When did Chevrolet start using hydraulic brakes?

The first Chevrolet trucks to have hydraulic brakes were the 1935 Canadian Maple Leaf 2 ton trucks.

What is Hydrovac brake booster?

Vacuum Power. Booster (Hydrovac) Booster works the same as a vacuum. suspended, and is triggered by the master. cylinder to operate the slave cylinder.

When were hydraulic brakes first used?

1918
Hydraulic brakes Malcolm Loughead first introduced the concept of the use of hydraulics in brake systems in 1918, according to Greg Monforton and Partners. When drivers pressed the pedal, fluids would carry force to the pistons and the brake shoes.

How do you test a hydrovac brake system?

Vacuum Power Check

Apply the brake pedal with the vehicle ignition off to remove all vacuum from the system.
Depress the brake pedal, hold foot pressure on it and then start the engine.
If the vacuum system is operating properly, the pedal will move downward.

What was the weight of a Chevy series 70?

GVW from 21,000 to 40,500 lbs, GCWs to 60,000 lbs. Tandem rear axle models ME65 were available with 149-185 inches wheelbases and still used Hendrickson components. Series 70 (Chevy C70) was available from the end of 70s with GVW to 33,400 lbs for single rear axle model, and up to 50,000 lbs for tandem.

What was the wheelbase of a Chevy C65?

Series 65 (Chevy C65) had wheelbases from 125 to 218 inches. Standard specification included V8 power, 4-speed or 5-speed transmission, 7,000-lb. front axle and 17,000-lb rear (except ME65 with 30,000-lb. tandem rear axles).

What was the wheelbase of a Chevy C50?

Series 50 (Chevy C50) had wheelbases from 125 to 167 inches for a wide range of applications. Standard components included in-line Six or V8 power, depending on model; 4-speed transmission; 5,000-lb. front axle and 11,000-lb. rear axle. GVWs from 13,500 to 18.500 lb.

What was the new Chevy truck in 1973?

In 1973, Chevrolet presented an updated medium duty range. The trucks received a new tough, injection molded, one-piece plastic grille. The new massive front bumper provides increased surface area and strength. The customer could choose between a new alligator hood design and fiberglass tilt hood design.

What was the weight of a Chevy C70?

Series 70 (Chevy C70) was available from the end of 70s with GVW to 33,400 lbs for single rear axle model, and up to 50,000 lbs for tandem.

Can a MITY VAC bleed a Hydrovac brake?

Bled that brake using a Mity Vac until there was no air, pulled about 2 cups of brake fluid through it after no air just to make sure. Pedal felt fine, everything checked out ok.

Why do you need Hydrovac brakes in a truck?

Hydrovac brakes. Think of the $ lost with a wreck, or downtime if something in the master cylinder or boost unit conks out on you and you have to wait a week or two to fix it. Air brakes or hydraulic are a deal maker/breaker for most on this board looking to buy a truck, for good reasons….

When did I get my 1977 Chevy truck?

Back in 1992, at a local swap meet, I paid $30 for the same GM factory Service manual for my 77. The older manuals didn’t include wiring. I currently have a bid in myself on a 1977 GM Factory Wiring Manual. The bid is currently $10. I just also won a bid on a 1977 GM Dealer Album.