Operation and maintenance manual

Section 220-0100
1
SM 1392 Rev 3 10-03
STEERING SYSTEM - Flow Amplifier Valve
The flow amplifier valve amplifies the oil flow from the
steering valve to the steering cylinders by eight. It is
mounted at the rear of the cab and consists of the
following:
Counter pressure & anti-cavitation valve (2)
DESCRIPTION
Numbers in parentheses refer to Figs. 1 & 6. Letters
in parentheses refer to Figs. 1 & 2.
The Flow Amplifier Valve can be identified as item 5 in
Section 220-0000, STEERING SYSTEM SCHEMATIC.
SM - 528
1 - System Relief Valve
2 - Counter Pressure & Anti-cavitation Valve
3 - Orifice
4 - Orifice
5 - Shock & Anti-cavitation Valve
L - Steering Valve Left Turn Oil
R - Steering Valve Right Turn Oil
LS - Load Sensing Pressure
EF - Excess Flow
HP - Pump Supply
PP - Pilot Pressure
HT - Return To Tank
CL - Left Turn Cylinder Oil Supply
CR - Right Turn Cylinder Oil Supply
11 - Throttle Check Valve
12 - Orifice
13 - Cover
14 - Cover
6 - Directional Spool
7 - Priority Spool
8 - Amplifier Spool
9 - Check Valve
10 - Orifice
Fig. 1 - Sectional View of Flow Amplifier Valve