John Deere 4045 / 6068 — Checking Tensioner Spring Tension (Automatic Tensioner)
Maintenance · Automatic belt tensioner
For the John Deere 4045 / 6068, from the John Deere owner's manual.
Applies to: John Deere 4045, John Deere 6068
Procedure
- Release tension on belt using a 1/2 in. drive breaker bar on tension arm; remove belt from pulleys.
- Release tension on tension arm and remove breaker bar.
- Put a mark on swing arm of tensioner.
- Measure 21 mm (0.83 in.) from mark and put a second mark on tensioner mounting base.
- Install torque wrench aligned with centers of pulley and tensioner; rotate swing arm until marks align.
- 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 Tension Torque - 18-22 Amazon eBay FridayParts $45.30 N.m (13-16 Amazon eBay FridayParts $22.99 lb-ft)
Full service-parts list: John Deere 4045 →, John Deere 6068 →
Source: John Deere 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.