jcb JS300 Service Manual page 808

Fig 38.
21 Install reverse protection valve sub-assembly 52 onto
valve housing 303 and secure with socket head
screws 171 tightened to a torque of 29 Nm (21 lbf ft).
Relief Valves
Dismantling
Refer to the sectional drawing as a guide to dismantling
and assembling.
Take steps during dismantling to ensure that all the parts
are returned to their original positions.
Clean the parts with a suitable solvent and blow them dry.
Replace all used 'O'-rings
1 If not already done, remove cap 37 (with a 14 mm A/
F hexagonal socket) from the relief assemblies 34
and remove piston 38, liner 51, shim 40, poppet 43
and spring 42.
E-147
43
2 The seat 44 is press-fitted into sleeve 39. Remove it
using a soft object, taking care not to scratch the seat
face.
44
9813/5100-1
Section E - Hydraulics
Swing Motor
Dismantling and Assembly
34
40
42
51
37
Fig 39.
39
JS06240-C1
Fig 40.
38
JS06230-C1
E-147