What is the importance of the load sensing proportioning and bypass valve (LSP & BV) in trucks on Toyota T100?

The center of gravity on a truck is higher than a car, causing the weight to be biased towards the front when the brakes are applied. This results in the front brakes requiring more hydraulic pressure and the rear brakes requiring less to prevent locking. Trucks are equipped with a Brake Proportioning Valve and bypass valve (LSP & BV) that adjusts the braking bias based on the weight of the load. It is important to cover painted surfaces and avoid spilling brake fluid during maintenance. Servicing the LSP & BV at home is not recommended due to the specialized gauge set required, but it can be replaced by the vehicle owner. However, adjusting the unit should be done by a dealer service department or qualified repair shop. Removal and installation instructions vary depending on the model of the vehicle. After installation, it is necessary to bleed the brake hydraulic system and have the LSP & BV adjusted by a professional.

Genuine Toyota T100 Brake Proportioning Valve

Proportioning Valve

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4 Brake Proportioning Valves found

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Toyota T100 Valve Assy, Load Sensing Proportioning
Part Number: 47910-34040
$236.88 MSRP: $339.67
You Save: $102.79 (31%)
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Product Specifications
- Replaced by: 47910-34050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1993-1998 Toyota T100 | DLX, SR5, STD | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; 3RZFE, 5VZFE; RCK10L-TRMRKA, RCK10L-TRSRKA, VCK11L-CRMDKA, VCK11L-CRMDKK, VCK11L-CRMSKA, VCK11L-CRSDKA, VCK11L-CRSDKK, VCK11L-CRSSKA, VCK11L-THMDKA, VCK11L-THSDKA, VCK11L-TRMDKA, VCK11L-TRMDKK, VCK11L-TRMRKA, VCK11L-TRMSKA, VCK11L-TRSDKA, VCK11L-TRSDKK, VCK11L-TRSSKA, VCK21L-CRMDKA, VCK21L-CRMDKK, VCK21L-CRMSKA, VCK21L-CRMSKK, VCK21L-CRSDKA, VCK21L-CRSDKK, VCK21L-CRSSKA, VCK21L-CRSSKK, VCK21L-TRMDKA, VCK21L-TRMDKK, VCK21L-TRMSKA, VCK21L-TRMSKK, VCK21L-TRSDKA, VCK21L-TRSDKK, VCK21L-TRSSKA, VCK21L-TRSSKK
View related parts
Toyota T100 Valve Assy, Load Sensing Proportioning
Part Number: 47910-34050
$236.88 MSRP: $339.67
You Save: $102.79 (31%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Pressure Metering Valve
- Manufacturer Note: W(ABS)
- Replaces: 47910-34040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1993-1998 Toyota T100 | DLX, SR5, STD | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; 3RZFE, 5VZFE; RCK10L-TRMRKA, RCK10L-TRSRKA, VCK11L-CRMDKA, VCK11L-CRMDKK, VCK11L-CRMSKA, VCK11L-CRSDKA, VCK11L-CRSDKK, VCK11L-CRSSKA, VCK11L-THMDKA, VCK11L-THSDKA, VCK11L-TRMDKA, VCK11L-TRMDKK, VCK11L-TRMRKA, VCK11L-TRMSKA, VCK11L-TRSDKA, VCK11L-TRSDKK, VCK11L-TRSSKA, VCK21L-CRMDKA, VCK21L-CRMDKK, VCK21L-CRMSKA, VCK21L-CRMSKK, VCK21L-CRSDKA, VCK21L-CRSDKK, VCK21L-CRSSKA, VCK21L-CRSSKK, VCK21L-TRMDKA, VCK21L-TRMDKK, VCK21L-TRMSKA, VCK21L-TRMSKK, VCK21L-TRSDKA, VCK21L-TRSDKK, VCK21L-TRSSKA, VCK21L-TRSSKK
View related parts
Toyota T100 Valve Assy, Load Sensing Proportioning
Part Number: 47910-34010
Product Specifications
- Replaced by: 47910-34020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1993-1995 Toyota T100 | STD | 6 Cyl 3.0L | 3VZE; 3VZE; VCK10L-THMREA, VCK10L-THSREA, VCK10L-TRMREA, VCK10L-TRMREK, VCK10L-TRSREA, VCK10L-TRSREK
View related parts
Toyota T100 Valve Assy, Load Sensing Proportioning
Part Number: 47910-34020
Product Specifications
- Other Name: Pressure Metering Valve
- Manufacturer Note: W(ABS)
- Replaces: 47910-34010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1993-1995 Toyota T100 | SR5, STD | 6 Cyl 3.0L | 3VZE; 3VZE; VCK10L-THMREA, VCK10L-THSREA, VCK10L-TRMREA, VCK10L-TRMREK, VCK10L-TRMSEA, VCK10L-TRMSEK, VCK10L-TRSREA, VCK10L-TRSREK, VCK10L-TRSSEA, VCK10L-TRSSEK, VCK20L-TRMREA, VCK20L-TRMREK, VCK20L-TRMSEA, VCK20L-TRMSEK, VCK20L-TRSREA, VCK20L-TRSREK, VCK20L-TRSSEA, VCK20L-TRSSEK

Toyota T100 Brake Proportioning Valve

In Toyota T100 vehicles, the Brake Proportioning Valve is one of its key components which helps in controlling, fluid pressure so as to provide good braking. The main use is to control the limiting of the braking force of the front disc brakes and rear drum brakes so that the rear brakes cannot lock before the front brakes during an emergency stop. This is done by modifying the quantity of brake fluid pressure that is supplied to the rear brakes, in order to better control of the vehicle, especially during an emergency brake. Most often used in vehicles with a combination of disc and drum brakes, the Brake Proportioning Valve changes the output force in proportion to the cross-sectional area of a brake line. Thereafter, although the kind or kind of brake proportioning valves used in different T100 models may not be named, the concept of brake proportioning valves remains constant of all applications major as controlling balance braking.

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Toyota T100 Brake Proportioning Valve Parts Questions & Experts Answers

Valve Assy, Load Sensing Proportioning
47910-34040
Q: What is the importance of the load sensing proportioning and bypass valve (LSP & BV) in trucks on Toyota T100?
A: The center of gravity on a truck is higher than a car, causing the weight to be biased towards the front when the brakes are applied. This results in the front brakes requiring more hydraulic pressure and the rear brakes requiring less to prevent locking. Trucks are equipped with a Brake Proportioning Valve and bypass valve (LSP & BV) that adjusts the braking bias based on the weight of the load. It is important to cover painted surfaces and avoid spilling brake fluid during maintenance. Servicing the LSP & BV at home is not recommended due to the specialized gauge set required, but it can be replaced by the vehicle owner. However, adjusting the unit should be done by a dealer service department or qualified repair shop. Removal and installation instructions vary depending on the model of the vehicle. After installation, it is necessary to bleed the brake hydraulic system and have the LSP & BV adjusted by a professional.