LP122A/LP122A-4000/LP123/LP255 - Repair Instructions

1.With a 30mm wrench, re- move the six (6) plugs

(48)from the valve cas- ing (43). Inspect the o- rings (48A) and replace if necessary.

Remove the complete valve assembly (46A) by threading a 12mm bolt into the spring retainer and pulling straight out.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

44A

44

45

48

47

 

 

 

 

 

 

 

 

 

 

2.To disassemble the valve, screw the bolt into the retainer until the valve plate (45) presses the valve seat (44) out of the spring retainer. Examine all parts and replace if neces- sary. If the seat doesn’t come out, use a valve puller to remove.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

36A

36

35

35A

35B

39

40

40

41

37

 

 

 

 

 

 

 

 

(LP255 only)

 

 

 

 

 

 

 

 

(LP255 only)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.Remove the eight (8) hex nuts (49A) with a 19mm wrench. Tap the back of the manifold (43) with a rubber mallet to dislodge and slide off the studs.

5.If there are signs of

oil leaking through the plunger oil seals, then replacment is neccessary. Dissassemble the gear end and push out the seals from the back of the pump.

4.Remove the seal sleeve (35) from the manifold and/or crankcase. Remove the pressure rings (39&36A), v-sleeves (40&36), support ring (41) and o-rings (35A and 35B in Lp255A only) from the manifold and seal sleeve, respec- tively. For LP255 only, remove support ring (37). Examine seals carefully and replace if worn. Clean all parts.

29E

29A

29B

29D

29C

6.Inspect surface of plunger pipe (29B) carefully. Remove any chemical or mineral deposits taking care not to damage the surface of the plunger. If plunger pipe is worn, remove the plunger bolt (29C) , plunger pipe (29B) and spacer (29E). Replace worn parts necessary. Note: Always use a new copper gasket (29) when repairing the plunger assem- bly.

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Giant operating instructions LP122A/LP122A-4000/LP123/LP255 Repair Instructions
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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.
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