Inspecting Fan and Alternator Belt Tensioners

SERVICE INTERVAL - 1500 HOURS

 

NOTE: Belts are equipped with an automatic tensioner which does not require adjustment.

Release tension on belts using a 1/2 in. (upper) and 3/4 in. (lower) breaker bar.

Remove single belt from alternator pulley. Remove second belt from crankshaft pulley.

Upper tensioner-measure 21 mm (13/16 in.) from mark (A) and put a mark (B) on mounting bracket.

Lower tensioner-measure 25 mm (1 in.) from (D) and put a mark (C) on mounting bracket.

Rotate tension arm with torque wrench until marks are aligned.

Tensioner - Specification

Upper -Tension 20 N·m (15 lb-ft)
Lower -Tension 90 N·m (65 lb-ft)

If measurement is not to specification, see your John Deere Dealer.

RW41262A

Upper Tensioner

RW41263A

Lower Tensioner

RW26195

Belt Routing

AG,RF30435,2181 -19-30AUG00-1/1