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MUX20JP021602
12.8.2.Tensioning rubber track
The grease contained in the hydraulic tracks is under pressure. If the
valve track tension is too loose, it could be expelled under the effect
of the pressure of grease, seriously endangering the safety of the ope‐
rator.
When gravel or mud is stuck between the sprocket teeth and track links, re‐
move it before tightening the tracks.
Fig. 160 Tensioning valve
12.8.3.Removing rubber track
Stop the machine on a flat and solid ground. Raise the machine off the ground sa‐
fely and, if needed, support it by applying stable blocks or jack stands under the
undercarriage frame.
To tighten the tracks, connect a grease
gun to grease fitting 2 and add grease
until the track tension reaches the indi‐
cated values (preferably use a pneuma‐
tic pump with 100 bar operating
pressure). Before start the machine cle‐
an up any grease spillage. For the choi‐
ce of the type of grease to use, see
ʺTable of recommended lbrificants
(p. 139)ʺ.
Boom Lift Models X20JPLUS
MAINTENANCE
157
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