Giant GP7145 installation instructions Pump System Malfunctions

Page 9

PUMP SYSTEM MALFUNCTIONS

MALFUNCTION

CAUSE

REMEDY

The Pressure and/

Worn packing seals

Replace packing seals

or the Delivery Drops

Broken valve springs

Replace springs

 

 

Belt slippage

Tighten or Replace belt

 

Worn or Damaged nozzle

Replace nozzle

 

Fouled discharge valve

Clean valve assembly

 

Worn or Plugged relief valve on pump

Clean, Reset, and Replace

 

 

worn parts

 

Cavitations

Check suction lines on inlet

 

 

of pump for restrictions

 

Unloader

Check for proper operation

Water in Crankcase

High Humidity

Reduce oil change intervals

 

Worn Seals

Replace seals

Noisy Operating

Worn bearings

Replace bearings, Refill

 

 

crankcase oil with recommended

 

 

lubricant

 

Cavitation

Check inlet lines for restrictions

 

 

and/or proper sizing

Rough/Pulsating

Worn packing

Replace packing

Operation with

 

 

Pressure Drop

Inlet restriction

Check system for stoppage

 

 

 

air leaks, correctly sized

 

 

inlet plumbing to pump

 

Accumulator pressure

Recharge/Replace accumulator

 

Unloader

Check for proper operation

 

Cavitation

Check inlet lines for restrictions

 

 

and/or proper size

Pump Pressure as

Restricted discharge plumbing

Re-size discharge plumbing to flow

Drop at gun Rated,

 

rate of pump

Pressure

 

 

Excessive

Worn plungers

Replace plungers

Leakage

Worn packing/seals

Adjust or Replace packing seals

 

 

Excessive vacuum

Reduce suction vacuum

 

Cracked plungers

Replace plungers

 

Inlet pressure too high

Reduce inlet pressure

High Crankcase

Wrong Grade of Oil

Giant oil is recommended

Temperature

Improper amount of oil in crankcase

Adjust oil level to proper amount

 

9

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Contents Models GP7145 and GP7255A Installationinstructions Metric Specifications Model GP7145Exploded View GP7145 and GP7255A Parts List GP7145 and GP7255A GP7255A Pulley Selection & Horsepower Requirements Specifications Model GP7255ARepair Kits GP7145 and GP7255A GP7145 and GP7255A Torque SpecificationsTo Check Valves GP7145 and GP7255A Repair InstructionsPump System Malfunctions GP7145 and GP7255A Dimensions Inches mm Page Giant Industries Limited Warranty

GP7145 specifications

The Giant GP7145 is a high-performance bicycle that has captured the attention of cycling enthusiasts and professional riders alike. This model exemplifies innovation and quality in bike engineering, making it a standout in the competitive cycling market.

One of the primary features of the Giant GP7145 is its lightweight frame, constructed from advanced aluminum alloy. This material not only contributes to the bike's overall agility but also enhances durability and strength. Riders will appreciate the responsiveness and maneuverability that the lightweight design provides, especially during long rides or competitive events.

The GP7145 is equipped with an advanced suspension system, which includes a front fork with adjustable travel. This technology allows riders to customize their experience based on terrain and personal preference. Whether tackling rugged trails or cruising on smooth pavements, the suspension system provides optimal comfort and control, reducing fatigue during extended rides.

Another remarkable characteristic of the Giant GP7145 is its state-of-the-art gear system, featuring a high-precision, multi-speed drivetrain. This component ensures seamless shifting, allowing riders to tackle steep hills or accelerate quickly on flat roads with ease. The gear ratios are designed to cater to various riding styles, whether you are a casual rider or seeking to push your limits in competitive racing.

Braking performance is also a priority in the design of the GP7145. The bike comes with hydraulic disc brakes that offer phenomenal stopping power, enhancing safety and control in all conditions. This feature is particularly beneficial in wet or muddy environments, where reliable braking is crucial.

The GP7145 is designed with rider ergonomics in mind. The geometry of the frame allows for a comfortable riding position, reducing strain on the back and shoulders during long rides. Additionally, the bike features adjustable components such as the seat and handlebars, ensuring a perfect fit for riders of different heights and preferences.

Lastly, the aesthetic appeal of the Giant GP7145 cannot be overlooked. With a sleek design and vibrant colors, this bicycle not only performs exceptionally but also stands out visually. Overall, the Giant GP7145 encapsulates the perfect blend of technology, performance, and comfort, making it an excellent choice for a wide range of cyclists seeking quality and reliability in their rides.