MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
Vehicle Recovery and Spring Brakes 1. Into the pinion cage, add 1 pint (.47 liter) of lubricant. 2. Into the inter-axle differential, add 2 pints (.94 liter) of approved lubricant. • See “Recommended Lubrication Types,” Page 137. 3. After adding the specified type and amount of lubricant, drive the vehicle. It should be unloaded. Drive 1 to 2 miles (1.5 to 3 km) at a speed lower than 25 mph (40 km/ h). This will thoroughly circulate the lubricant through the assembly. Spring Brakes — Manual Release In order to tow a vehicle, if there is insufficient air to release the parking brake, the spring brakes can be manually released. Operating Instructions WARNING! Do not drive vehicle with malfunctioning brakes. If one of the brake circuits should become inoperative, braking distances will increase substantially and handling characteristics while braking will be affected. You could lose control of your vehicle, be severely injured, or cause an accident. Have it towed to the nearest dealer or qualified workshop for repair. You may sometimes have to release your vehicle’s spring brakes by hand. This could happen if the system air pressure does not reach operating pressure because your engine or compressor is not working properly. You will have to release the spring brakes at the spring brake chambers. WARNING! Do not disassemble a spring brake chamber. These chambers contain a powerful spring that is compressed. Sudden release of this spring can cause you to be severely injured. • Do not operate a vehicle when the spring brakes have been manually released. Driving a vehicle after its spring brakes are manually released is extremely dangerous. You will probably have no brakes at all. You could have a serious or fatal accident. • Releasing the spring brakes on an unsecured vehicle could lead to an accident. The vehicle could roll, causing severe injury. Always secure the vehicle – 110 – PB1318 3/01 Model 330
Operating Instructions with wheel chocks, chains, or other safe means to prevent rolling before manually releasing the spring brakes. Vehicle Recovery and Spring Brakes 3. Slide out the release stud. To move a vehicle immobilized by the spring brakes due to loss of air pressure in the brake system, perform the following procedure: 1. Remove the cap from the spring chamber. 2. Remove the release stud assembly from the side pocket, and remove the release nut and washer from the release stud. 4. Insert the release stud through the opening in the spring chamber where the cap was removed. Insert it into the pressure plate. Turn the release stud 1/4 turn clockwise in the pressure plate. This secures the cross pin into the cross pin area of the pressure plate and locks it into the manual release position. 5. Assemble the release stud washer and nut on the release stud. Model 330 PB1318 3/01 – 111 –
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Vehicle Recovery and Spring Brakes<br />
1. Into the pinion cage, add 1 pint (.47 liter) of lubricant.<br />
2. Into the inter-axle differential, add 2 pints (.94 liter) of<br />
approved lubricant.<br />
• See “Recommended Lubrication Types,” Page<br />
137.<br />
3. After adding the specified type and amount of lubricant,<br />
drive the vehicle. It should be unloaded. Drive 1 to 2<br />
miles (1.5 to 3 km) at a speed lower than 25 mph (40 km/<br />
h). This will thoroughly circulate the lubricant through the<br />
assembly.<br />
Spring Brakes — Manual Release<br />
In order to tow a vehicle, if there is insufficient air to release<br />
the parking brake, the spring brakes can be manually<br />
released.<br />
Operating Instructions<br />
WARNING! Do not drive vehicle with malfunctioning<br />
brakes. If one of the brake circuits<br />
should become inoperative, braking distances<br />
will increase substantially and handling characteristics<br />
while braking will be affected. You could<br />
lose control of your vehicle, be severely injured,<br />
or cause an accident. Have it towed to the nearest<br />
dealer or qualified workshop for repair.<br />
You may sometimes have to release your vehicle’s<br />
spring brakes by hand. This could happen if the system air<br />
pressure does not reach operating pressure because your<br />
engine or compressor is not working properly. You will have<br />
to release the spring brakes at the spring brake chambers.<br />
WARNING! Do not disassemble a spring brake<br />
chamber. These chambers contain a powerful<br />
spring that is compressed. Sudden release of<br />
this spring can cause you to be severely injured.<br />
• Do not operate a vehicle when the spring brakes<br />
have been manually released. Driving a vehicle after<br />
its spring brakes are manually released is extremely<br />
dangerous. You will probably have no brakes at all.<br />
You could have a serious or fatal accident.<br />
• Releasing the spring brakes on an unsecured vehicle<br />
could lead to an accident. The vehicle could roll,<br />
causing severe injury. Always secure the vehicle<br />
– 110 – PB1318 3/01 Model <strong>330</strong>