Case Magnum 7250 User Manual

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

Case Magnum 7250 Specifications

General

Brand	Case
Model	Magnum 7250
Category	Tractor
Language	English

Summary

Magnum Hitch Diagnostic Codes and Service Manual Update

General Information

Provides essential details for troubleshooting the Magnum hitch system.

General Hitch System Testing

Outlines procedures for initial testing of the hitch system's electrical and hydraulic functions.

Reading and Erasing Error Codes

Details the process for accessing and clearing diagnostic error codes from the hitch control module.

Hitch Performance Codes

Lists and explains diagnostic codes related to hitch performance during field operations.

7200 Series Hitch Calibration Procedure

Step-by-step guide for calibrating the hitch control system on 7200 series tractors.

Hitch Diagnostic Codes During Calibration

Explains diagnostic codes specific to the hitch calibration process.

Hitch Diagnostics by Problem

Provides troubleshooting guidance for common hitch operational problems.

Hitch Valve Components and Function

Describes the function and troubleshooting of key hitch valve components.

7200 Series Electronic Hitch Components

Lists part numbers for various electronic hitch system components.

Eliminating Draft Control

Instructions on how to disable draft control functionality on Magnum tractors.

Testing Rockshaft and Position Lever Potentiometers

Procedures for testing rockshaft and position lever potentiometers.

Bench Testing Rockshaft & Position Lever Potentiometers

Detailed steps for bench testing rockshaft and position lever potentiometers.

Testing Wiring Harness Connectors

Guides for testing wiring harness connections at 37-pin and 16-pin connectors.

Testing EDC Relay

Procedure to test the EDC relay on specific serial number tractors.

Testing Hitch Enable Relay

Instructions for testing the hitch enable relay.

Correction to Wiring Schematic

Details a correction for an incorrect wiring schematic in the service manual.