Check Fan Belt Tensioner

LV12526-UN-13APR05

LV12528-UN-12APR05

A - Mark on Swing Arm

B - Mark on Tensioner Mounting Base

C - Torque Wrench

SERVICE INTERVAL
	Every 1200 Hour

NOTE: A belt tension gauge does not provide an accurate measurement of the belt tension. Measure tensioner spring tension using a torque wrench.

1. Place machine in park and shutoff engine. Remove key.

2. Remove fan belt.

3. Put a mark (A) on the swing arm of the tensioner as shown.

4. Measure 21 mm (0.83 in) from (A) and put a mark (B) on tensioner mounting base.

5. Rotate the swing arm using a torque wrench until marks (A and B) are aligned.

   Pull tensioner with torque wrench away from engine.

6. Record torque wrench measurement and compare with specification. If recorded measurement is below specifications, have your John Deere dealer replace tensioner assembly.

   Item	Measurement	Specification
   Belt Tensioner	Torque	18—22 N·m (159—195 lb·in)

7. Install fan belt. See “Replace Fan Belt” in this section.