Doosan — Replace Fan/Alternator Poly-V Belt
Maintenance · Fan/alternator belt drive
From a Doosan owner's manual covering: G 100, G100-SIIIA, G100SIIIA, G150, G150-SIIIA, G200-SIIIA, G60, G60-SIIIA, G60SIIIA, G80, G80-SIIIA, G80SIIIA. Check it applies to your exact model before use.
Applies to: Doosan G100-SIIIA, Doosan G150-SIIIA, Doosan G200-SIIIA, Doosan G60-SIIIA, Doosan G80-SIIIA, John Deere 4045HFG81 engine, John Deere 4045HFG82 engine, John Deere 6068HFG82 engine
Procedure
- Inspect belts for cracks, fraying or stretched areas; replace if necessary.
- Release belt tension (automatic tensioner: breaker bar on tension arm; manual: loosen alternator cap screws).
- Remove poly-V belt from pulleys and discard.
- Install new belt, ensuring it is correctly seated in all pulley grooves.
- Apply tension to belt per Check Belt section.
- Start engine and check belt alignment.
Tools required
- Breaker bar and socket Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Doosan G100-SIIIA →, Doosan G150-SIIIA →, Doosan G200-SIIIA →, Doosan G60-SIIIA →, Doosan G80-SIIIA →, John Deere 4045HFG81 engine →, John Deere 6068HFG82 engine →
Source: Doosan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.