Load Compensator: Testing and Inspection

Load Sensing Valve

Adjusting Length "L" Of Load Sensing Valve:

INSPECTION
1. Check length "L" in unladen condition. Unladen is fuel, radiator coolant and engine oil full. Ensure that the spare tire, jack, hand tools and mats are in their designated positions.
a. Have a driver sit in the drivers seat and one person sit on the rear of vehicle. Then have the person in the rear slowly get off the vehicle. This is necessary to stabilize suspension deflection.
b. Measure length "L". Length "L" should be approximately 189 mm (7.44 inches)
2. If adjustment is necessary, loosen stopper bolt locknut, pull lever against stopper bolt and adjust by turning stopper bolt. Ensure length of "L" meets specifications.
3. Connect the brake fluid pressure gauge to air bleeders of front and rear brake.
4. Bleed air from the brake fluid pressure gauge.

Checking Rear Brake Pressure:

5. Depress pedal slowly when raising brake pressure. With one person aboard and no weight in the rear, depress brake pedal until front brake fluid pressure reaches 5,884 kPa (853 psi). Hold brake pedal in that position and read rear brake fluid pressure on pressure gauge indicator. Rear brake pressure should be 2,942 - 3,727 kPa (427 - 540 psi)

Setting Weight Over Axle Center:

6. Slowly place a heavy weight over the center of the rear axle so that the sensor spring becomes the same as when in the loaded position. Depress the brake pedal until front brake fluid pressure reaches 9,807 kPa (1,422 psi). Hold brake pedal in that position and check rear brake pressure. Rear brake pressure should be 3,432 - 4,805 kPa (498 - 697 psi)
7. Check rear brake pressure in the same manner.
^ If specification are out of range, replace as necessary and observe the following:
^ Carefully monitor brake fluid level at master cylinder.
^ Use new "DOT 3" brake fluid.
^ Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on paint areas, wash it away with water immediately.