Giant LP122A operating instructions Pump System Malfunction

Page 7

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

 

 

 

Pump Pressure as

Restricted discharge plumbing

Re-size discharge plumbing to Flow

Rated, Pressure

 

Rate of Pump

Drop at Gun

 

 

 

 

 

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 Gallon) p/n 1154

 

 

X

X

 

 

 

 

Seal Spare Parts (1 kit/pump)

 

 

 

 

X

 

 

 

(See page 5 for kit list)

 

 

 

 

 

 

 

 

Oil Seal Kit (1 kit/pump)

 

 

 

 

X

 

 

 

(See page 5 for kit lit)

 

 

 

 

 

 

 

 

Valve Spare Parts (1 kit/pump)

 

 

 

 

 

 

X

 

(See page 5 for kit list)

 

 

 

 

 

 

 

7

Image 7
Contents LP122A/LP122A-4000/LP123/LP255 Important Operating Conditions Installation InstructionsPulley Information Horsepower InformationExploded View LP122A/LP122A-4000/LP123/LP255 Partno Description LP122A/LP122A-4000/LP123/LP255 Parts ListSpecifications Model LP255 Pump System Malfunction LP122A/LP122A-4000/LP123/LP255 Repair Instructions To Reassemble Proceed AS Follows LP122A/LP122A-4000/LP123/LP255 Torque Specifications LP122A/LP123/LP255 Dimensions mm LP122A-4000 Dimensions mm Giant Industries Limited Warranty

LP122A specifications

The Giant LP122A is a versatile and powerful bicycle renowned for its robust design and advanced technology, making it a popular choice among cycling enthusiasts and casual riders alike. This bike combines quality materials, innovative engineering, and user-friendly features, ensuring an enjoyable riding experience for all.

One of the standout features of the Giant LP122A is its lightweight aluminum frame. With a focus on durability and strength, the aluminum construction offers excellent resistance to corrosion while maintaining a low overall weight. This ensures that riders can navigate various terrains with ease, making it ideal for both urban commuting and off-road adventures. The geometry of the frame is designed to provide a comfortable riding position, promoting stability and control during long rides.

The LP122A is equipped with a high-performance drivetrain, featuring a smooth-shifting system that allows for quick and precise gear changes. This feature is especially beneficial when tackling steep hills or navigating tricky paths, as riders can easily adjust their speed and cadence. The bike typically incorporates quality components from reputable brands, ensuring reliability and longevity.

Another key characteristic of the Giant LP122A is its enhanced suspension system. The front suspension fork absorbs shocks and bumps, providing a smoother ride on rough terrain. This is particularly important for mountain biking, where uneven surfaces can pose challenges. Additionally, the suspension settings are often adjustable, allowing riders to customize their experience based on personal preferences and riding conditions.

Braking performance is crucial for safety, and the LP122A excels in this aspect with responsive disc brakes. These brakes offer superior stopping power, ensuring that riders can confidently handle various speeds and descents. Disc brakes provide consistent performance in wet or muddy conditions, making this bike suitable for all-weather riding.

In terms of aesthetics, the Giant LP122A boasts a modern design with vibrant color options that appeal to a broad range of riders. With its sleek lines and attention to detail, the bike not only performs well but also looks stylish on the road or trail.

Overall, the Giant LP122A stands out as an exceptional bicycle that combines advanced technology, robust features, and user-friendly characteristics. Whether for commuting, recreational riding, or tackling tough trails, the LP122A offers a reliable and enjoyable option for cyclists seeking performance and comfort.