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Mazda 121 (3) (1996-2003) Mazda BT-50 (1) (2006-2011)

Removal the timing belt (Mazda 121 (3))

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  • Mazda
  • 121 JASM (1996-2003)
  • Power unit
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  • Removal the timing belt
0
There are two toothed belts on a diesel engine. Before removing the fuel injection pump toothed belt, you need to remove the camshaft toothed belt.

Since the right engine mount needs to be released, a lift or hydraulic jack is needed to suspend the engine.

When removing, you need to pay attention to the following:
  • Install the timing belt only on a cold engine. The engine should not run for at least 4 hours. Adjusting the belt tension when the engine is hot will result in too low tension, which will reduce the service life of the belt.
  • To remove and install both timing belts, you need three special adjustment rods, which you can make yourself.
  • Both timing belts must be replaced as part of maintenance every 60 thousand km.
  • Both timing belts should always be replaced after removal. A used belt should not be tightened. This will overload the belt and bearings.
  • If oil or coolant gets on the timing belt, the belt must be replaced. The operation of a damaged timing belt can lead to serious malfunctions.
  • When the camshaft drive toothed belt is removed, the engine must not be turned over, otherwise the pistons may hit the valves.

Disconnect the negative cable from the battery with the ignition off.

Note: This will erase data from electronic memory blocks, such as radio codes (see chapter "Electrical equipment").


Remove the poly V-belt.

Attach a hoist chain to the right side of the engine or place a jack with a wooden block under the engine.

Raise the engine so that the right engine mount is unloaded.



Unscrew the bolts and remove the right engine support reinforcement holder.


Unscrew the bolts and remove the right engine support reinforcement holder.

Remove the right engine mount.


Remove the right engine mount.

Unhook the clamps or unscrew the bolts and remove the timing belt covers.


Unhook the clamps or unscrew the bolts and remove the timing belt covers.
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This text was checked by: Evgeny Mereshnikov
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Mazda 121 (3) » Diesel engine
Next

Toothed Belt Drive — Design Description
Setting the engine to the TDC position of the first cylinder
Installing a timing belt
Removal the cylinder head
Installing the cylinder head
Removal and installation a vacuum pump
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Mazda BT-50 (1) (2006-2011) 
  • General information
  • Introduction to guide
  • User manual
  • Maintenance
  • Power unit
  • Engine repair (diesel)
  • Cooling and lubrication system
  • Fuel injection system
  • Intake and exhaust system
  • Engine electrical equipment
  • Transmission
  • Clutch
  • Mechanical gearbox
  • All-wheel drive system
  • Transfer case and gearboxes
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Heating and air conditioning
  • Security system SRS
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
Mazda 121 (3) (1996-2003) 
  • General information
  • User manual
  • Maintenance
  • Power unit
  • Petrol engine 1.3 l
  • Petrol engine 1.25/1.4 l
  • Diesel engine
  • Lubrication system
  • Cooling system
  • Ignition system
  • Supply system
  • Fuel injection (gasoline)
  • Fuel injection (diesel)
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Wheels and tires
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors, windows and locks
  • Heating system
  • Electrical equipment
  • Troubleshooting
  • Equipment and devices
  • Lighting system
  • Power devices
  • Electrical circuits
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