REASSEMBLY INSTRUCTIONS - P420A-3100/5100 PUMPS

9)Check surfaces of plunger pipe (16B).

10)Place each seal case (20) with new o-rings (21 and 22) and new oil seals (19) over plungers (16) with weep hole down. Gener- ously lubricate o-rings and oil seals before reassembly.

11)Place pressure rings and weep seals (23B) over plungers and into each seal case (20).

14)Slide valve casing over plungers and seat firmly. Replace the 8 socket head cap screws (34) and tighten to 35 ft.-lbs. in a crossing pattern (as shown below).

12)Place weep return rings (25) over the plunger (16) and pressure ring over plunger (24).

6

4

2

7

8

1

3

5

13) Generously lubricate

 

 

 

v-sleeves. Assemble spacer rings (23A), and v-sleeves (23) into valve casing (26).

Pump Mounting Selection Guide

Bushings

07175 - 28 mm Tapered H Bushing

Pulley & Sheaves

01055 - 7.75”Cast Iron 2 gr. - AB Section 01062 - 7.75”Cast Iron - 2 gr. - AB Section

Rails

07358 - Plated Steel Channel Rails (L=9.18"xw=1.88"xh=3.00")

Contact Giant Industries for service school information. Phone: (419) 531-4600

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Giant operating instructions Reassembly Instructions P420A-3100/5100 Pumps, Pump Mounting Selection Guide

P420A-3100 specifications

The Giant P420A-3100 and P420A-5100 are two advanced compact excavators designed for versatility, efficiency, and performance in diverse job sites. Engineered by Giant, a company well-regarded for its innovative machinery, these models bring a wealth of features and technologies that cater to both small and large-scale projects.

The P420A-3100 is equipped with a powerful engine that delivers optimal performance while maintaining fuel efficiency. This model is designed for a broad range of applications, from landscaping to construction, making it an essential tool for contractors and operators. It offers a compact design that allows for easy maneuverability in tight spaces, paired with an impressive lifting capacity that enables users to handle heavy materials effortlessly.

In contrast, the P420A-5100 provides enhanced power and functionality. It features a larger engine with increased horsepower, contributing to superior digging performance. The P420A-5100 is particularly suited for more demanding tasks, such as heavy-duty excavation and demolition. Its robust construction ensures durability, enabling it to withstand rigorous use in challenging environments.

Both models incorporate advanced hydraulic systems that enhance operational efficiency and effectiveness. The hydraulic systems provide precise control over the excavator's movements, allowing for smoother operations and improved productivity. These excavators also come equipped with an ergonomic operator's cabin that prioritizes comfort and visibility, reducing fatigue during long working hours.

Another notable characteristic of both the P420A-3100 and P420A-5100 is their versatility in attachments. They can easily accommodate various attachments, such as buckets, augers, and grapples, further expanding their functionality. This adaptability makes them valuable assets for businesses that require multifunctional equipment.

Safety is also a key consideration in the design of these excavators. Both models are equipped with features such as safety guards and reinforced structures to protect the operator and the machine. The maintenance access points are thoughtfully designed to simplify inspections and servicing, contributing to reduced downtime.

In summary, the Giant P420A-3100 and P420A-5100 are powerful compact excavators that excel in performance, versatility, and safety. With their advanced technologies and thoughtful design, these models cater to the needs of various sectors, making them indispensable tools for operators and contractors alike. Transitioning between tasks is seamless, thanks to their ability to adapt to different attachments, solidifying their reputation in the excavator market.