jcb JS 200 Series Service Manual Download

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33 - 4

Section E

Hydraulics

9803/6400

Section E

33 - 4

Issue 2*

Control Valve JS200/JS240

Assembly, 5-spool control valve section

(continued)

13.

Install the main relief valve 13 (Hexagonal 31.5 A/F) to the valve housing, with a torque of 78-88 Nm (57.84-65.07 lb/ft).

14.

Install the port relief valve 31 (Hexagonal 31.5 A/F) to the valve housing, with a torque of 78-88 Nm (57.84-65.07 lb/ft).

15.

Install the negative control relief valve 24 (Hexagonal 36 A/F) to the valve housing, with a torque of 88-98 Nm

(65.07-72.3 lb/ft).

16.

Screw in the plug 53 (Hexagonal 36 A/F) with the 'O'-ring 54 fitted, with a torque of 83-93 Nm (61.45-68.68 lb/ft).

17.

Assemble the poppet 25, spring 26 to the sleeve 3 and assemble in the valve housing.

18.

Install the check valve assembly 32 (Hexagonal 36 A/F), with a torque of 265-275 Nm (195.21-202.44 lb/ft).

19.

Assemble the poppet 27 and spring 22 into the valve housing and install the 'O'-ring 29 to the plug 30 (Hexagonal 27 A/F).

Screw in, with a torque of 83-93 Nm (61.45-68.68 lb/ft).

20.

Assemble the poppet 46 and spring 45 to the valve housing. Install the 'O'-ring 44 to the plug 43 (Hexagonal 27 A/F) and

screw in.
If the plug 12 (Hexagonal 22 A/F) is disassembled, install the 'O'-ring 11 and tighten, with a torque of 49-59 Nm
(36.15-43.38 lb/ft).

21.

If the plug 53 (Hexagonal 36 A/F) is disassembled, install the 'O'-ring 54 and tighten, with a torque of 83-93 Nm
(61.45-68.68 lb/ft).

22.

If the plug 52 (Hexagonal socket 5 A/F) is disassembled, wrap seal tape around the plug periphery (leave one thread open

from the end and wrap to the right 1.5~2 times so that the tape bites into the threads). Tighten, with a torque of 6.85-8.82
Nm (5.06-6.5 lb/ft).

23.

Check for any disassembled parts not reassembled and then tighten.

The above tightening torque values are for the threads lubricated with hydraulic oil.

24.

Install ‘O’-ring 38 in the valve housing and fit plate 41. Secure with bolt 40 (Hexagonal 14 A/F) and washer 38 tightened to

a torque of 39-44 Nm (28.92-32.53 lb/ft).

. If the plugs are disassembled, assemble as follows.

Plug (Hexagonal A/F) No.

'O'-ring No.

Tightening Torque Nm

12 (22)................................................13..........................

49~59 Nm (36.15-43.38 lb/ft)

34 (Hexagonal socket 6 A/F)..............33..........................

34~39 Nm (25.3-28.92 lb/ft)

67 (19)................................................33..........................

34~39 Nm (25.3-28.92 lb/ft)

78 (Hexagonal socket 10 A/F) ...........77..........................

88~98 Nm (65.07-72. lb/ft)

37 (31.5) Assembly replacement.......................................

78~88 Nm (57.84-65 lb/ft)

26.

When assembling the plug 35 (Hexagonal socket 5 A/F), wrap seal tape around the plug periphery (leave open one thread

from the end and wrap 1.5~2 times to the right so that the seal tape bites into the thread), torque the plug with a force
of 6.85-8.82 Nm (5.06-6.5 lb/ft).

jcb JS 200 Series, Service Manual

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