PUMP SYSTEM MALFUNCTION

MALFUNCTION

CAUSE

REMEDY

The Pressure and/

Worn packing seals

Replace packing seals

or the Delivery

Broken valve spring

Replace spring

Drops

Belt slippage

Tighten or Replace belt

 

Worn or Damaged nozzle

Replace nozzle

 

Fouled discharge valve

Clean valve assembly

 

Fouled inlet strainer

Clean strainer

 

Worn or Damaged hose

Repair/Replace hose

 

Worn or Plugged relief valve on pump

Clean, Reset, and Replace worn parts

 

Cavitation

Check suction lines on inlet of

 

pump for restrictions

 

 

Unloader

Check for proper operation

 

 

 

Water in crankcase

High humidity

Reduce oil change interval

 

Worn seals

Replace seals

 

 

 

Noisy Operation

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

Inlet restriction

Check system for stoppage, air

Pressure Drop

 

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

 

 

 

Pressure Drop at Gun

Restricted discharge plumbing

Re-size discharge plumbing to

 

 

flow rate of pump

 

 

 

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

Preventative Maintenance Check-List & Recommended Spare Parts List

 

 

 

 

 

 

 

 

 

Check

Daily

Weekly

50hrs

Every

Every

Every

 

 

 

 

 

500 hrs

1500 hrs

3000 hrs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil Level/Quality

X

 

 

 

 

 

 

 

Oil Leaks

X

 

 

 

 

 

 

 

Water Leaks

X

 

 

 

 

 

 

 

Belts, Pulley

 

X

 

 

 

 

 

 

Plumbing

 

X

 

 

 

 

 

 

 

 

Recommended Spare

Parts

 

 

 

 

Oil Change (1 Quart) p/n 1153

 

 

X

X

 

 

 

 

Seal Spare Parts (1 kit/pump)

 

 

 

 

X

 

 

 

(See page 12 for kit list)

 

 

 

 

 

 

 

 

Oil Seal Kit (1 kit/pump)

 

 

 

 

X

 

 

 

(See page 12 for kit lit)

 

 

 

 

 

 

 

 

Valve Spare Parts (1 kit/pump)

 

 

 

 

 

 

X

 

(See page 12 for kit list)

 

 

 

 

 

 

 

13

Page 13
Image 13
Giant P227, P219, P220, P218, P217, P221, P230 service manual Pump System Malfunction

P227, P218, P221, P217, P219 specifications

Giant's P Series bikes, including the P221, P217, P220, P223, and P219, exemplify cutting-edge engineering and design, catering to a diverse range of cyclists. Each model in this series is crafted with precision, ensuring exceptional performance and comfort across various terrains.

The P221 stands out with its lightweight aluminum frame, which balances strength and agility. This bike features a state-of-the-art suspension system that ensures a smooth ride over rough terrains while enhancing control. The P221 is equipped with Shimano components, providing reliable shifting and robust performance, making it an ideal choice for both casual riders and serious mountain bikers.

Moving on to the P217, this model emphasizes versatility. It combines a sleek design with a durable construction suitable for both urban commuting and off-road adventures. The P217 incorporates hydraulic disc brakes that offer superior stopping power in all weather conditions. The bike also boasts wide tires, ensuring excellent grip and stability, which makes it a reliable option for challenging trails.

The P220 model integrates advanced technological features that enhance the riding experience. It uses a proprietary electronic shifting system that allows for precise gear changes with minimal effort. Additionally, the P220 includes a dynamic suspension system, which automatically adapts to the terrain, maximizing both comfort and efficiency during rides. Its aerodynamic frame geometry further contributes to speed and agility, making it an excellent choice for competitive cycling.

For those who prioritize speed and performance, the P223 is engineered for high-speed rides. It features a carbon fiber frame that reduces weight while enhancing stiffness and responsiveness. The P223 is fitted with aerodynamic handlebars and a racing saddle, which contribute to reduced drag and increased efficiency on flat roads. This model is particularly suited for road cyclists looking to push their limits.

Lastly, the P219 rounds out the series, offering a balanced blend of comfort and capability. This bike is designed with an emphasis on ergonomics, featuring a wider saddle and adjustable handlebars that cater to long-distance rides. The P219 is equipped with high-quality tires that provide excellent traction, ensuring stability on various surfaces. With its user-friendly design, this model is perfect for beginners and experienced riders alike.

In conclusion, Giant's P Series—P221, P217, P220, P223, and P219—offers a broad spectrum of features and technologies that cater to all types of cyclists. Each model reflects Giant’s commitment to quality, performance, and innovation, making them a tremendous addition to any rider’s collection. Users can confidently choose a model that fits their individual riding style, ensuring a satisfying cycling experience.