Replacing the drive belt of the K / V compressor of the M73 engine is carried out in the same way as replacing the compressor drive belt of the K / V of the M60 engine (see Section Removing and installing accessory drive belts). Below is just the procedure for replacing the alternator drive belt.
If you intend to continue using a removable belt, note the direction of its movement.
1. Remember the pattern of laying the belt on the pulleys.
2. Remove the cooling fan drive clutch together with the impeller (see Section Removal and installation of the fan drive clutch Chapters Engine cooling, heating, ventilation and air conditioning systems).
3. Disconnect from the engine, over the generator, a hose of system of cooling.
4. Giving nuts (№№ 1-4), loosen the belt tension and remove it.
5. Check the condition of the belt (see chapter Vehicle settings and routine maintenance) and replace if necessary.
6. Lay the drive belt over the pulleys and rollers and make sure it is in the correct position.
When installing a belt that has already been used, observe the previous direction of its movement.
7. Move the belt tensioner adjusting plate by the hex (5) until it stops and tighten nuts 3 and 4 first, and then nuts 1 and 2.