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

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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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Contents Models P420A-3100 & P420A-5100 Important Operating Conditions Installation InstructionsPulley Information Horsepower InformationPart Description QTY P420A-3100/5100 Pump Parts ListExploded View P420A-3100/5100 Pumps Repair Instructions P420A-3100/5100 Pumps Pump Mounting Selection Guide Reassembly Instructions P420A-3100/5100 PumpsGiant Industries Limited Warranty
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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.

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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.

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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.