Viking MB455SP lawnmower Drive belt

Michelle. There are several install procedures that vary by vehicle. Different manufactures use different setups some only require releasing tension on the belt tensioner with a 1/2" drive ratchet or breaker bar or most any type pry bar to replace a belt. That set up is usually only on vehicles with a serpentine belt, the big wide flat type of belt that drive most the engine components. Other manufactures may require you to loosen the belt with a wrench of some type via a pulley mounting bolt and then set the tension by wrench adjustment of another bolt that the mounting bolt locks in place. Most of the time its not really a fix to just reattach a jumped belt. Before you go much further you need to first determine why the belt came off. This is not a normal occurrence. There are several possibilities such as: The belt is worn out . . . when a belt wears out it often has reinforcement fibers in it that break causing it to twist and try to run sideways under pressure. This usually results in the belt overheating and/or coming off the pulleys. Reinstalling a belt that behaves this way is a waste of time because it will just come off again. If the belt is more than 3 to 5 years old go ahead and replace it with a new one. The second question is: If the belt is fairly new or only a few years old why did it come off? A likely possibility is that the belt tensioner is worn out and not able to keep the recommended pressure on the belt and/or is twisting out of line with the other pulleys. Either way the tensioner should be replaced with a new one. The third possibility is that one of the components that the belt drives has become misaligned or has a bearing problem cause misalignment and/or overheating of the belt pulley attached to it. Check all components for bearing wear. The pulleys on them should turn smoothy with out sideways play or any roughness. If this is a power steering belt have the suspension and steering component inspected for worn out components causing excessive resistance causing the power steering pump to become overloaded and prematurely wearing out the belt. Just one example is then the vehicle makes popping noised when actually turning the steering wheel usually heard at low speeds but the noise stops when you hold the wheel still even while continuing to drive the vehicle around in a circle. This is often from a failed strut bearing located at the top of a suspension strut or possible from a, or several, under lubricated or failing ball joints.

This should help you ??

SECTION 303-05: Accessory Drive 1999 Escort/Tracer Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 06/06/1998 Accessory Drive Component Locations -2.0L SPI with A/C
Item Part Number Description 1 6B209 Belt tensioner 2 10344 Generator pulley 3 8620 Belt 4 3A733 Power steering pump pulley 5 8678 Belt idler pulley 6 2E884 A/C clutch pulley 7 6316 Crankshaft damper

Component Locations -2.0L SPI without A/C
Item Part Number Description 1 6B209 Belt tensioner 2 10344 Generator pulley 3 8620 Belt 4 3A733 Power steering pump pulley 5 6316 Crankshaft damper

Component Locations -2.0L Zetec
Item Part Number Description 1 10300 Generator pulley 2 19A216 Belt idler pulley 3 3D673 Power steering pump pulley 4 8509 Water pump pulley 5 6B209 Belt tensioner 6 19703 A/C clutch pulley 7 6B320 Crankshaft pulley damper 8 19A216 Belt idler pulley 9 8620 Drive belt NOTE: Drive belts (8620) with automatic drive belt tensioners (6B209) do not require adjustment.
NOTE: When a new drive belt is installed or a drive belt is re-installed after a service procedure, the drive belt does not fully seat into the pulley grooves until engine has run for several minutes.
This vehicle is equipped with:

• a V-ribbed serpentine accessory drive belt.
• an automatic drive belt tensioner.

New drive belts must be of the same type as originally installed.
Check the drive belt condition at 96,000 km (60,000 miles) then after every 24,140 km (15,000 miles).

require to loosen of alternator mount bolts. Slide the alternator towards the rear of the car, this will slacken off the belt. Remove and fit new one. Slide alternator foward untill their is around 10-15 mm deflection in the belt, and tighten alternator mount bolts again

Has it just started with cold weather? Does it squeal at first then as the engine is revved, stop squealing.

If so its probably your alternator belt has worked loose and needs tightening. I'd check this out first, if you've not done it before ask a friend with some know how for guidance. But as a guide, there should be about an inch of give when flexed on the longest run between 2 pulleys, if more then probably needs tightening. If more than a couple of years old, replace with a new one.

If it still squeals after tightening/replacing, you could have a faulty water pump bearing or pulley bearing. Either would require replacement to pre-empt catastrophic failure and resultant engine damage.

alternator and air conditioning compressor

1. Disconnect the negative battery cable.
2. Loosen the idler pulley bolt.

The replacement of the inner belt on multi-belted engines may require the removal of the outer belts.
To replace a drive belt, loosen the adjusting and mounting bolts of the component which the belt is driving. Move the component inward to relieve the tension on the drive belt.
Slip the belt off the component pulley and match the new belt with the old belt for length and width. The old belt will be slightly longer. After a new belt is installed correctly, adjust the tension.

1. Turn the adjustment bolt at the top of the idler pulley bracket. Clockwise rotation will tighten the belt; counterclockwise will loosen it.
   
2. Keep the idler pulley bolt snug (but not tight) while adjusting belt tension. The adjustment bolt should turn with moderate force.

After adjustment is satisfactory, tighten the idler pulley bolt, and then tighten the adjustment bolt.

Reconnect the negative battery cable.

When replacing more than 1 belt, it is a good idea to make note or mark what belt goes around what pulley; this will make installation easier if you mix up the belts.

HI. The diagram you seek is below:

Most vehicles have a belt diagram located under the hood...the tensioner pulley is spring loaded and must be pulled up to get the belt on then released to hold the belt tight. Some front wheel drive vehicles require a tensioner tool, but most rear wheel drive vehicles tensioner can be released w/a ratchet.

here you go. please rate, thanks

Item Part Number Description 1 8620 Drive Belt 2 10300 Generator Pulley 3 6C348 Idler Pulley 4 6B209 Drive Belt Tensioner 5 3D673 Power Steering Pump Pulley 6 2E884 A/C Clutch Pulley 7 6A312 Crankshaft Vibration Damper Pulley 8 8A528 Water Pump Pulley
CAUTION: The drive belt tensioner has no provision for adjustment and will be damaged if forced to travel beyond its operating range. Automatic tensioners are calibrated at the factory to provide the correct amount of tension to the belt. There is no need to check tensioners for proper tension.
NOTE: Drive belts (8620) with automatic drive belt tensioner (6B209) do not require adjustment.
NOTE: When a drive belt is installed new or reinstalled after a service procedure, the drive belt does not fully seat into pulley grooves until engine has run for several minutes.
This vehicle is equipped with:

• a V-ribbed serpentine accessory drive belt.
• automatic drive belt tensioners.

New drive belts should be of the same type as originally installed.
Drive belt chirp is a regularly occurring chirping noise that occurs due to:

• pulley misalignment.
• excessive pulley runout.

It can be a result of a damaged pulley or an incorrectly replaced pulley that was not correctly aligned.
To correct drive belt chirp:

• determine the area where the noise comes from.
• check each of the pulleys in that area with a straightedge to the crankshaft pulley (6312) for front accessory drive and the water pump drive pulley to the water pump.
• look for the accessory pulley to be out of position in the fore/aft direction or at an angle to the straightedge.

Drive belt squeal is an intermittent noise that occurs when the drive belt slips on a pulley during certain conditions such as:

• engine start-up.
• rapid engine acceleration.
• A/C clutch engagement.

Drive belt squeal can occur under the following conditions:

• The A/C discharge pressure goes above specifications:
  • The A/C system is overcharged.
  • The A/C condenser airflow is blocked.