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.


A-Upper Tensioner Mark
B-Upper Bracket Mark
C-Lower Bracket Mark
D-Lower Tensioner Mark

RW41262A

Upper Tensioner

RW41263A

Lower Tensioner

RXA0053307

9120

RXA0053308

9220-9320-9420-9520-Early Version

RXA0065615

9220-9320-9420-9520-Late Version

RW29387,0000184 -19-23OCT02-1/1