Steel - jcb JS300 Service Manual

Steel

Check (Operation)
WARNING Recoil unit servicing must only be carried out by JCB dealers. You could be killed or injured if
you tamper with it.
NOTICE Always make sure that the track tension measurement is not less than specified or severe strain
to the track will result.
Check/Adjust the Track Tension
1. Stop the machine on solid, level ground.
2. Move the machine backwards and forwards several times, then move the machine forwards and stop it
on level ground.
3. Stop the engine.
4. Check the track tension.
A Track tension - measurement
4.1. Place a long, stiff and straight piece of steel or wood on top of the tracks touching above the front
idler and the top roller.
5. Make sure the track tension is within the specified limits.
Refer to: Technical Data > Tracks (Page 276).
6. If necessary, adjust the track tension.
6.1. To adjust the track tension, inject or release grease from the check valve.
6.2. Inject grease to increase the tension.
6.3. Release grease to decrease the tension.
6.4. When you open the check valve, always stand to one side and loosen it a slowly until the grease
starts to release.
6.5. Do not loosen the check valve too much, grease can spurt out or the cover of the check valve can
come off and cause serious injury.
7. Never attempt to disassemble the check valve or try to remove the grease point from the check valve.
8. If there is a clearance between the idler wheel shaft and the track frame, use pressure to apply the grease.
9. If there is no clearance after the application of grease, then contact your JCB dealer for any service
requirements.
218
Figure 233.
A
9831/1100-2
Maintenance
Tracks
218