Operation and maintenance manual

Section 220-0100
7
SM 1392 Rev 3 10-03
Steering System - Flow Amplifier Valve
SM - 533
Fig. 6 - Exploded View Of Flow Amplifier Valve
1 - System Relief Valve
2 - Counter Pressure & Anti-cavitation Valve
3 - Orifice
4 - Orifice
5 - Shock & Anti-cavitation Valve
6 - Directional Spool
7 - Priority Spool
8 - Amplifier Spool
9 - Check Valve
28 - Spring
29 - Spring
30 - Spring Guide
31 - Plug
32 - 'O' Ring Seal
33 - 'O' Ring Seal
34 - Plug
35 - 'O' Ring
36 - Housing
10 - Orifice
11 - Throttle Check Valve
12 - Orifice
13 - Cover
14 - Cover
15 - Screw
16 - Lockwasher
17 - Screw
18 - Lockwasher
19 - 'O' Ring
20 - 'O' Ring
21 - Plate
22 - Plate
23 - Spring Stop
24 - Spring
25 - 'O' Ring
26 - Spring
27 - Spring Stop
1. Install orifice (12) in cover (14) face of housing (36) and
tighten to a torque of 5 ± 1 Nm (45 ± 10 lbf in).
2. Install throttle check valve (11) in 'PP' port of
housing (36) and tighten to a torque of 10 ± 3 Nm
(90 ± 25 lbf in).
3. Install orifice (4) in 'LS' port of housing (36) and
tighten to a torque of 10 ± 3 Nm (90 ± 25 lbf in).
4. Install shock & anti-cavitation valves (5) in port 'D'
of housing (36). Secure shock & anti-cavitation
valves (5) by hand.
5. If removed, install orifice (10) in each end of
directional spool (6) and tighten to a torque of 5 ± 1 Nm
(45 ± 10 lbf in).
6. Install directional spool (6), priority spool (7) and
amplifier spool (8) assemblies, in their respective
ports of housing (36).
7. Install spring (26) on amplifier spool (8) at cover
(14) end of housing (36).
8. Install spring guide (30), springs (28 & 29) and
spring stop (27), in that order, on directional spool
(6), at cover (14) end of housing (36).
9. Install new 'O' rings (19, 20 & 25) on plate (22) and