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4 EATON 420 Mobile Piston Pump Technical Manual E-PUPI-TM002-E4 November 2014

Model Codes

420 Mobile Piston Pump

1 2 3

Pump Series

ADU – 420 Series Open

Circuit Piston Pump

4 5 6

Pump Displacement

041 – 41.0 cm3/r [2.50 in3/r]

049 – 49.2 cm3/r [3.00 in3/r]

062 – 62.3 cm3/r [3.80 in3/r]

080 – 80.0 cm3/r [4.88 in3/r]

7

Input Shaft Rotation

R – Right Hand

L – Left Hand

8 9

Front Mount and Shaft

01 – 2 Bolt B, 22.2 mm

(0.875in.) Dia. Keyed Shaft

02 – 2 Bolt B, 25.4 mm

(1.00in.) Dia. Keyed Shaft

03 – 2 Bolt B, 22.22 mm

(.875in.) Dia. Tapered

Keyed Shaft

05 – 2 Bolt B, 13 Tooth 16/32

Spline

08 – 2 Bolt B,15 Tooth 16/32

Spline

32 – 2/4 Bolt C, 14 Tooth 12/24

Spline

33 – 2/4 Bolt C, 31.8 mm

(1.25in) Dia. Keyed Shaft

34 – 2 Bolt B, 15 Tooth 16/32

Sled Runner Spline

35 – 2 Bolt B, 14 Tooth 12/24

Spline

38 – 2/4 Bolt C, 31.75 mm

(1.25) Dia. Tapered Keyed

Shaft

10 11

Main Ports Size

& Location

AA –

Rear Ports

Suction - 2” (Code 61);

Pressure - 1” (Code 61)

AB –

Side Ports

Suction - 2” (Code 61);

Pressure - 1” (Code 61)

AC – Rear Ports

Suction - 2” (Code 61)

with M12 Threads;

Pressure - 1” (Code 61)

with M10 Threads.

AD – Side Ports

Suction - 2” (Code 61)

with M12 Threads;

Pressure - 1” (Code 61)

with M10 Threads.

AE –

Rear Ports

Suction - SAE O-Ring

Port; Pressure - UN-2B

SAE O-Ring Port (ADU041

& ADU049 only)

AF

–

Side Ports

Suction - #24 SAE O-Ring;

Pressure - #16 SAE

O-Ring (ADU041 and

ADU049 Only)

AG – Rear Ports

Suction - M48

Metric O-Ring;

Pressure - M33

Metric O-Ring

(ADU041 & ADU049 Only)

AH – Side Ports

Suction - M48

Metric O-Ring;

Pressure - M33

Metric O-Ring

(ADU041 & ADU049 Only)

AK – Rear Ports

Suction - 2” (Code 61);

Pressure - #16 SAE

O-Ring (ADU062 Only)

12

Case Drain Ports

1 – #12 SAE O-Ring - Top

2 – #12 SAE O-Ring - Bottom

3 – M27 x 2 O-Ring - Top

4 – M27 O-Ring - Bottom

5 –

#12 SAE O-Ring - Left Side

(Swash Sensor Boss)

6 – G 3/4 (BSPP) - Top

13

Diagnostic Pressure Ports

Not available on thru-drive

units

0 – No Diagnostic Pressure

Ports

1 – #6 SAE O-Ring - Plugged

(Rear Ports Only)

2 – M14 Metric O-Ring -

Plugged (Rear Ports Only)

3 – #4 SAE O-Ring - Plugged

(Side Ports Only)

4 – M12 Metric O-Ring -

Plugged (Side Ports Only)

14

Controller Type

A – Pressure Flow

Compensator With

#4 SAE O-Ring

Load Sense Port

B – Pressure Flow

Compensator With

M12 Metric O-Ring

Load Sense Port

C – Pressure Compensator

Only

E – Pressure Flow

Compensator With

G 1/4 (BSPP) Load Sense

Port

H – Pressure Flow

Compensator With

Torque Control #4 SAE

O-Ring Load Sense Port

J – Pressure Flow

Compensator With Torque

Control M12 Metric O-Ring

Load Sense Port

K – Pressure Compensator

With Torque Control

V – EH Inverse Proportional

Pressure Control

W – Remote Pressure Control

with .4375-20 SAE O-Ring

Port, Left Side

#

15 16

Pressure Compensator

Setting (Tolerance on

Setting)*

28 – 207-214 bar

[3000-3100 lbf/in2]

35 – 241-248 bar

[3500-3600 lbf/in2]

43 – 276-283 bar

[4000-4100 lbf/in2]

ADU 062 R 08 AB 1 0 A 43 14 00 0A 1 AB 1 00 CD 0 B

1

7 12 13 14 21 22 23 26

2 3 4 5 6

8 9

10 11 15 16 17 18 323129 3027 2824 2519 20

* Additional Settings Available by

Request

# - Recommend RPC pressure settings

10-21 bar (140-350 psi)

1 2 3 4 5 6 7 8 9 ... 42 43

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