Replace the cooling fan belt tensioner
WARNING
EXPLOSION HAZARD!
Batteries can emit explosive gases.
To reduce the possibility of personal injury, always ventilate the
compartment before servicing the batteries. To reduce the possibil‐
ity of arcing, remove the negative (-) battery cable first and attach
the negative (-) battery cable last.
Remove
1 Disconnect the battery cables. Refer to the original equipment
manufacturer (OEM) service manual.
2 Remove the drive belt, see Chapter
1.7 Cooling system
, para‐
graph
Replace the cooling fan drive belt
.
3 Remove the capscrew and belt tensioner from the bracket.
NOTE
Most belt tensioners are mounted to the water inlet connection.
Some belt tensioners are mounted to a separate mounting bracket
and use internal fasteners for clearance.
Examine for reuse
1 Measure the clearance between the tensioner spring case
and the tensioner arm to verify tensioner wear-out and
uneven bearing wear. If the clearance at measurement point
(X) is more than 3 mm (0.12 in) at any point, the tensioner is
damaged and must be replaced as a complete assembly.
NOTE
Always replace the belt when a tensioner is replaced. However, it is
not always necessary to replace a tensioner when a belt is replaced.
A. Tensioner cap
B. Tensioner arm
C. Spring case
D. Tensiner pulley
32 1 Engine – 1.7 Cooling system
TL2 Maintenance Manual
591 003 Default
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