jcb JS300 Service Manual page 933

Fig 25.
5 Next, place the dial gauge on the rear of the vehicle
and repeat the two above procedures to obtain L2
and L4.
Fig 26.
6 The average lateral movement is shown as the result
of the equation
L1+L2+L3+L4
2
New Machine
1.2 mm (0.05 in)
E-272
Limit of Use
3.6 mm (0.15 in)
9813/5100-1
Section E - Hydraulics
Hydraulic System Fault Finding
Test 017: Testing Swing Bearing
Note: Always stop the engine when installing or removing
the dial gauge or reading the dial gauge.
E-272