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4394RT
Service Manual
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Parts Manual
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Parts Manual
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JLG 4394RT Parts Manual

Illustrated Parts Manual
Models
3394RT
& 4394RT
Prior to
SN 0200191606
P/N
3121836
REVISION LOG
NOTE: For Machines with SN 0200186972, 0200187002 & 0200187013 refer to Illustrated Parts Manual p/n
3121250. These Machines are built to B/M 0010583 Revision 56 or higher specs.
June 1, 2002 - Original Issue Of Manual (Manual edited to B/M 0010583 Revision 4)
November 1, 2002 - Revised Manual (Manual edited to B/M 0010583 Revision 8)
March 6, 2003 - Revised Manual (Manual edited to B/M 0010583 Revision 10)
October 6, 2003 - Revised Manual (Manual edited to B/M 0010583 Revision 19)
May 14, 2004 - Revised Manual (Manual edited to B/M 0010583 Revision 27)
September 1, 2004 - Revised Manual (Manual edited to B/M 0010583 Revision 29)
January 24, 2005 - Revised Manual (Manual edited to B/M 0010583 Revision 32)
December 13, 2005 - Revised Manual (Manual edited to B/M 0010583 Revision 43)
April 27, 2006 - Revised Manual (Manual edited to B/M 0010583 Revision 45)
November 14, 2006 - Revised Manual (Manual edited to B/M 0010583 Revision 47)
April 15, 2007 - Revised Manual (Manual edited to B/M 0010583 Revision 51)
August 1, 2007 - Revised Manual (Manual edited to B/M 0010583 Revision 51)
November 30, 2007 - Revised Manual (Manual edited to B/M 0010583 Revision 52)
January 31, 2008 - Revised Manual (Manual edited to B/M 0010583 Revision 55)
October 15, 2008 - Revised Manual (Manual edited to B/M 0010583 Revision 55)
January 1, 2009 - Revised Manual
June 1, 2009 - Revised Manual
October 1, 2010 - Revised Manual
June 16, 2011 - Revised Manual
September 22, 2011 - Revised Manual
February 14, 2012 - Revised Manual
June 27, 2012 - Revised Manual
September 7, 2012 - Revised Manual
January 21, 2013 - Revised Manual
April 30, 2013 - Revised Manual
July 22, 2013 - Revised Manual
October 14, 2013 - Revised Manual
February 7, 2014 - Revised Manual
3121836 3394RT & 4394RT A
REVISION LOG
B 3394RT & 4394RT 3121836
TABLE OF CONTENTS
FIGURE NO. TITLE PAGE NO.
SECTION 1 - FRAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1-1 AXLE AND STEERING INSTALLATION - 2WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-2 AXLE AND STEERING INSTALLATION - 4WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1-3 TIRE AND WHEEL DRIVE INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
1-4 DRIVE MOTOR/HUB ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
1-5 BEACON LIGHT AND 4WD VALVE INSTALLATIONS (FRAME MOUNTED) . . . . . . . . 1-16
1-6 LEVELING JACKS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
SECTION 2 - GROUND CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2-1 CONTROL VALVES INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 MAIN CONTROL VALVE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-3 ENGINE INSTALLATION (DEUTZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-4 GENERATOR INSTALLATION (DEUTZ ENGINE OPTIONS) . . . . . . . . . . . . . . . . . . . . 2-16
2-5 DRIVE PUMP SUB-ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2-6 2WD PISTON PUMP ASSEMBLY (SINGLE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2-7 4WD PISTON PUMP ASSEMBLY (TANDEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
2-8 GEAR PUMP ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2-9 AUXILIARY PUMP ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
2-10 TANKS, ALARM AND HORN INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
2-11 GROUND CONTROL BOX INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2-12 HOODS AND LADDERS INSTALLATIONS (PRIOR TO SN 0200116736) . . . . . . . . . . 2-46
2-13 HOODS AND LADDERS INSTALLATIONS (SN 0200116736 TO SN 0200191606) . . . 2-52
SECTION 3 - SCISSORS ARMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3-1 SCISSORS ARMS INSTALLATION (3394RT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-2 SCISSORS ARMS INSTALLATION (4394RT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-3 ARM GUARDS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
SECTION 4 - PLATFORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-1 PLATFORM ATTACH AND MODULE INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2 MANUAL SINGLE DECK EXTENSION AND PLATFORM ASSEMBLY . . . . . . . . . . . . . 4-4
4-3 MANUAL DUAL DECK EXTENSION AND PLATFORM ASSEMBLY . . . . . . . . . . . . . . . 4-8
4-4 POWER DECK EXTENSION AND PLATFORM ASSEMBLY . . . . . . . . . . . . . . . . . . . . . 4-12
4-5 RAILS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4-6 PLATFORM CONSOLE BOX ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4-7 DRIVE/STEER CONTROLLER ASSEMBLY (PRIOR TO SN 0200141441) . . . . . . . . . . 4-26
4-8 DRIVE/STEER CONTROLLER ASSEMBLY (SN 0200141441 TO SN 0200191606). . . 4-28
SECTION 5 - CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5-1 AXLE LOCKOUT CYLINDER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-2 LEVEL JACK CYLINDER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5-3 LIFT CYLINDER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5-4 PLATFORM EXTENSION CYLINDER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5-5 STEER CYLINDER ASSEMBLY (PRIOR TO SN 0200137518) . . . . . . . . . . . . . . . . . . . 5-12
5-6 STEER CYLINDER ASSEMBLY (SN 0200137518 TO SN 0200191606). . . . . . . . . . . . 5-14
3121836 3394RT & 4394RT i
TABLE OF CONTENTS
FIGURE NO. TITLE PAGE NO.
SECTION 6 - HYDRAULIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6-1 STANDARD HYDRAULIC DIAGRAM (2WD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-2 STANDARD HYDRAULIC DIAGRAM (4WD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-3 LEVELING JACK HYDRAULIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6-4 HYDRAULIC DIAGRAM LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
SECTION 7 - ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7-1 ELECTRICAL COMPONENTS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
SECTION 8 - DECALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-1 DECAL INSTALLATION (PRIOR TO SN 0200150260). . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8-2 DECAL INSTALLATION (SN 0200150260 TO SN 0200191606) . . . . . . . . . . . . . . . . . . 8-6
SECTION 9 - RECOMMENDED SERVICE PARTS STOCK . . . . . . . . . . . . . . . . . . . . . . . . .9-1
SECTION 10 - SPECIAL OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
SECTION 11 - PART NUMBER INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
ii 3394RT & 4394RT 3121836
SECTION 1
FRAME
3121836 3394RT & 4394RT 1-1
SECTION 1 FRAME
12
6
10
12313
8
7
11
6
103
101
18B
110
102
111
109
116
114
114
117
107
113
107
112
108
18A
18
113
16
19
9
14
4
1
115
118
18B
104
101
18A
18A
105
106
201
202
203
204
206
205
207
207
207
208
209
210
210

FIGURE 1-1. AXLE AND STEERING INSTALLATION - 2WD

1-2 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-1. AXLE AND STEERING INSTALLATION - 2WD
ITEM # PART NUMBER QTY. DESCRIPTION REV.
0271691 Ref OSCILLATING AXLE INSTALLATION D
1 0100011 AR Locking, Compound 2Not Used 3 0641609 2 Bolt 3/8-16NC x 1-1/8 4 0642012 1 Bolt 5/8-11NC x 1-1/2 5Not Used 6 1684145 2 Oscillating Axle Cylinder Assembly (See CYLINDER SECTION for
Breakdown) 7 2130406 4 Fitting, 90 8 3311605 2 Locknut 3/8-16NC 9 3422592 1 Pin, Axle Pivot
10 3422745 2 Pin, Cylinder (Top) 11 3422899 2 Pin, Cylinder (Bottom) 12 3760115 4 Ring, Retaining 13 3841143 2 Keeper, Pin 14 3841258 1 Keeper, Pin 15 Not Used 16 4740158 1 Washer, Thrust 17 Not Used
18 0272212 1 Axle Weldment 18A 0561300 4 Block, Cylinder 18B 0961950 2 Bushing
19 4740541 2 Washer, Thrust
0271620 Ref STEERING INSTALLATION - 2WD FRONT E
101 0100011 AR Locking, Compound 102 0440162 2 Bearing, Thrust 103 0641606 4 Bolt 3/8-16NC x 3/4 104 4 Bolt Options:
0681828 1/2-13NC x 3-1/2 (Grade 8) (Prior to SN 0200113943) 0641824 1/2-13NC x 3 (SN 0200113943 to SN 0200191606)
105 1 Steer Cylinder Assembly Options (See CYLINDER SECTION for
Breakdown):
Use 1684412 Prior to SN 0200137518 (was p/n 1683614)
1684412 SN 0200137518 to SN 0200191606 106 2780230 2 Hub/Spindle Assembly (See Items 201 to 210 for Breakdown) 107 3312008 4 Nut 5/8-11NC 108 3322201 2 Nut 3/4-16NC 109 3323003 2 Nut, Slotted 1-1/4-12NC 110 3422692 2 Kingpin 111 3450808 2 Pin, Cotter 1/4 x 2 112 3841367 2 Rod-End with Grease Fitting 113 3841442 2 Rod-End 114 3900109 4 Screw, Shoulder 115 4061048 1 Shield, Cylinder (Prior to SN 0200113943) 116 4713000 2 Flatwasher 1-1/4 Narrow 117 4740086 2 Washer, Thrust
3121836 3394RT & 4394RT 1-3
SECTION 1 FRAME
FIGURE 1-1. AXLE AND STEERING INSTALLATION - 2WD (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
118 4891800 4 Flatwasher, Hardened 1/2
2780230 Ref HUB/SPINDLE ASSEMBLY A
Ref Note: Quantities shown are for 1 assembly. Two Assemblies
are required per machine.
201 7020033 1 Cap, Dust 202 7020054 1 Nut, Slotted 203 7010642 1 Pin, Cotter 2 x 3/16 204 7020055 1 Washer 205 7020039 1 Bearing, Cone - Outer 206 7020042 9 Lugnut 207 7020035 1 Hub (Includes Inner and Outer Bearing Cups) 208 7020037 1 Bearing, Cone - Inner 209 7020040 1 Seal 210 7020034 1 Spindle
2360571 Ref FRAME WELDMENT
1-4 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-1. AXLE AND STEERING INSTALLATION - 2WD (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
3121836 3394RT & 4394RT 1-5
SECTION 1 FRAME
12
6
6
10
12313
8
7
11
103
101
101
101
101
103
110
110
115
18D
102
18C 119 102
112
112
108
108
106
116
118
18A
18A
18A
111
109
107
113
117
104
4
1
14
9
18B
18B
118
114
18
2001619

FIGURE 1-2. AXLE AND STEERING INSTALLATION - 4WD

1-6 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-2. AXLE AND STEERING INSTALLATION - 4WD
ITEM # PART NUMBER QTY. DESCRIPTION REV.
0271509 Ref OSCILLATING AXLE INSTALLATION E
1 0100011 AR Locking, Compound 2Not Used 3 0641609 2 Bolt 3/8-16NC x 1-1/8 4 0642012 1 Bolt 5/8-11NC x 1-1/2 5Not Used 6 1684145 1 Oscillating Axle Cylinder Assembly (See CYLINDER SECTION for
Breakdown) 7 2130406 4 Fitting, 90 8 3311605 2 Locknut 3/8-16NC 9 3422592 1 Pin, Axle Pivot
10 3422745 2 Pin, Cylinder (Top) 11 3422899 2 Pin, Cylinder (Bottom) 12 3760115 4 Ring, Retaining 13 3841143 2 Keeper, Pin 14 3841258 1 Keeper, Pin 15 Not Used 16 4740158 1 Washer, Thrust 17 Not Used 18 0271790 1 Axle Weldment
Note: If kingpin holes in axle measure 1.503 diameter or
larger in any direction, axle weldment must be replaced
18A 0561300 4 Block, Cylinder 18B 0961950 2 Bushing 18C 2 Bearing Options:
0961951 Prior to SN 0200122967 (Note: See Kit) 0440274 SN 0200122967 to SN 0200191606
18D 2 Bearing Options:
0961951 Prior to SN 0200122967 (Note: See Kit) 0440291 SN 0200122967 to SN 0200191606
19 4740541 2 Washer, Thrust
C
0271507 Ref STEERING INSTALLATION - 4WD FRONT I
101 0100011 AR Locking, Compound 102 AR Thrustwasher Options:
0440161 4 Prior to SN 0200122967 (Top & Bottom Kingpin Locations)
(Note: See Kit)
4740537 AR SN 0200122967 to SN 0200191606 (.0625) (Top Kingpin
Location)
4740538 AR SN 0200122967 to SN 0200191606 (.125) (Top Kingpin
Location)
4740539 AR SN 0200122967 to SN 0200191606 (.188) (Top Kingpin
Location)
4740540 AR SN 0200122967 to SN 0200191606 (.250) (Top Kingpin
Location)
0440271 AR SN 0200122967 to SN 0200191606 (.250) (Bottom Kingpin
Location)
3121836 3394RT & 4394RT 1-7
SECTION 1 FRAME
FIGURE 1-2. AXLE AND STEERING INSTALLATION - 4WD (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
103 0641606 AR Bolt 3/8-16NC x 3/4
8 Prior to SN 0200122967
16 SN 0200122967 to SN 0200191606
104 4 Bolt Options:
0681828 1/2-13NC x 3-1/2 (Grade 8) (Prior to SN 0200113943)
0641824 1/2-13NC x 3 (SN 0200113943 to SN 0200191606) 105 Not Used 106 0962140 2 Bearing 107 1 Steer Cylinder Assembly Options (See CYLINDER SECTION for
Breakdown):
Use 1684412 Prior to SN 0200137518 (was p/n 1683614)
1684412 SN 0200137518 to SN 0200191606 108 3312008 4 Nut 5/8-11NC 109 3322201 2 Nut 3/4-16NC 110 4 Kingpin Options:
3422716 Prior to SN 0200122967 (2 Mounting Bolts) (Note: See Kit)
3423081 SN 0200122967 to SN 0200191606 (4 Mounting Bolts) 111 3841367 2 Rod-End with Grease Fitting 112 3900109 4 Screw, Shoulder 113 4061048 1 Shield, Cylinder (Prior to SN 0200113943) 114 1 Spindle (Left Side)
Use 4130403 Prior to SN 0200122967 (Note: See Kit) (was p/n 4130368)
4130403 SN 0200122967 to SN 0200191606 115 1 Spindle (Right Side)
Use 4130404 Prior to SN 0200122967 (Note: See Kit) (was p/n 4130369)
4130404 SN 0200122967 to SN 0200191606 116 4740086 4 Washer, Thrust 117 4891800 4 Flatwasher, Hardened 1/2 118 4846070 2 Rod-End 119 3780182 2 O-Ring (SN 0200122967 to SN 0200191606 Only) (Bottom King-
pin Location Only)
120 to 123 Not Used
124 3020029 AR Grease, Bearing (Not Shown)
— — — — — — — — — —
200 2902400 1 Kingpin and Bushings Update Kit for Machines Built Prior to
SN 0200122967 (Includes Newer “SN 0200122967 to SN 0200191606 Design Items 18C,18D,102,103,110 & 119).
See Field Service Bulletin AWP-04-11. Note: Newer bushings will fit in “Prior to SN 0200122967 axles however if kingpin holes measure 1.503 diameter or larger in any direction, axle weldment must be replaced before installation of kit. Note: Spindles require drilling and tapping for 8 additional kingpin mounting bolts. Newer design kingpins require 4 mounting bolts each.
2360571 Ref FRAME WELDMENT
1-8 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-2. AXLE AND STEERING INSTALLATION - 4WD (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
3121836 3394RT & 4394RT 1-9
SECTION 1 FRAME
7
8
9
9
6
5
1 2
3
4
101
103
102

FIGURE 1-3.TIRE AND WHEEL DRIVE INSTALLATIONS

1-10 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-3. TIRE AND WHEEL DRIVE INSTALLATIONS
ITEM # PART NUMBER QTY. DESCRIPTION REV.
Ref WHEEL DRIVE INSTALLATIONS 0271695 Ref 2WD D 0271508 Ref 4WD E
Ref Note: Quantities are per axle.
1 0100019 AR Locking, Compound 2 0682012 12 Bolt 5/8-11NC x 1-1/2 3 2 Drive Motor/Hub Assembly Options (See DRIVE MOTOR/HUB
ASSEMBLY for Breakdown): 2780263 2WD 2780262 4WD
4 3300106 18 Lugnut 5 4892000 12 Washer, Hardened 6 0641610 4 Bolt 3/8-16NC x 1-1/4 7 1671056 2 Cover, Rear Axle 8 3311605 4 Locknut 3/8-16NC 9 4711600 8 Flatwasher 3/8 Narrow
Ref TIRE AND WHEEL INSTALLATIONS 0270092 Ref 12 x 16.5 Foam-Filled Lug Tire A 0270653 Ref 12 x 16.5 Foam-Filled Non-Marking Tires A 0271719 Ref 33/16LL x 16.5 Foam-Filled Lug Tire A 0270076 2 12 x 16.5 Foam-Filled Right Side Lug Tire A 0270077 2 12 x 16.5 Foam-Filled Left Side Lug Tire A 0270654 2 12 x 16.5 Foam-Filled Right Side Non-Marking Tire A 0270655 2 12 x 16.5 Foam-Filled Left Side Non-Marking Tire A 0258011 2 33/16LL x 16.5 Foam-Filled Right Side Lug Tire D 0258012 2 33/16LL x 16.5 Foam-Filled Left Side Lug Tire D
Ref Note: Assemblies may require ballast/foam filling to
manufacturer’s specifications prior to installing on a machine. Refer to Operation & Safety or Service & Maintenance Manuals. Purchase individual tire and/or rim only if able to foam fill tire & wheel assembly, otherwise, purchase complete assembly,
102 1 Tire Options:
4520216 12 x 16.5 NHS Lug Tire 4520240 12 x 16.5 OTR NHS Non-Marking Tire 4520217 33/16LL x 16.5 Lug Tire
103 1 Valve, Air Options:
8786514 With 0258011 & 0258012 Tire/Wheel Assemblies 4640113 All Tire/Wheel Assemblies except 025811 & 0258012
104 1 Rim, Wheel
4860213 16.5 x 9.75 (Use with 12 x 16.5 Lug Tires) 4860179 16.5 x 12 (Use with 33/16LL x 16.5 Lug Tires)
3121836 3394RT & 4394RT 1-11
SECTION 1 FRAME
120 60 55 44 88 224 1 11 15 17 2 34
10
14
5
56
53
51
54
52
43
49
16
8
21
22
337330294619231220
27 28
301
302A
302B
303
304
305

FIGURE 1-4. DRIVE MOTOR/HUB ASSEMBLY

1-12 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-4. DRIVE MOTOR/HUB ASSEMBLY
ITEM # PART NUMBER QTY. DESCRIPTION REV.
Ref DRIVE MOTOR/HUB ASSEMBLY 2780263 Ref 2WD B 2780262 Ref 4WD B
Ref Note: Unless there is capability to torque shaft (item 4) to 626
ft/lbs. (850Nm) Repair beyond this level is NOT advised.
1 Use 7022544 4 Gear, Planet 2 See Note 3 Gear, Planet (Note: Use Item 302A or 302B) 3 7021325 1 Gear, Sun 4 Use 7024047 1 Nut, Shaft
Ref Note: Unless there is capability to torque shaft nut (item 4) to
626 ft/lbs. (850Nm) Repair beyond this level is NOT advised.
5 7021326 3 Pin, Planet 6 7021327 1 Ring, Support 7 7021328 1 Carrier, Planet 8 Use 7021329 1 Cover
9Not Used 10 See Note 3 Bearing, Roller (Note: Use Item 302A or 302B) 11 Use 7022544 4 Bearing, Roller 12 Use 7024047 2 Bearing, Tapered Roller 13 Not Used 14 See Note 3 Ring, Retaining (Note: Use Item 302A or 302B) 15 Use 7022544 4 Ring, Retaining 16 7021341 1 Ring, Retaining 17 See Note 3 Disk, Support (Note: Use Item 302A or 302B) 18 Not Used 19 Use 7024047 1 O-Ring 20 Use 7024047 1 Seal, Shaft 21 Use 7021329 3 Plug, screw 22 7024048 3 Ring, Seal 23 Use 7024047 3 Bolt
24 to 26 Not Used
27 70002303 1 O-Ring 28 70002304 1 Seal 29 7024049 1 Washer, Thrust 30 1 Gear, Ring Options:
7021335 2WD 7021346 4WD
31 to 32 Not Used
33 See Note 1 O-Ring (Note: Use Item 303 or 304) 34 Use 7021329 1 Ring, Retaining
35 to 42 Not Used
43 1 Shaft, Sun Gear Options:
7021336 2WD 7021347 4WD
44 7024050 1 Shaft, Input
45 to 48 Not Used
49 7024051 1 Washer, Thrust 50 Not Used
3121836 3394RT & 4394RT 1-13
SECTION 1 FRAME
FIGURE 1-4. DRIVE MOTOR/HUB ASSEMBLY (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
51 See Note 1 Cover (Note: Use Item 304 or 305) 52 Use 7021329 1 Sleeve 53 See Note 2 Bolt (Note: Use Item 304 or 305) 54 See Note 1 O-Ring (Note: Use Item 304 or 305) 55 7024053 1 Spring 56 Use 7024054 1 Rod, Shift
57 to 59 Not Used
60 Not Available 1 Housing, Brake
61 to 87 Not Used
88 7021344 9 Stud, Wheel
89 to 99 Not Used
100 7022552 9 Cap, Seal
101 to 119 Not Used
120 7024055 1 Motor, Hydraulic
121 to 223 Not Used
224 Use 7024047 2 Dowel, Spring Sleeve
Ref REPAIR KIT OPTIONS
301 7022544 1 Planet Gear Kit (Includes Items 1,11,15)
302 1 Planet Gear Kit Options: (Includes Items 2,10, 14,17) 302A 7024027 2WD 302B 7022545 4WD
303 7024047 1 Bearing Kit (Includes Items 4,12,19,20,23,33, 224)
Ref Note: Unless there is capability to torque shaft nut (item 4) to
626 ft/lbs. (850Nm) Repair beyond this level is NOT advised.
304 7021329 1 Cover Kit (Includes Items 8,21,22,33,34,51,52,53,54)
305 7024054 1 Mechanical Disconnect Kit (Includes 51,53,54, 56)
1-14 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-4. DRIVE MOTOR/HUB ASSEMBLY (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
3121836 3394RT & 4394RT 1-15
SECTION 1 FRAME
7
4
REAR
FRONT
201
202
202
203
202
205
204
1
6
202
202
205
202
101
105
102
104
103
102
102
1
6
104
102
105
303
301
304

FIGURE 1-5. BEACON LIGHT AND 4WD VALVE INSTALLATIONS (FRAME MOUNTED)

1-16 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-5. BEACON LIGHT AND 4WD VALVE INSTALLATIONS (FRAME MOUNTED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
0271779 Ref 4WD VALVE INSTALLATIONS (FRAME MOUNTED) C
1 0641606 8 Bolt 3/8-16NC x 3/4
2 to 3 Not Used
4 4641225 1 Valve Assembly - 4WD Rear Axle (See Items 101 to 105 for
Breakdown) 5Not Used 6 4761600 2 Lockwasher 3/8 7 4641220 1 Valve Assembly - 4WD Front Axle (See Items 201 to 205 for
Breakdown)
4641225 Ref VALVE ASSEMBLY - REAR AXLE (4WD) C
101 Not Available 1 Block, Manifold 102 2110404 6 Fitting, Straight 103 2111010 1 Fitting, Straight 104 2151010 2 Fitting, 45 105 Not Available 3 Orifice
4641220 Ref VALVE ASSEMBLY - FRONT AXLE (4WD) C
201 Not Available 1 Block, Manifold 202 2110404 8 Fitting, Straight 203 2111010 1 Fitting, Straight 204 2130404 4 Fitting, 90 205 2131010 2 Fitting, 90
0271746 Ref BEACON LIGHT INSTALLATION A
301 0721004 2 Screw #10-24NC x 1/2 302 2820018 2in/8cm Heat-Shrink (Not Shown) 303 2920146 1 Beacon Light Assembly
7016319 1 Bulb, Replacement
7016372 1 Lens, Replacement 304 3311005 2 Locknut #10-24NC 305 4922739 1 Harness, Beacon Light (Not Shown - See ELECTRICAL
SECTION for Breakdown)
3121836 3394RT & 4394RT 1-17
SECTION 1 FRAME
8
4
20
102
101
107
108
112
103
106
104
110
15
16
23
11
19
12
7
26
26
14
10
6
22
22
13
24
25
111
252 220
18
2
4
20
20
4
113
28
8
SN 0200139319
TO PRESENT
PRIOR TO
SN 0200139319
1
1

FIGURE 1-6. LEVELING JACKS INSTALLATION

1-18 3394RT & 4394RT 3121836
SECTION 1 FRAME
FIGURE 1-6. LEVELING JACKS INSTALLATION
ITEM # PART NUMBER QTY. DESCRIPTION REV.
Ref LEVELING JACKS INSTALLATIONS: 0271776 Ref Prior to SN 0200139319 F 0274623 Ref SN 0200139319 to SN 0200191606 B
1 0100011 AR Locking, Compound (Not Shown) 2 2 Leveling Jack Assembly Options (See Items 101-113 for
Breakdown): 0272261 Prior to SN 0200139319 0274622 SN 0200139319 to SN 0200191606
3 0272278 1 Directional Valve Assembly (Not Shown - See GROUND
CONTROLS SECTION for Breakdown)
4 AR Bolt Options:
0641406 8 Bolt 1/4-20NC x 3/4 (Prior to SN 0200139319) 0641407 16 Bolt 1/4-20NC x 7/8 (SN 0200139319 to SN 0200191606)
5Not Used 6 0641811 8 Bolt 1/2-13NC x 1-3/8 7 0682226 16 Bolt 3/4-10NC x 3-1/4 8 4 Cover Options:
1671071 4 Prior to SN 0200139319 1671165 4 SN 0200139319 to SN 0200191606
9Not Used 10 3272205 16 Locknut 3/4-10NC 11 3310805 8 Locknut #8-32NC 12 3311405 8 Locknut 1/4-20NC (Prior to SN 0200139319) 13 3311805 8 Locknut 1/2-13NC 14 3573658 4 Plate 15 3930820 8 Capscrew #8-32NC 16 4 Switch, Limit Options:
4360548 Prior to SN 0200115380
See Note SN 0200115380 to SN 0200191606 (Note: See
ELECTRICAL SECTION)
17 Not Used 18 AR Tape, Safety Options:
4420052 3ft/1m Prior to SN 0200139319 4420052 8ft/2.4m SN 0200139319 to SN 0200149813
4420051 8ft/2.4m SN 0200149813 to SN 0200191606 19 4460968 4 Connector, Strain Relief (Prior to SN 0200115380) 20 4711400 AR Flatwasher 1/4 Narrow 21 Not Used 22 4711800 16 Flatwasher 1/2 Narrow 23 4750800 8 Flatwasher #8 Thick 24 4846620 2 Support (Front Right/Rear Left) 25 4846621 2 Support (Front Left/Rear Right) 26 4892200 32 Washer, Hardened 3/4 27 4922748 1 Harness, Leveling Jack (See ELECTRICAL SECTION for
Breakdown)
28 3300353 16 Nut, Tinnerman (SN 0200139319 to SN 0200191606)
3121836 3394RT & 4394RT 1-19
SECTION 1 FRAME
FIGURE 1-6. LEVELING JACKS INSTALLATION (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
Ref LEVELING JACK ASSEMBLIES: 0272261 Ref Prior to SN 0200139319 C 0274622 Ref SN 0200139319 to SN 0200191606 A
Ref Note: Qty shown is for one Level Jack Assembly. Two
assemblies required per machine.
101 0641824 8 Bolt 1/2-13NC x 3 102 2 Jack Cylinder Assembly Options (See CYLINDER SECTION for
Breakdown): 1684220 Prior to SN 0200139319 1684406 SN 0200139319 to SN 0200191606
103 2110606 2 Fitting, Straight 104 2220883 2 Plug 105 3311805 8 Locknut 1/2-13NC 106 3760348 2 Ring, Retaining 107 3841564 2 Rod 108 4160116 2 Spring 109 4360518 2 Transducer, Pressure 110 4641238 2 Cartridge, Solenoid Valve
7024502 2 Seal Kit - 4641238 Valve (1 Per Cartridge) 7024501 2 Coil (1 Per Cartridge) 7024506 2 Coil Nut Kit (1 Per Cartridge)
111 1 Mount, Leveling Jack Options:
4846619 Prior to SN 0200139319 4210028 SN 0200139319 to SN 0200191606
112 2110808 2 Fitting, Straight 113 0903054 2 Bracket, Jack Cover (SN 0200139319 to SN 0200191606)
0010583 Ref DECALS INSTALLATION
201 to 219 Not Used
220 4 Decal - Outrigger Warning Options:
1701214 ANSI Spec (English) 1704690 CSA Spec (English/French) 1704698 Brazilian Spec (Spanish/Portuguese) 1704697 Latin American Spec (English/Spanish)
221 to 251 Not Used
252 1705042 4 Decal - Maximum Load
1-20 3394RT & 4394RT 3121836
SECTION 2
GROUND CONTROLS
3121836 3394RT & 4394RT 2-1
SECTION 2 GROUND CONTROLS
TANK SIDE
3
8
2
5
ENGINE SIDE
OR
4B
4A
1
5
101
102
104
104
107
106
105
203
202
204
204
201
202
301
305
321
531
518
502 504
303
404
401
404C
404A
404D
404B
402
402
503 530 516
519
602

FIGURE 2-1. CONTROL VALVES INSTALLATION

2-2 3394RT & 4394RT 3121836
SECTION 2 GROUND CONTROLS
FIGURE 2-1. CONTROL VALVES INSTALLATION
ITEM # PART NUMBER QTY. DESCRIPTION REV.
Ref CONTROL VALVE INSTALLATION 0271778 Ref 2WD B 0271779 Ref 4WD C
1 0641606 4 Bolt 3/8-16NC x 3/4 2 0641624 3 Bolt 3/8-16NC x 3 3 4641211 1 Valve Assembly - Main (See MAIN CONTROL VALVE
ASSEMBLY for Breakdown)
4 1 Valve Assembly - Drive Header Options: 4A 4641228 2WD (See Items 101-106 for Breakdown) 4B 4641227 4WD (See Items 201-204 for Breakdown)
5 4761600 7 Lockwasher 3/8
6 to 7 Not Used
8 4568114 3 Spacer, Tube
4641228 Ref VALVE ASSEMBLY - DRIVE HEADER (2WD) C
101 Not Available 1 Block, Manifold 102 2111212 2 Fitting, Straight 103 Not Used 104 2130808 4 Fitting, 90 105 7026010 1 Cartridge
70002519 1 Seal Kit - 7026010 Cartridge
106 7018905 1 Plug, O-Ring
7022523 1 Orifice
107 7026012 2 Cartridge
7011346 2 Seal Kit - 7026012 Cartridge
4641227 Ref VALVE ASSEMBLY - DRIVE HEADER (4WD) C
201 Not Available 1 Block, Manifold 202 2110808 4 Fitting, Straight 203 2111212 4 Fitting, Straight 204 2130808 4 Fitting, 90
Ref LEVELING JACK VALVE INSTALLATION B 0271776 Ref Prior to SN 0200139319 0274623 Ref SN 0200139319 to SN 0200191606
301 0100011 AR Locking, Compound 302 Not Used 303 0272278 1 Leveling Jack Valve Assembly (See Items 401-403 for
Breakdown) 304 Not Used 305 0641508 3 Bolt 5/16-18NC x 1
306 to 320 Not Used
321 4711500 3 Flatwasher 5/16 Narrow
3121836 3394RT & 4394RT 2-3
SECTION 2 GROUND CONTROLS
FIGURE 2-1. CONTROL VALVES INSTALLATION (CONTINUED)
ITEM # PART NUMBER QTY. DESCRIPTION REV.
0272278 Ref LEVELING JACK VALVE SUB-ASSEMBLY C
401 2110606 4 Fitting, Straight 402 2110808 6 Fitting, Straight 403 Not Used 404 4641240 1 Valve Assembly
404A 7024497 1 Cartridge without Coil (Retract)
7024502 1 Seal Kit - 7024497 Cartridge 7024501 1 Coil 7024506 1 Coil Nut Kit
404B 7024498 1 Cartridge without Coil (Extend)
7024503 1 Seal Kit - 7024498 Cartridge 7024501 1 Coil 7024507 1 Coil Nut Kit
404C 7024499 1 Cartridge
7024504 1 Seal Kit - 7024499 Cartridge
404D 7024500 1 Cartridge without Coil
7024505 1 Seal Kit - 7024500 Cartridge 7024501 1 Coil 7024506 1 Coil Nut Kit
Ref POWER DECK EXTENSION AUXILIARY PUMP INSTALLATION 0271701 Ref 3394RT with Single Deck Extension E 0271705 Ref 3394RT with Dual Deck Extension E 0271702 Ref 4394RT with Single Deck Extension E 0271706 Ref 4394RT with Dual Deck Extension E
501 Not Used 502 0100011 AR Locking, Compound 503 0641405 2 Bolt 1/4-20NC x 5/8 504 0641608 2 Bolt 3/8-16NC x 1
505 to 515 Not Used
516 3311405 2 Locknut 1/4-20NC 517 Not Used 518 1 Auxiliary Power Pump Assembly Options (see AUXILIARY
PUMP ASSEMBLY for Breakdown):
Use 3600468 1 Prior to SN 0200164133 (was p/n 3600208)
3600468 1 SN 0200164133 to SN 0200191606
519 3740067 1 Relay
520 to 529 Not Used
530 4751400 4 Flatwasher 1/4 Wide 531 4751600 2 Flatwasher 3/8 Wide
2-4 3394RT & 4394RT 3121836
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