MAINTENANCE
157
MUX20JP021602
BoomLiftModels X20JPLUS
12.8.2.Tensioningrubbertrack
12.8.3.Removingrubbertrack
Stopthemachineonaflatandsolidground.Raisethemachineoffthegroundsa‐
felyand,ifneeded,supportitbyapplyingstableblocksorjackstandsunderthe
undercarriageframe.
Thegreasecontainedinthehydraulictracksisunderpressure. Ifthe
va
lvetracktensionistoo loose,itcouldbeexpelledundertheeffect
ofthepressureofgrease,seriouslyendangeringthesafetyoftheope‐
rator.
Whengravelormudisstuckbetweenthesprocketteethandtracklinks,re‐
moveitbeforetighteningthetracks.
Totightenthetracks,connectagre
ase
guntogreasefitting2 and addgrease
untilthetracktensionreachestheindi‐
catedvalues(preferablyuseapneuma‐
tic pump with 100 bar operating
pressure).Beforestartthemachinecle‐
anupanygreasespillage.Forthechoi‐
ce of the type of grease to use, see
ʺTable of recommend
ed lbrificants
(p. 139)ʺ.
Fig.160 Tensioningvalve