Doosan — Check Belt Tensioner Spring Tension
Adjustments · Automatic belt tensioner
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
- Release belt tension using long-handled 1/2 inch drive tool; remove belt from pulleys.
- Release tension on tensioner arm and remove drive tool.
- Put a mark on the swing arm of the tensioner.
- Measure 21 mm (0.83 in.) from the mark and put a second mark on the tensioner mounting base.
- Install torque wrench in square hole aligned with roller and tensioner centre.
- Rotate swing arm with torque wrench until marks are aligned.
- Record torque measurement and compare with specification.
- Replace tensioner assembly as required.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spring force 18-22 Amazon eBay FridayParts $45.30 N·m (13-16 Amazon eBay FridayParts $22.99 lb.-ft.)
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.