Routine Maintenance
Engine
139 139
9811/5700-7
Changing the Drive Belt
1 Get access to the drive belt. Refer to Front End
Accessory Drive Belt, Introduction.
2 Use a 16mm (5/8 in.) socket located on the hexagon
spigot nut D, carefully rotate the tensioner against the
spring force in direction E. Do not use excessive force
or the tensioner will be damaged.
3 Keep holding the tensioner against the spring force
and lift the belt off the tensioner pulley F.
4 Slowly release the spring force by rotating the
tensioner unit in the opposite direction.
5 Before fitting a new belt, check that the tensioner
roller and fan pulley rotate smoothly and that there is
no play in the bearings.
6 Fit the new drive belt around the pulleys.
K
Fig 102. ( T 138).
7 Use a 16mm (5/8 in.) socket located on the hexagon
spigot nut D, carefully rotate the tensioner against the
spring force in direction E. Do not use excessive force
or the tensioner will be damaged.
8 Keep holding the tensioner against the spring force
and lift the belt around the tensioner pulley F.
To Next Page
Loading...
