Lubrication & Maintenance/500 Hour/12 Month
RG19661,00003E6 -19-13FEB13-2/2
Checking Tensioner Spring Tension
A belt tension gauge will not give an accurate measure of
the belt tension when automatic spring tensioner is used.
Measure tensioner spring tension using a torque wrench
and procedure outlined below:
1. Release tension on belt using a long handled 1/2 inch
drive tool in square hole in tensioner arm. (Earlier
tensioner arms have bolt in place of square hole, and
require breaker bar with socket.) Remove belt from
pulleys.
NOTE: While belt is removed, inspect pulleys and
bearings. Rotate and feel for hard turning or
any unusual sounds. If pulleys or bearings need
replacement, see your John Deere dealer.
2. Release tension on tension arm and remove drive tool.
3. Put a mark (A) on swing arm of tensioner as shown.
4. Measure 21 mm (0.83 in.) from (A) and put a mark (B)
on tensioner mounting base.
5.
Install torque wrench (C) so that it is aligned with
centers of pulley and tensioner. Rotate the swing
arm using a torque wrench until marks (A and B) are
aligned.
6. Record torque wrench measurement and compare
with specification below. Replace tensioner assembly
as required.
Specification
Spring Tension—Torque....................................... 18-22 N·m (13-16 lb-ft)
NOTE: Threads on belt tensioner roller cap screw
are LEFT-HAND threads
A—Mark On Swing Arm
B—Mark On Tensioner
Mounting Base
C—Torque Wrench
RG13745
—UN—1
1NOV04
Marks on Tensioner
RG12065
—UN—28JAN02
Align Torque Wrench With Pulley and Tensioner
RG13746
—UN—1
1NOV04
Align Marks
OM-C3 | 12/6 | 42
Summary of Contents for M65C13
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