jcb JS300 Service Manual page 854

Fig 28.
6 Install the collar and then the bolt and nuts.
Fig 29.
Fig 30.
E-193
Note: When checking or refitting JS machine pivot pins,
the retaining nuts and bolts should not be fastened up tight
to the pivot boss but must have approximately 3mm of play
so that the pin is free from tension.
7 Connect the grease tube.
Note: Stroke the ram and release entrapped air. After
releasing the air, check for oil leakage.
803212-1
803214-1
A409820-C2
9813/5100-1
Section E - Hydraulics
Hydraulic Rams
Removal and Replacement
E-193