LOAD SENSING PROPORTIONING VALVE (LSPV) INSPECTION


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1.  Place the vehicle on level ground.

2.  Check the tire inflations and set them to the recommended pressure if necessary.

•  If not as specified, replace or adjust.

3.  Check the vehicle with a person in the driver’s seat; include the standard vehicle tools, the spare wheel and tire, and a full tank of fuel.

4.  Install the SST to the front wheel cylinder and rear wheel cylinder, then bleed the air in the brake line and LSPV using a air bleed valve A.

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5.  Inspect the fluid pressure of rear wheel cylinder while the fluid pressure of front wheel cylinder is 4,900 kPa {50 kgf/cm2, 711 psi} and 9,800 kPa {100 kgf/cm2, 1,421 psi}.

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•  If not as specified, adjust the LSPV.

Load sensing proportioning valve (LSPV) fluid pressure

Type

Front wheel cylinder fluid pressure

(kPa {kgf/cm2, psi})

Rear wheel cylinder

(kPa {kgf/cm2, psi})

4x2 (except high clearance model)
Without ABS
4,900 {50, 711}
2,250—2,850 {23—29, 327—413}
9,800 {100, 1,421}
3,130—3,930 {32—40, 454—569}
With ABS
4,900 {50, 711}
2,910—3,710 {30—37, 423—538}
9,800 {100, 1,421}
4,970—6,170 {51—62, 721—894}
4x2 (high clearance model), 4x4
Without ABS
4,900 {50, 711}
2,250—2,850 {23—29, 327—413}
9,800 {100, 1,421}
3,130—3,930 {32—40, 454—569}
With ABS
4,900 {50, 711}
2,650—3,450 {28—35, 385—500}
9,800 {100, 1,421}
4,700—5,900 {48—60, 682—855}

Note
•  When applying the specified pressure, the brake pedal must not be “double pumped” or released.
•  Read the rear pressure. After approx. 2 s elapse from setting the front wheel cylinder fluid pressure.