt will go back on the timing cams gear. The trick is

You have to place one end of the timing belt so its sits at the very

Edge to the camshafts gear you can use either cams to start your timing belts installation. OK…

Now place the timing belt at the very edge or the begin edge of the

Camshaft's gear. Hold it with one hand and slip the other part of the timing belt on the edge of the other timing camshaft's gear.

But installing the belt near the front edge of the camshaft's gear give the belt give the belt more length, And the belt will slip back on to the camshafts gears.

When you start make sure the timing belt is on one for the two camshafts gears. the first twin cams gear or the DOHC gear. Hold it very tightly with one hand while slipping the other part of the timing belt on to the very front of the other

Timing camshaft gear.

You have to be very strong to do this procedure all by yourself

If you need to get a helper to hold the belt while you slip the

Other end on the second camshaft's gear.

If you place the timing belt on the camshaft edge of the gear you can slip the other end on to the second timing camshaft' gear.

These gears, the timing camshaft gear are very wide about an inch and a quarter inch in thickness, ( about the same thickness as the timing belt) you want to place the first part of timing belt just the very edge about an eighth of an inch on the first

Camshaft pulley gear.

　

　

　

As the belt fits into the teeth of the timing camshaft. No more than

An eighth on an inch on to the camshafts gear. Next hold the first part with your hand while sliding the second part of the belt on to the second camshaft's pulley gear.

If you hold the first part of the timing belt onto the pulley's gear

And slowly align the second part of the timing belt so it aligns with

The teeth of the second pulley's gear the belt will slip back on.

Hence, by placing the timing belt near the pulley's gear edge give the belt the extra length that is need to re-stall the Timing Belt.

The first attempt the belt will slip off the first pulley, cause you did

Not hold it tightly or you put the belt is not at right the edge of the pulley or there is to much slack in the belt.

And do not pull on the belt to much cause the crankshaft is actually start turning and you have to go and put back to the correct timing mark the crankshaft's pulley.

　

If you do as I have instructed the timing belt will slip back on both

Camshafts gears.

By first placing the timing belt on at the very edge of the timing gear, this procedure give the belt the extra length it needs to install

Back on both camshafts.

Once you have the timing belt installed. To check to see if everything is in order you need to check each cylinder for

Compression.

Start with the engine's cylinder firing order and place a compression gauge into each cylinder while rotating the crankshaft.

There be hardly no compress read on the pressure gauge. Instead you will see a quick deflection on the pressure gauge's meter reading.

The quick deflection is because the engine is high preformance

The exhausted valves open for just a very short period in time.

Rotation of the crankshaft by hand causes just a short quick deflection on the pressure gauge meter.

Once you have completed the above procedure, you have aligned

Both camshafts in timing with the position of the crankshaft's timing.

Put the hold engine back together and crank the engine with the

Key and it should start up.

So you be "back on the road again".

OK…