Question about Isuzu Rodeo
Fan belt slack cant access bolt on tensioner to slcken off to adjust
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Posted on Jan 02, 2017
SOURCE: squealing belt
Causes of problem like yours can be:
Posted on Nov 24, 2008
normally you can take a 1/2inch breaker bar and insert it in the hole on the tensioner pull down and take the belt off the alternator and also try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you
Posted on Mar 21, 2009
That should be right if it is an idler pulley. On belts that do not have idler pulley you will have to loosen lock bolt on adjuster. Like alternator
Posted on Mar 24, 2009
The serpentine belt tensioner / pulley is on the front of the engine, and part of the belt 'routing'.
Its job is to put tension on the belt as it drives the other devices like the power steering pump, water pump, air conditioning compressor.
It is an aluminum casting that mounts with a single bolt to the engine. The pulley is attached to the arm.
There are a few ways to move / pry the arm inwards, thus releasing the tension on the belt for removing/installing: grab on the pulley bolt (15mm?) with a wrench, or some later models have an opening for a 3/8th socket wrench to attach to directly without a socket.
Posted on May 10, 2009
first of all you don't have to loosen the pulley,this will no solve the problem,well you already loosen the adjuster,good,bot thing you have not done i will tell you now,on the power steering pump where the belt pass there is also a bolt that hold it ,you must loosen that also,then after you will see the pump moving on the two position that means you will see the belt loosen on 1 position an d the position it will tight the belt,try that man.............
Posted on Aug 23, 2009
Tips for a great answer:
Jun 17, 2015 | 2006 Mitsubishi Pajero 3.2
Belt tension is very important, as a belt that is too tight will put too much stress on the bearings of the components it drives, causing them to wear out prematurely. A belt that is too loose will slip, causing (1) the belt to wear out quickly due to friction heat, and (2) inefficient alternator, air pump, cooling fan or air conditioner operation because much of the turning power supplied by the main drive pulley is lost.
The belts should be inspected and/or adjusted at 2,000 miles (3,221 km) and then every 4,000 miles (6,441 km). First, make sure that the belt is properly positioned in the pulley. Check the pulleys for damage. Inspect the belts for cracks and signs of fraying. These usually develop on the inner surface and extend into the backing or outer surface of the belt. Check also for glazing, a completely smooth appearance which indicates slippage. A belt that is in good shape will have a slightly grainy appearance like cloth. Replace belts that show cracks or glazing.
Check belt tension. Apply pressure with your thumb at the mid-point between two pulleys, and the belt should stretch or deflect about 1 / 4 - 1 / 2 in. (6-13mm). If the belt is too tight or too loose, adjust/replace as necessary.
See Figures 1, 2 and 3
To adjust belts, first locate the mounting bolt on the air pump or alternator (each has its own belt and adjusts to permit that belt to be tensioned correctly). This bolt attaches the unit to the engine and has a nut on the end. Put a wrench on either end and loosen the bolt until there is practically no tension on it. Then, loosen the adjusting bolt, which is located on the opposite side of the unit and which passes through a slot. Pull the alternator or air pump away from the engine and tighten the adjusting bolt just enough to hold the unit while you check tension. Repeat the adjustment procedure until the belt deflects the proper amount, then fully tighten the adjusting and mounting bolts. Avoid too much belt tension or overtightening of bolts. A new belt should be tensioned just slightly more (about 0.4 in. or 10mm deflection) and checked after several hundred miles of operation to make sure that tension is still adequate. (Tension is lost very rapidly until a new belt is broken in.)
Fig. Fig. 3: On some GLC engines equipped with power steering, the pump pulley uses a slotted adjusting bar, adjusting bolt and locknut to adjust belt tension
Late model GLCs, 323s, 626s, MX-6s and 929s may use an adjusting bolt on either the idler pulley (a pulley which is not directly associated with any of the accessories) or on the power steering pump itself. This bolt makes adjustment much easier because you don't have to hold the accessory under a great deal of tension while tightening the mounting bolts.
On models where the idler pulley has a locknut at its center, simply loosen the locknut, then turn the adjusting bolt clockwise to increase belt tension or counterclockwise to decrease it or remove the belt. Do not forget to retighten the locknut when tension is correct, or vibration may cause it to fall off. Recheck the tension with the locknut tightened and readjust if necessary.
To adjust the power steering pump pulley on the GLC, loosen the slotted adjusting bar bolt, the mounting bolt across from it, and the locknut at the bottom of the adjusting bolt. Turn the adjusting bolt counterclockwise to remove the belt or reduce tension, and clockwise to increase it. When tension is correct, tighten the adjusting bolt locknut, adjusting bar bolt, and pump mounting bolt.
On 626, MX-6 and 929 models with a 4-ridge or 5-ridge ribbed type V-belt driving both the air conditioner and power steering pump, belt tension is much greater. With a used belt, deflection should only be about 1 / 4 in. (6.35mm).
See Figures 4, 5 and 6
The RX-7 may be equipped with as many as three or four separate drive belts. The belts are arranged at the front of the engine and drive the cooling fan/water pump, alternator, power steering pump, emission control air pump and air conditioner compressor (if so equipped).
Fig. Fig. 4: Checking belt tension on 1979-85 RX-7
Check the tension of each belt at the arrows numbered 1, 2, 3 and 4 (depending on year) shown in the illustration. Press on the belt with your thumb using moderate pressure (about 22 lbs.). The belts should give or deflect the amounts shown in the chart.
Fig. Fig. 6: RX-7 belt deflection limits
Use the following appropriate procedure and illustration to make drive belt adjustment(s).
ALTERNATOR AND AIR PUMP
See Figure 7
Fig. Fig. 7: Adjusting alternator drive belt tension on 1986-89 RX-7
When prying on the alternator or air pump, make sure the prybar is anchored against the engine case and not against a component (distributor cap, etc.) which could break.
Fig. Fig. 8: Adjusting air conditioning compressor drive belt tension on 1986-89 RX-7
Fig. Fig. 9: Adjusting power steering pump drive belt tension on 1986-89 RX-7
REMOVAL & INSTALLATION
May 27, 2012 | 1989 Mazda 323
remove #1 spark plug.
Rotate the engine so that No. 1 cylinder is at Top Dead Center (TDC) on the compression stroke. Check that the timing marks are aligned on the camshaft and crankshaft pulleys. An access plug is provided in the cam belt cover so that the camshaft timing can be checked without removal of the cover or any other parts. Set the crankshaft to TDC by aligning the timing mark on the crank pulley with the TDC mark on the belt cover. Look through the access hole in the belt cover to be sure that the timing mark on the cam drive sprocket is aligned with the pointer on the inner belt cover.
Always turn the engine in the normal direction of rotation. Backward rotation may cause the timing belt to jump time, due to the arrangement of the belt tensioner.
Drain cooling system. Remove the upper radiator hose as necessary. Remove the fan blade and water pump pulley bolts.
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
Loosen the alternator retaining bolts and remove the drive belt from the pulleys. Remove the water pump pulley.
Remove the power steering pump and set it aside.
Remove the 4 timing belt outer cover retaining bolts and remove the cover. Remove the crankshaft pulley and belt guide.
Loosen the belt tensioner pulley assembly, then position a Camshaft Belt Adjuster tool T74P-6254-A, or equivalent, on the tension spring roll pin and retract the belt tensioner away from the timing belt. Tighten the adjustment bolt to lock the tensioner in the retracted position.
If the belt is to be reused, mark the direction of rotation on the belt for installation reference.
Remove the timing belt.
Camshaft, auxiliary shaft and crankshaft timing belt sprocket alignment mark locations-Mazda B-Series Pick-Ups 2.5L (VIN C) engines
Install the new belt over the crankshaft sprocket and then counterclockwise over the auxiliary and camshaft sprockets, making sure the lugs on the belt properly engage the sprocket teeth on the pulleys. Be careful not to rotate the pulleys when installing the belt.
Release the timing belt tensioner pulley, allowing the tensioner to take up the belt slack. If the spring does not have enough tension to move the roller against the belt (belt hangs loose), it might be necessary to manually push the roller against the belt and tighten the bolt.
The spring cannot be used to set belt tension; a wrench must be used on the tensioner assembly.
If any binding is felt when adjusting the timing belt tension by turning the crankshaft, STOP turning the engine, because the pistons may be hitting the valves.
Rotate the crankshaft 2 complete turns by hand (in the normal direction of rotation) to remove slack from the belt. Tighten the tensioner adjustment to 26-33 ft. lbs. (35-45 Nm) and pivot bolts to 30-40 ft. lbs. (40-55 Nm). Be sure the belt is seated properly on the pulleys and that the timing marks are still in alignment when No. 1 cylinder is again at TDC/compression.
Install the crankshaft pulley and belt guide.
Install the timing belt cover.
Install the water pump pulley and fan blades. Install the upper radiator hose if necessary. Refill the cooling system.
Install the accessory drive belts.
Start the engine and check the ignition timing. Adjust the timing, if necessary.
Jan 10, 2012 | 1999 Mazda B2500
Fig. Accessory drive belt routing-2.7L engine
Chrysler Cirrus & Sebring Convertible; Dodge Stratus; Plymouth Breeze
Fig. Accessory drive belt routing-Chrysler 2.7L engine
A/C & Alternator Belt
Fig. Installing A/C & alternator belt-2.7L engine
Oct 27, 2011 | Cars & Trucks
Fig. 1: Exploded view of the timing belt cover on the 2.0L and 2.3L engine
Fig. 2: Exploded view of the timing belt assembly on the 2.0L and 2.3L engine
Fig. 3: Releasing the timing belt tensioner using a special tool
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Place a drain pan under the radiator and drain the coolant from the radiator.
Squeeze the spring clamp holding the upper radiator hose to the radiator fitting with a pair of rib joint pliers and slide the clamp towards the engine.
Twist and pull the upper radiator hose off the radiator.
Remove the fan blade using a ratchet, ratchet extension and socket.
Rotate the belt tensioner pulley using a breaker bar and remove the drive belt.
Detach the water pump pulley using a ratchet, ratchet extension and socket.
Pry off the access plug from the upper part of the timing belt cover using a small standard screwdriver.
Set the transmission to Neutral and apply the Parking brakes.
Rotate the crankshaft pulley with a ratchet, ratchet extension and socket to align the "O" mark on the crankshaft pulley and the "O" mark on the belt cover.
Look through the cover access hole. If you see another timing mark on the camshaft sprocket aligned with the mark on the inner belt cover, cylinder number 1 is at Top Dead Center (TDC). If not, rotate the crankshaft one complete turn again and check for the alignment marks.
Unscrew the four mounting bolts and the Phillips screw next to the access plug from the timing belt cover using a ratchet, ratchet extension and socket and Phillips screwdriver.
Detach the crankshaft pulley using a ratchet, ratchet extension and socket and remove the belt guide (large washer) from behind the crankshaft pulley. You may need a pulley remover to take the crankshaft pulley off. If so, you can rent one from most auto parts stores.
Loosen the adjusting bolt on the tensioner pulley assembly using a ratchet, ratchet extension and socket.
Rotate the tension spring rollpin (this is the screw next to the adjuster bolt on the tensioner pulley assembly) away from the timing belt using timing belt tensioner wrench number T74P-6254-A. As you hold the timing belt loose, tighten the assembly adjuster bolt to lock the tensioner using the ratchet, ratchet extension and socket. Now remove the tensioner wrench.
Remove the timing belt.
Install the new timing belt starting at the crankshaft sprocket. Route the belt in a counterclockwise direction over the auxiliary and camshaft sprockets. Properly engage the belt lugs on the sprockets' teeth and keep any slack on the belt to the right side, between the crankshaft and camshaft sprockets. Make sure not to rotate any of the sprockets as you install the timing belt.
Loosen the adjuster bolt on the tensioner pulley assembly so the tensioner rolls against the belt. If necessary, push the tensioner pulley against the belt with a large standard screwdriver to remove any remaining slack on the belt.
Make sure the transmission is in the Neutral position and the Parking brakes are engaged.
Rotate the crankshaft two complete revolutions so that cylinder No.1 is back in TDC. This will help to tighten the timing belt on the sprockets.
Tighten the adjuster bolt on the tensioner pulley assembly between 14- and 21-foot lbs. (19.0 to 29.0 Nm) using a torque wrench.
Tighten the tension-spring bolt between 28- and 40-foot lbs. (38.0-54.0 Nm) using the torque wrench.
Install the belt guide (large washer) and the crankshaft pulley. Tighten the pulley bolt with the ratchet, ratchet extension and socket.
Install the timing belt cover with a new gasket using the ratchet, ratchet extension and socket and Phillips screwdriver.
Reinstall the water pump pulley, drive belt, fan blade and upper radiator hose.
Refill the cooling system with coolant.
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