CASE
nir
Service
Bulletin
FILING INSTRUCTIONS
Binder: AG EQUIPMENT BINDER
Page: 1 of 26
Binder Section: AGRICULTURAL TRACTORS
Document No.: NTR SB 026 96
I
Mach
Loc
Code: 40000
Issued By:
PRODUCT MANAGEMENT,
RACINE,
WISCONSIN, USA
Family: Magnum
Model:
7210,7220,7230,7240,7250
Supersedes:
Date Issued: 1
1/20/96
Subject:
Magnum Hitch Diagnostic Codes and Service Manual Update
Background The following service bulletin will provide the dealer with more detailed troubleshooting
nformation on the Magnum 7200 series hitch system. The dealer should make a copy of this bulletin
and
place in section 4002 page 45 or section 8009 of the 7200 series Service Manual.
Note: The hitch calibration procedure is found in the 7200 series Service Manual section 8009
Of
Service Manual is no longer Correct.
Note:
The 7100 and 8900 series tractor require a different calibration procedure.
This
bulletin will cover the following items.
1.
General information
...............................................................................................
page
2
2.
General testing of the hitch system
........................................................................
Reading and erasing error codes
page
3
-
4
3.
...........................................................................
page
5
4.
Hitch performance codes (during field operations)
................................................. page
6
-
10
5.
7200 series hitch calibration procedure
.................................................................
page
11
-
12
6.
Hitch diagnostic codes (during calibration)
.............................................................
7.
Hitch diagnostics by problem..
page 13
-
14
........
....................................................................... page
15
-
16
8.
Hitch component function and troubleshooting
....................................................
- - page 17
-
18
9.
Hitch electrical component part numbers
...............................................................
page
19
10.. Eliminating load pins and draft control from the Magnum tractor
.........................
19
1
1. Testing rockshaft and position lever potentiometers
- - page
..............................................
20
12. Bench testing rockshaft and position lever potentiometers
page
....................................
20
13. Testing wiring harness at the 37 pin, 16 pin amp connector
page
.................................page 21
-
24
14.
Testing the EDC relay on tractors below serial number JJA0064978
....................
15. Testing hitch enable relay
page 25
.....................................................................................
page
25
16. Correction to wiring schematic found in section 4002 page 27
.............................page
26
SERVICE BULLETINS DO NOT CONSTITUTE WARRANTY AUTHORIZATION TO UPDATE UNITS
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