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Main Pump: 320, 320L, 320N and 320S Excavator Hydraulic System

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chanlin

The document provides specifications for the hydraulic system of several excavator models. It details the main pump, pilot pump, springs, and other components with measurements and specifications.

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© All Rights Reserved
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Main Pump: 320, 320L, 320N and 320S Excavator Hydraulic System

Uploaded by

chanlin
394 views4 pages
The document provides specifications for the hydraulic system of several excavator models. It details the main pump, pilot pump, springs, and other components with measurements and specifications.

Original Description:

Cat 320

Original Title

320 pump

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© © All Rights Reserved

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PDF, TXT or read online from Scribd

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The document provides specifications for the hydraulic system of several excavator models. It details the main pump, pilot pump, springs, and other components with measurements and specifications.

Copyright:

© All Rights Reserved
Download as PDF, TXT or read online from Scribd
Download as pdf or txt
394 views4 pages

Main Pump: 320, 320L, 320N and 320S Excavator Hydraulic System

Uploaded by

chanlin
The document provides specifications for the hydraulic system of several excavator models. It details the main pump, pilot pump, springs, and other components with measurements and specifications.

Copyright:

© All Rights Reserved
Download as PDF, TXT or read online from Scribd
Download as pdf or txt
You are on page 1/ 4

Service Information System Page 1 of 4

Specifications
320, 320L, 320N AND 320S EXCAVATOR HYDRAULIC SYSTEM
Media Number -SENR5453-03 Publication Date -01/01/2000 Date Updated -11/10/2001

Main Pump
View Image

Rotation is clockwise when seen from drive end.

NOTICE
The main pumps must be filled with hydraulic oil before operation
or damage will result. Add hydraulic oil through the fill port of
each of the main pumps.

Type of pump: Variable displacement, Bent-axis piston pump Bench test with SAE10W oil at
55 ± 5°C (131 ± 12°F).

Output ... 179 ± 3 liter/min (47 ± .8 U.S. gpm)

At a delivery pressure of ... 9800 kPa (1425 psi)

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Service Information System Page 2 of 4

With the power mode setting at ... Mode 3

At a power shift pressure of ... 1770 ± 50 kPa (255 ± 7 psi)

With pump at ... 1800 rpm

Output ... 167 ± 9 liter/min (44 ± 2.4 U.S. gpm)

At a delivery pressure of ... 13 700 kPa (2000 psi)

With the power mode setting at ... Mode 3

At a power shift pressure of ... 1770 ± 50 kPa (255 ± 7 psi)

With pump at ... 1800 rpm

(1) 995736 Spring:

Free length ... 21 mm (.8 in)

Outside diameter ... 11.3 mm (.44 in)

(2) 874758 Spring:

Free length ... 23 mm (.9 in)

Outside diameter ... 16.6 mm (.65 in)

(3) 995837 Spring:

Free length ... 126 mm (5.0 in)

Outside diameter ... 46 mm (1.8 in)

(4) 4I7868 Spring:

Free length ... 61 mm (2.4 in)

Outside diameter ... 31.4 mm (1.24 in)

(5) 4I7869 Spring:

Free length ... 37 mm (1.5 in)

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Service Information System Page 3 of 4

Outside diameter ... 30.2 mm (1.19 in)

NOTE: Use as required the combination of the following shims (6) to acquire dimension (A)
of ... 76 + 0 - 0.05 mm (3.0 + 0 - .002 in):

(6) 9T3376 Shim:

Thickness of one shim ... 2.1 mm (.08 in)

(6) 9T3377 Shim:

Thickness of one shim ... 2.8 mm (.11 in)

(6) 9T3378 Shim:

Thickness of one shim ... 2.9 mm (.11 in)

(6) 9T3379 Shim:

Thickness of one shim ... 3.0 mm (.12 in)

(6) 9T3380 Shim:

Thickness of one shim ... 3.1 mm (.12 in)

NOTE: Use as required the combination of the following spacers (7) to acquire dimension
(B) of ... 4.7 ± 0.05 mm (.19 ± .002 in):

(7) 9T3391 Spacer:

Thickness of one spacer ... 5.3 mm (.21 in)

(7) 9T3392 Spacer:

Thickness of one spacer ... 5.4 mm (.21 in)

(7) 9T3393 Spacer:

Thickness of one spacer ... 5.5 mm (.22 in)

(7) 9T3394 Spacer:

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Service Information System Page 4 of 4

Thickness of one spacer ... 5.6 mm (.22 in)

(7) 9T3395 Spacer:

Thickness of one spacer ... 5.7 mm (.22 in)

(7) 9T3396 Spacer:

Thickness of one spacer ... 5.8 mm (.23 in)

(7) 9T3397 Spacer:

Thickness of one spacer ... 5.9 mm (.23 in)

Pilot Pump (Part Of Main Pump)

Type of pump ... Gear (pilot system)

Bench test with SAE 10W Oil at 55 ± 5°C (131 ± 12°F)

Rotation is clockwise when seen from drive end.

Output of pilot pump ... 22 ± 2 liter/min (5.8 ± .5 U.S. gpm)

At a pressure of ... 3450 kPa (500 psi)

With pump at ... 1800 rpm

Copyright 1993 - 2017 Caterpillar Inc.


All Rights Reserved. Wed Dec 06 2017 21:50:48 GMT+0630 (Myanmar Standard Time)
Private Network For SIS Licensees.

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