Jacobsen AR331 Guide

Parts Manual
WARNING
Warning: If incorrectly used, this machine can
cause severe injury. Those who use and maintain
this machine should be trained in its proper use,
warned of its dangers, and must read the entire
manual before attempting to set up, operate, adjust,
or service the machine.
When Performance Matters.
™
GB
Rotary Trim Mower
062801-D400 - AR331, Kubota® D1105-E4B, 3WD, Treaded Tires
679460-Rev A

Copyrighted Material
This manual may not re reproduced in whole or in part without the
express permission of TSV (Augusta) Technical Communications
Department.
This manual contains adjustment, maintenance,
troubleshooting instructions and parts list for your new
Jacobsen machine. This manual should be stored with
the equipment for reference during operation.
Before you operate your machine, you and each operator
you employ should read the manual carefully in its
entirety. By following the safety, operating and
maintenance instructions, you will prolong the life of your
equipment and maintain its maximum efficiency.
If additional information is needed, contact your
Jacobsen Dealer.
The serial plate is located on the left rear frame rail.
Jacobsen recommends you record these numbers below
for easy reference.
Kg Kw Kg Kg
West Road
Ransomes Europark
Ipswich IP3 9TT
England
ABCD E
FG
HJ
2
Proposition 65 Warning
This product contains or emits
chemicals known to State of California
to cause cancer and birth defects or
other reproductive harm.
FOREWORD
Suggested Stocking Guide
To Keep your Equipment fully operational and productive, Jacobsen suggests you maintain a stock of the more
commonly used maintenance items. We have included part numbers for additional support materials and training aids.
To order any of the following material:
1. Write your full name and complete address on your
order form.
2. Explain where and how to make shipment:
❑UPS ❑Regular Mail
❑Overnight ❑2nd Day
3. Order by the quantity desired, the part number, and
the description of the part.
4. Send or bring the order to your authorized Jacobsen
Dealer.
11-2018
Service Parts
Service Support Material
Qty. Part No. Description Qty. Part No. Description
4113986 Engine Oil Filter 4283654 Ignition Key
5000913 Element, Engine Air Filter 4176550 Engine Fan Belt
550489 Cartridge, Engine Fuel Filter
2811255 Charge Filter
Qty. Part No. Description
TBD Safety & Operation Manual
679460 Parts Manual
TBD Service Manual
Diesel Engine Parts Manual
Qty. Part No. Description

Table of Contents
1
1.1 ......... Operator Platform ............................................... 4
2.1 ......... Seat Options ........................................................ 6
3.1......... Armrest and Control Panel ................................ 8
4.1 ......... Traction Pedal ................................................... 10
5.1 ......... Traction Linkage ............................................... 12
6.1 ......... Chassis .............................................................. 14
7.1 ......... Front Axle Assembly ........................................ 16
8.1 ......... Front Axle .......................................................... 18
9.1.........Rear Axle Assembly ......................................... 20
10.1 ....... Rear Axle ........................................................... 22
11.1 ....... Air Filter ............................................................. 24
12.1 ....... Radiator ............................................................. 26
13.1 ....... Remote Engine Oil Cooler and Filter .............. 28
14.1 ....... Engine Mounting ............................................... 30
15.1.......Engine and Pumps............................................ 32
16.1 ....... Engine Exhaust ................................................. 34
17.1 ....... Fuel Tank and Routing ..................................... 36
18.1.......Hydraulic Tank and Hood................................. 38
19.1.......Hydraulic Valve Assembly ............................... 40
20.1 ....... 3WD Traction Hydraulics ................................. 42
21.1.......3WD Gear Pump and Steering Hydraulics...... 44
22.1.......Front And Rear Motor Hydraulics ................... 46
23.1.......Front And Rear Lift Hydraulics........................ 48
24.1 ....... Drain Hydraulics ............................................... 50
25.1.......Brake Valve and Charge Hydraulics ............... 52
26.1 ....... Oil Cooler Hydraulics ....................................... 54
27.1 ....... Electrical ............................................................ 56
28.1 ....... Side Shift Attachment....................................... 58
29.1 ....... Brake Valve........................................................ 60
30.1 ....... Lift-Weight Transfer Valve ............................... 62
31.1 ....... Steering Cylinder .............................................. 64
32.1....... Center, Left and Right Decks.......................... 66
32.1.......Center, Left and Right Decks (Cont....) ........... 68
33.1 ....... Deck Valve ......................................................... 70
34.1.......Rotary Bump Stop ............................................ 72
35.1 ....... Lift Arms ............................................................ 74
36.1.......Rotary Unit Mounting ....................................... 76
37.1 ....... Steering Valve ................................................... 78
38.1 ....... Gear Pump ......................................................... 80
39.1 ....... Traction Pump ................................................... 82
39.1.......Traction Pump (Continued).............................. 84
40.1.......3WD Rear Wheel Motor .................................... 86
41.1 ....... Electrical Schematic ......................................... 88
42.1 ....... Hydraulic Schematic......................................... 92

4
AR331
1.1 Operator Platform Serial No. All
1
1
1
12
3
4
4
5
5
5
6
6
7
8
9
10
10
11
12
12
13
14
31
15
16
16
17
17
18
19
20
20
21
21
27
27
26
26
28
28
29
29
22
23
23
24
25
4397486
®
3008682
4181865 REV B
3
30
32
16°+
009114170

5
> Change from previous revision
AR331
Item Part No. Qty. Description Serial Numbers/Notes
1001191331 4 Screw, M5-0.8 x 16 mm Taptite
2 001496150 16 Pop Rivet, 3.2 x 10 mm Stainless Steel
3 4314427 4 1/4 Turn Fastener
4 4314429 4 1/4 Turn Steel Retainer
5 4314430 4 1/4 Turn Receptacle
6 4394747 2 Cover, Chassis End
7 671357 1 Platform, Operator
8 4395663 1 Cover, Steering Tower
9 671682 1 Adhesive Foam, 578 mm
10 4395665 2 Adhesive Foam, 3 x 4 x 90 mm
11 4395666 1 Adhesive Foam, 4 x 5 x 529 mm
12 4395667 2 Adhesive Foam, 3 x 5 x 202 mm
13 671556 1 Plate, Rear Backing
14 671585 1 Panel, Rear Service
15 4395869 1 Panel, Floor Service
16 450029 4 Hex Head Screw, M10-1.5 x 35 mm
17 450241 4 Hex Head Screw, M12-1.75 x 30 mm
18 450357 4 Nut, M6-1 Insert (0.7 to 4.2)
19 450389 4 Washer, M6 x 12.5 x 1.8
20 450391 4 Washer, M10 x 21 x 2.2
21 450392 4 Washer, M12 x 24 x 2.7
22 450541 4 Pan Head Screw, M6-1 x 16 mm
23 452437 4 Nut, M10-1.5 Flange Nyloc
24 452438 2 Nut, M12-1.75 Flange Nyloc
25 002953223 3 Grommet, 20.6 x 31.8 x 9.5 mm
26 4397486 1 Decal, Traction Pedal
27 669813 1 Decal, Jacobsen Decal
28 4181865 1 Decal, Mower Warning
29 3008682 1 Decal, Tow Valve
30 4420394 1 Floor Board Grip Tape
31 4420395 1 Access Panel Grip Tape
32 009114170 1 Decal, Max Slope 16 Deg

6
AR331
2.1 Seat Options Serial No. All
12
3
44
8
8
9
10
10
11
11
12
13
13
13
14
15
15 16
18
18
19
1619
20
21
21
23
23
23
24
24
26
27
17
25
22
22
5
56
6
7
7
26
27

7
> Change from previous revision
AR331
Item Part No. Qty. Description Serial Numbers/Notes
14193341 1 Adjuster, Seat Rail
2 4193344 1 Adjuster, Seat Rail with Handle
3 4280951 1 Suspension Seat
4 4203220 4 Screw, M8-1.25 x 20 mm Square Hd
5 450413 2 Lock Washer, M12 x 17.9 x 2.5
6 452000384 2 Washer, 7/16 x 7/8 x 0.092
7 456010967 2 Screw, 7/16-20 x 1” Hex Head
8 4257812 1 Seat Belt Includes latch and retractor
9 672483 2 Bracket, Seat Travel Limiter
10 4376647 2 Rail, Seat Mounting
11 4399585 2 Support, Suspension Seat
12 4384346 1 Strap, Fuel Tank
13 4394813 3 Spacer, Seat
14 4395386 1 Foam, Closed Cell 300 mm
15 456110189 4 Hex Head Screw, 5/16-18 x 3/4”
16 450214 4 Hex Head Screw, M10-1.5 x 25 mm
17 450470 4 Hex Flange Screw, M8-1.25 x 16
18 450216 2 Hex Head Screw, M10-1.5 x 35 mm
19 450391 4 Washer, M10 x 22 x 2.2
20 450379 2 Nut, M10-1.5 Hex Nyloc
21 450390 4 Flat Washer, M8 x 17 x 1.8
22 450880 2 CSK Hex Screw, M10-1.5 x 25 mm
23 450401 4 Flat Washer, M10 x 24 x 2.2
24 450411 4 Lock Washer, M8 x 12.75 x 2
25 4399580 1 Armrest Seat Support
26 450453 4 Nut, M8-1.25 Hex Flange

8
AR331
3.1 Armrest and Control Panel Serial No. All
1
2
8
8
4
5
11
11
14
15
28
16
19
20
21
22
23
24
27
27
26
30
30
31
31
32
33
34
34
35
17
18
3
6
26
25
9
13
38
33
39
40
43
10
10
7
11
12
10
42
32
44 27 42 45

9
> Change from previous revision
AR331
Item Part No. Qty. Description Serial Numbers/Notes
14193341 1 Adjuster, Seat Rail
2 4193344 1 Adjuster, Seat Rail with Handle Replace handle with Item 5
3 4362366 1 Plate, Armrest Support
4 672316 1 Rod, Armrest
5 4370626 1 Armrest
6 4395147 1 Top Plate, Armrest Support
7 672309 1 Armrest Cover
8 450192 4 Screw, M8-1.25 x 25 mm Hex Head
9 450357 2 Nut, M6-1 Insert (0.7-4.2)
10 450453 7 Nut, M8-1.25 Hex Flange
11 450471 7 Screw, M8-1.25 x 20 mm Hex Flange
12 450541 2 Screw, M6-1 x 16 Grade 4.8
13 4376648 1 Armrest Seat Support
14 4139764 1 Switch, Parking Brake REFERENCE SW5, See 41.1
15 4150539 1 Horn REFERENCE U3, See 41.1
16 4225220 1 Plug, Panel
17 4283269 1 Switch, 3 Position Key REFERENCE SW1, See 41.1
18 4283653 1 • Nut, M22-1.5 Key Switch Backing
19 4283652 1 • Nut, M22-1.5 Key Switch Face
20 4283654 1 • Key, Replacement
21 4323427 1 Joystick, 2-Axis Lift/Lower REFERENCE SW3, See 41.1
22 4343926 1 Switch, Mow REFERENCE SW2, See 41.1
23 4391938 1 Display, Programmed MAR REFERENCE U2, See 41.1
24 674106 1 Pad, Armrest
25 4125831 2 Switch, Neutral Proximity
26 450516 12 Screw, M4 - 0.7 x 10 Grade 4.8
27 450387 16 Washer, M4 x 9 x 0.9
28 4324707 1 Switch, Rocker DPDT (MOM) For side shift function
29 450516 4 Screw, M4-0.7 x 10 mm Pan Head
30 4374506 1 Decal, Key Switch
31 4392886 1 Decal, Premium Control Panel
32 4395021 1 Control Panel
33 4340548 1 Harness, Premium Console
34 4167640 2 • Cable Tie, Fir Tree
35 4129718 1 • 120ΩCAN Terminating Connector REFERENCE R4, See 41.1
36 672308 1 Side Bracket, Armrest Support
37 452436 3 Nut, M8 Flange Nyloc
38 450391 5 Washer, M10 x 21 x 2.2
39 4290433 2 Screw, Button Head M10 x 25
40 450477 1 Screw, M10 - 1.5 x 20 mm Hex Flange
41 450390 1 Washer, M8 x 17 x 1.8
42 669445 1 Plate, Key Switch
43 450379 2 Nut, M10 - 1.5 Hex Nyloc
44 450519 2 Pan Head Screw, M4 - 0.7 x 16 Grade 8
45 452717 2 Hex Nut, M4-0.7 x 16 mm Grade 8

10
AR331
4.1 Traction Pedal Serial No. All
16
25
22
21
1
6
6
5
5
27
7
8
911
12
12
17
15
17
17
17
17
18
18
19 19
2
24
3
23
26
20
17
12
14
23
16
18
10
21
18
13
23
23
37
33
35
19
30
30
29
31
28
29
34
34
38
3634
353634