Suzuki SY413 Service Manual page 1706

5-12 BRAKES
LSPV (Load Sensing Proportioning Valve) ASSEMBLY
As shown below, LSPV is included within the brake circuit which connects the master cylinder and the rear wheel
brake. It controls the hydraulic pressure applied to the rear wheel brake according to the loaded state of the vehicle
(or weight of the load), whereby preventing the rear wheels from getting locked prematurely.
Also, LSPV has a sensor and such a structure as to control hydraulic pressure through its two systems (right &
left rear brakes).
CAUTION:
Never disassemble LSPV. Disassembly will spoil its original function. If faulty condition is found, re-
place it with new one.
CONSTRUCTION
The LSPV components are grouped into two sections as follows.
"A": Sensor section
The main parts in this section are a lever and a spring which senses variation of the vehicle's height as affected
by the loaded condition and converts it into the load.
"B": Hydraulic pressure control section
Included in this section are a plunger and valve mechanism to execute proportional control.
1. Blank
2. Equalizer
3. From master cylinder
4. To rear wheel brake
5. Plunger
6. Valve
7. LSPV lever
8. Sensor spring
9. Collar
"A": Sensor section
"B": Hydraulic pressure control section
1. LSPV
2. LSPV lever
3. Spring
4. Control rod with LSPV stay
5. From master cylinder
6. To rear wheel cylinder or caliper (right side)
7. To rear wheel cylinder or caliper (left side)