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How do i realign the timing belt marks on the cam pulleys

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  • Cars & Trucks Master
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Posted on Dec 06, 2014

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Hi all. I need to replace cam and timing belt on 2.5 microbus, but don't know position of cams. Was removed before it was brought to me. Please advise... with pics if possible.


if a diyer on other jobs will you may need the repair manual

26326761-ogjx3hr4xss2hzdmdfmqnvvj-5-0.jpg Note; all gears must be line up correctly or engine damage will occur. after you install the timing belt spin crank pulley 2 revolutions and all marks should line back up, if not then realign,

26326761-ogjx3hr4xss2hzdmdfmqnvvj-5-1.png

Oct 25, 2016 | Cars & Trucks

1 Answer

I need the timing marks for belt replacement on the 1.6L SOHC 1990 Geo Prizm


1.6 engine, timing belt. 4A not 4AF. F = twin cam.
V.I.N. code 6 not 5, the 5is twin cam 4AFE twin.
the car is a Corolla, and as such info is easy to find on toys,
so that the engine real name is.
http://en.wikipedia.org/wiki/Toyota_A_engine#4A

so you dont want all the facts? marks and how to set tension correctly? really? at #12 and 18?
getting all this right, makes it GO 60k more miles, (a fact)

the words.
  1. Remove the timing belt covers using procedures described earlier in this section.
  2. If not done as part of the cover removal, rotate the crankshaft clockwise to the TDC/compression position for No. 1 cylinder.
  3. Loosen the timing belt idler pulley to relieve the tension on the belt, move the pulley away from the belt and temporarily tighten the bolt to hold it in the loose position.
  4. Make matchmarks on the belt and both pulleys showing the exact placement of the belt. Mark an arrow on the belt showing its direction of rotation.
  5. Carefully slip the timing belt off the pulleys.
  6. dont move cam, with belt off it warns.
  7. Remove the idler pulley bolt, pulley and return spring.
  8. Use an adjustable wrench mounted on the flats of the camshaft to hold the cam from moving. Loosen the center bolt in the camshaft timing pulley and remove the pulley.
  9. Check the timing belt carefully for any signs of cracking or deterioration. Pay particular attention to the area where each tooth or cog attaches to the backing of the belt. If the belt shows signs of damage, check the contact faces of the pulleys for possible burrs or scratches.
  10. Check the idler pulley by holding it in your hand and spinning it. It should rotate freely and quietly. Any sign of grinding or abnormal noise indicates replacement of the pulley.
  11. Check the free length of the tension spring. Correct length is 38.5mm measured at the inside faces of the hooks. A spring which has stretched during use will not apply the correct tension to the pulley; replace the spring.
  12. If you can test the tension of the spring, look for 8.4 lbs. of tension at 50mm of length. If in doubt, replace the spring.
  13. Reinstall the camshaft timing belt pulley, making sure the pulley fits properly on the shaft and that the timing marks align correctly. Tighten the center bolt to 43 ft. lbs.
  14. Before reinstalling the belt, double check that the crank and camshafts are exactly in their correct positions. The alignment mark on the end of the camshaft bearing cap should show through the small hole in the camshaft pulley and the small mark on the crankshaft timing belt pulley should align with the mark on the oil pump.
  15. Reinstall the timing belt idler pulley and the tension spring. Pry the pulley to the left as far as it will go and temporarily tighten the retaining bolt. This will hold the pulley in its loosest position.
  16. Install the timing belt, observing the matchmarks made earlier. Make sure the belt is fully and squarely seated on the upper and lower pulleys.
  17. Loosen the retaining bolt for the timing belt idler pulley and allow it to tension the belt.
  18. Temporarily install the crankshaft pulley bolt and turn the crank clockwise 2 full revolutions from TDC to TDC. Insure that each timing mark realigns exactly.
  19. Tighten the timing belt idler pulley retaining bolt to 27 ft. lbs.
  20. Measure the timing belt deflection (Tool 23600 B or similar), looking for 5-6mm of deflection at 4.4 pounds of pressure. If the deflection is not correct, readjust the idler pulley by repeating steps 15 through 18.
  21. Remove the bolt from the end of the crankshaft.
  22. Install the timing belt guide onto the crankshaft and install the lower timing belt cover.
  23. Continue reassembly of the timing belt covers as outlined previously in this section.


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Mar 26, 2015 | 1990 Geo Prizm

1 Answer

I fouled up the timing on my 1990 Subaru Legacy Wagon. Tried resetting it to the factory specs but it still wont start.


You have not set it to the factory spec, and its probably 180 degrees off. Rotate the crank to top dead center (the mark on the crank toothed pulley, align the cam timing marks, refit the belt THEN release the tensioner. Rotate the engine manually to verify that all the timing marks realign themselves.

Jan 19, 2014 | 1990 Subaru Legacy

1 Answer

I want to change timing belt for microbus 2.6 but i am not shore about the mark on the cam


We do not have micro bus here, but i can tell you that a timing component kit comes with a small book with marks and some directions, another way is to line engine up at top dead center and mark gears before removal, Note; all gears must be line up correctly or engine damage will occur. after you install the timing belt spin crank pulley 2 revolutions and all marks should line back up, if not then realign,

Sep 30, 2012 | Cars & Trucks

1 Answer

Set timing on a 98 honda civic dx


"The crankshaft timing pointer must be perfectly aligned with the white mark on the flywheel or flex-plate; the camshaft pulley must be aligned so that the word UP is at the top of the pulley and the marks on the edge of the pulley are aligned with the surfaces of the head.
Install the timing belt over the pulleys and tensioners.
Loosen the bolt used to lock the timing belt tensioner. Loosen, then tighten the timing belt adjusting nut.
Turn the crankshaft counterclockwise until the cam pulley has moved 3 teeth; this creates tension on the timing belt. Loosen, then tighten the adjusting nut and tighten it to 33 ft. lbs. (45 Nm). Tighten the bolt used to lock the timing belt tensioner.
Realign the timing belt marks, then install the balancer belt drive sprocket on the crankshaft.
Align the front balancer pulley; the face of the front timing balancer pulley has a mark, which must be aligned with the notch on the oil pump body. This pulley is the one at 10 o'clock to the crank pulley when viewed from the pulley end.
Align the rear timing balancer pulley (2 o'clock from the crank pulley) using a 6 x 100mm bolt or rod. Mark the bolt or rod at a point 2.9 in. (74mm) from the end. Remove the bolt from the maintenance hole on the side of the block; insert the bolt or rod into the hole. Align the 2.9 in. (74mm) mark with the face of the hole. This pin will hold the shaft in place during installation.
Install the balancer belt. Once the belts are in place, be sure that all the engine alignment marks are still correct. If not, remove the belts, realign the engine and reinstall the belts. Once the belts are properly installed, slowly loosen the adjusting nut, allowing the tensioner to move against the belt. Remove the pin from the maintenance hole and reinstall the bolt and washer.
Turn the crankshaft 1 full turn, then tighten the adjuster nut to 33 ft. lbs. (45 Nm). Remove the bolt used to lock the timing belt tensioner."

" " Chilton Library

Apr 27, 2012 | 1998 Honda Civic

1 Answer

What is the posistion for the timing chain for a 1998 acura tl


Curtis: The Acura TL had two different engines in it. Neither used timing chains.
Settings for the timing belts are as follows: this is on the 2.5 liter.
Before you pull it apart, break the front crank pulley bolt loose.
Line up the white mark on the pulley with the pointer on lower cover.
Berfore you pull the crank pulley, break the cam bolt loose.
Recheck the crank pulley marks with pointer. Remove the obvious to gain access to the timing covers.
NOTE, if you look at the cam gear will have the word "up" should be on the up side. There should be notches cut on opposite sides of the gear which should line up perfectly with the timing cover... You should have a timing belt tensioner still in place before, when you do your initial check.
After you remove the crank pulley and the timing cover, the woodruff key should be at 12:00 PM
You will also see if you look closer, at the gear. a punch mark, above the woodruff kny. There is an arroe cast into the block. This assures you that you have maintained alignment.

On the 3.2 V-6 same scenario. Remove all the **** surrounding your access to the timing covers and belt. After getting the front crank bolt loose, realign the timing marks to bring it to TDC (Woodruff key @ 12:00 PM) In changing the timing belt on this engine, remove the belt tensioner and you should be able to install the belt without removing the gears.
The right (passengers side) cam gear has a notch cut in the outside edge of the gear. There should be an alignment mark just behind it if you have it set fairly close.The drivers side should be the same.On both engines, make sure when you install the belt, the drivers side is ligned up perfectly and the belt is tight between the left side of the sprocket and the crank gear. Run the belt over to the other cam, making sure the cam is still ligned up. the belt without the tensioner will be real sloppy. Get a small clamp you can place to hold the belt in place on the right cam until you have the tensioner in place.
In checking on both of these engines, they are not intereference fit motors, in short, they are not prone to bending valves. Good luck.

Aug 03, 2011 | Acura TL Cars & Trucks

3 Answers

How to set timing when you relesh tensioner and it changes the alignment postion of pullies 2000 ford ranger 2.5 l


Here is the trick. Align marks. Put the timing belt on the crank shaft pulley first, and after on the overhead cam pulley. Release tensioner and rotate the crank shaft till the timing belt makes two full circles. Try to align marks, you will be at least one tooth off. Align the crank shaft on the mark, and find out how many teeth you are off at the cam shaft pulley. Count the teeth. Remove the timing belt from cam shaft pulley only. Move cam shaft pulley in reverse according to the number of teeth you counted. Make sure the crank shaft pulley is on the mark. Mount the belt at cam shaft pulley.Rotate the belt two circles and check the marks. Repeate this procedure til after releasing the tensioner, and rotating the timing belt two full circles, the mars will be align.

Nov 22, 2010 | 2000 Ford Ranger SuperCab

1 Answer

How to set the time belt?


4 Cylinder diesel(4JX1) :
1 - Timing mark
2 - Cam pulley
3 - HP Oil pump pulley
4 - Tensioner pulley


suzman_0.jpg

6 Cylinder petrol:
Align crank(C) timing notch mark (1) to oil pump mark.
Align cam pulley(L+R) marks(3) to cylinder head marks
The cam belt has 3 marks, 2 lines and one mark that is actually a row of dots. Align the dots to the crank pulley groove mark(2) and align the other 2 lines to the cam pulley marks. Using a clothes peg to hold the belt to the cam pulleys works wonders to keep it in place while fitting. Please note the arrows on the belt and have them point in the direction of rotation - right to left side of engine
W - water pump pulley
I - Idler pulley
T - Tensioner pulley.

If for some reason you need to realign the cams on each bank :
Standing in front of the car and starting from YOUR left , looking at the cams you should see RE, RI, LI, LE on each of the camshafts.(R for right bank, L for left bank, I for intake and E for exhaust) Right bank camshafts are marked with one dot, left bank with 2 dots on the shaft itself. To align the camshafts to each other each cam shaft gear has a mark on it. Draw an imaginary line between the centre of the camshaft and the centre of the pulley. The alignment mark should be between the two along this imaginary line. The result will be that RI an RE will be at the top of each gear. The same with the left bank.


suzman_2.jpg

Nov 08, 2010 | 1998 Isuzu Rodeo

2 Answers

Timming bailt marks for 1990 plym laser rs


REMOVAL & INSTALLATION 1.8L Engine
  1. If possible, position the engine so the No. 1 piston is at TDC.
  2. Disconnect the negative battery cable.
  3. Remove the timing belt covers.
  4. Remove the timing (outer) belt tensioner and remove the outer timing belt.
  5. Remove the outer crankshaft sprocket and flange.
  6. Remove the silent shaft (inner) belt tensioner and remove the belt. Fig. 1: Silent shaft belt timing marks — 1.8L engine 89573g93.gif
    Fig. 2: Checking the silent shafts for proper positioning 89573g94.gif
    Fig. 3: Timing belt timing mark alignment — 1.8L engine 89573g95.gif
    To install:
  7. Align the timing marks of the silent shaft sprockets and the crankshaft sprocket with the timing marks on the front case. Wrap the timing belt around the sprockets so there is no slack in the upper span of the belt and the timing marks are still aligned.
  8. Install the tensioner pulley and move the pulley by hand so the long side of the belt deflects about 1⁄4 in.
  9. Hold the pulley tightly so the pulley cannot rotate when the bolt is tigthened. Tighten the bolt to 15 ft. lbs. (20 Nm) and recheck the deflection amount.
  10. Install the timing belt tensioner fully toward the water pump and tighten the bolts. Place the upper end of the spring against the water pump body.
  11. Align the timing marks of the camshaft, crankshaft and oil pump sprockets with their corresponding marks on the front case or rear cover. NOTE: There is a possibility to align all timing marks and have the oil pump sprocket and silent shaft out of time, causing an engine vibration during operation. If the following step is not followed exactly, there is a 50 percent chance that the silent shaft alignment will be 180 degrees off.
  12. Before installing the timing belt, ensure that the left side (rear) silent shaft (oil pump sprocket) is in the correct position as follows:
    1. Remove the plug from the rear side of the block and insert a tool with shaft diameter of 0.31 in. (8mm) into the hole.
    2. With the timing marks still aligned, the shaft of the tool must be able to go in at least 2 1/2 in. If the tool can only go in about 1 in., the shaft is not in the correct orientation and will cause a vibration during engine operation. Remove the tool from the hole and turn the oil pump sprocket 1 complete revolution. Realign the timing marks and insert the tool. The shaft of the tool must go in at least 2 1/3 in.
    3. Recheck and realign the timing mark.
    4. Leave the tool in place to hold the silent shaft while continuing.
  13. Install the belt to the crankshaft sprocket, oil pump sprocket, then camshaft sprocket, in that order. While doing so, make sure there is no slack between the sprocket except where the tensioner is installed.
  14. Recheck the timing marks' alignment. If all are aligned, loosen the tensioner mounting bolt and allow the tensioner to apply tension to the belt.
  15. Remove the tool that is holding the silent shaft and rotate the crankshaft a distance equal to 2 teeth on the camshaft sprocket. This will allow the tensioner to automatically apply the proper tension on the belt. Do not manually overtigthen the belt or it will howl.
  16. Tigthen the lower mounting bolt first, then the upper spacer bolt.
  17. To verify correct belt tension, check that the deflection at the longest span of the belt is about 1⁄2 in.
  18. Install the timing belt covers and all related items.
  19. Connect the negative battery cable.

Aug 02, 2010 | 1990 Plymouth Laser

2 Answers

1994 Volvo 940 Station Wagon timing belt


I hope you've solved the problem by now, but there are alignment marks on the crank shaft (top pulley), idler (lower side), and cam shaft (smaller, bottom pulley) which should be aligned with stationary marks on the timing belt rear cover.

The belt has marks that align with the aforementioned marks (lines). The double marks on the belt align with the camshaft marks and the single marks with the others.

Loosen the tensioner clamp (nut) to allow the spring loaded tensioner to press on the belt and retighten the nut.

Rotate the crank shaft (clockwise, probably two revolutions) and make sure the pulley marks realign to the marks on the cover (they don't have to realign with the marks on the belt).

Rotate the crank shaft a full revolution once the belt is on and check that alignment is preserved.

Periodically loosen and retension the tensioner nut (access through a hole in the cover) to ensure that tension is maintained as the belt relaxes.

Oct 25, 2008 | 1994 Volvo 940

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