GXR SERIES REPAIR INSTRUCTIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

20

19

18

17

 

 

 

 

 

 

 

 

 

 

11.Remove the guided p-valve, (19), valve springs (18), v-sleeves

(21)and pressure rings (20). Inspect for wear and replace as necessary. Remove the spacer ring (17) from the plungers (8).

12.If the crankcase oil seals (15) are to be replaced, they can be removed by prying loose with a screwdriver. Take care not to make contact with the plunger (8) and pry out the oil seals from their housing. Seals should not be rein- stalled until after step #16.

13.Reassemble in reverse order. Fill the crankcase with the proper amount of oil (see specifications page 3) The pump is now ready for operation.

For maintenance of the gear end of your pump, contact your local distributor or Giant Industries at: 419/531-4600

NOTE: Contact Giant Industries for Service School Information.

Phone: (419)-531-4600

GX and HR Pump Part Numbering System

 

 

 

 

 

 

Wobble

 

 

Pressure (in

 

 

Thremal

Plate

 

 

100 psi

 

 

Relief

Shaft

GX or HR Series

Flow

increments)

 

Injector Size

Valve

Bore

 

 

 

 

 

 

 

Vertical

20=GPM

25=2500 PSI

 

1=2.1 mm

1=1/2"

1=3/4"

 

 

 

 

 

 

 

Horizontal

23=GPM

 

 

2=1.8mm

 

2=7/8"

 

 

 

 

 

 

 

 

25=GPM

 

 

3=2.3mm

 

3=1"

 

 

 

 

 

 

 

 

 

 

 

 

 

4=5/8"

 

 

 

 

 

 

 

GX or HR

2.5

25

-

1

1

1

For example, a GXV2525-112 is a GX pump that produces 2.5 GPM @ 2500 PSI, has a injector with a 2.1mm Oriface, 1/2" thermal relief valve and 7/8" wobble plate bore.

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Giant installation instructions GXR Series Repair Instructions, GX and HR Pump Part Numbering System
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GXR specifications

The Giant GXR is an advanced hybrid bike that blends cutting-edge technology with the ruggedness required for various terrains. Designed for both urban commuting and adventurous off-road rides, the GXR embodies versatility and performance, making it an ideal choice for cyclists who seek a reliable and adaptable bike.

One of the standout features of the Giant GXR is its lightweight aluminum frame, which provides the structural integrity needed for stability while remaining easy to handle. The geometry of the bike is engineered for comfort, allowing riders to maintain an upright position during long rides. This design minimizes strain on the back and shoulders, making it a suitable option for daily commuters and long-distance cyclists alike.

The GXR is equipped with a quality suspension system, designed to absorb shocks and bumps encountered on rough terrain. This feature enhances the rider's comfort and control, particularly on trails or uneven surfaces. The adjustable front suspension allows cyclists to customize their ride to suit varying conditions, whether that means tuning it for pavement or off-road trails.

In terms of technology, the Giant GXR comes with an integrated smart display that offers real-time data, including speed, distance traveled, and battery life for models equipped with electric assist. The bike’s pedal-assist technology enables cyclists to conquer steep hills and long distances with ease, providing an extra boost when needed. The intuitive controls and seamless integration of the electric system make it a breeze to switch between assist levels, ensuring a smooth ride tailored to individual preferences.

Another notable characteristic is the GXR's versatile tire design. It runs a set of wide tires that provide excellent grip and stability regardless of the riding surface. Whether tackling gravel paths or navigating city streets, the tires enhance both performance and safety.

Furthermore, the GXR is fitted with high-quality hydraulic disc brakes, ensuring reliable stopping power in various conditions. This braking system offers superior modulation and control, providing peace of mind for riders as they navigate diverse landscapes.

Additional features include a convenient rack for carrying cargo, integrated lights for increased visibility, and fenders to protect against mud and water spray—essentials for cyclists who brave the elements.

Overall, the Giant GXR stands out as a top choice for cyclists seeking a hybrid bike that combines innovation, comfort, and functionality, making every ride an enjoyable experience.
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