2004/12/13 Caterpillar

Improved Belts and Pulleys are Now Used {1205, 1357, 1425}

Usage:

Track-Type Tractor: D7R Series II (S/N: AEC1-UP; ABJ1-UP; ACS1-UP; ADW1-UP; AGN1-UP; AFG1-UP; BRP1-UP; BNM1-UP; BRN1-UP; BNX1-UP; BPT1-UP; BPK1-UP)

Description of Change: New belts, a new crankshaft pulley, a new alternator bracket, and a new alternator pulley are now used to increase service life of the belts on the D7R Series II Track-Type Tractor. If you are experiencing low belt life, check your machine for the latest parts. New software is also used to provide low idle charging capabilities. Refer to the Tables 1 and 2 for the correct parts for your machine.

Adaptable To: The new belts and pulleys are adaptable to D7R Series II Track-Type Tractors. If your machine matches one of the serial numbers in the list below, refer to Table 1.

ABJ1-565
AGN1-614
AEC1-681
AFG1-524
ADW1-524
ACS1-589
BRP1-699,701-707,712
BNM1-515
BRN1-519
BNX1-701,703
BPT1-514
BPK1-512

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Table 1
First Production Versus Current Production
Part Name	Old Part Number	New Part Number
Crankshaft Pulley	185-7541	233-9163
Alternator Pulley	2W-8494	245-3702
Alternator Bracket	197-7102 (03)	197-7102 (05)
Banded V-Belt Set	198-6750	251-7496 ⁽¹⁾
V-Belt Set	7M-4720	251-7493 ⁽²⁾
V-Belt Set	233-6316	251-7495 ⁽³⁾
Alternator (100 Amp)	200-8277	197-8820 ⁽⁴⁾
Alternator (100 Amp)	204-7449	197-8820 ⁽⁵⁾
Engine Software		244-2283 Engine Ratings Electronic Software ⁽⁶⁾

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^( 1 )	Use this banded belt for 8 blade Flexxaire fan and for the Ejector fan.
^( 2 )	Use this belt for the Standard fan speed and for the Reversible fan.
^( 3 )	Use this belt with Fan Speed Increase.
^( 4 )	Part is required to provide low idle charging capabilities. See Service Magazine, SEPD0653, "A New Alternator Has Improved Durability".
^( 5 )	Part is required to provide low idle charging capabilities in applications with high debris. See Service Magazine, SEPD0756, "An Improved Alternator for Applications with Derbis is Now Available".
^( 6 )	Part is required to provide low idle charging capabilities. See Service Magazine, SEPD0763, "New Software is Now Used to Ensure Charging at Low Engine Speed".

If the machine has one of the serial numbers below, refer to Table 2.

ABJ566-597
AGN615-770
AEC682-822
AFG525-528
ADW525-531
ACS590-620
BRP700,708-711,713-UP
BNM516-UP
BRN520-UP
BNX702,704-UP
BPT515-UP
BPK513-UP

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Table 2
Running Changes Versus Current Production
Part Name	Old Part Number	New Part Number
Alternator Pulley	235-6388	245-3702
Banded V-Belt Set	198-6750	251-7496 ⁽¹⁾
Banded V-Belt Set	236-4189	252-9028 ⁽²⁾
V-Belt Set	7M-4720	251-7493 ⁽³⁾
V-Belt Set	233-6316	251-7495 ⁽⁴⁾
Alternator (100 Amp)	204-7449	197-8820 ⁽⁵⁾
Engine Software	-	244-2283 Engine Ratings Electronic Software ⁽⁶⁾

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^( 1 )	Use this belt set with the 8 blade Flexxaire fan and the ejector fan.
^( 2 )	Part is used on the 12 blade Flexxaire fan.
^( 3 )	Use this belt for the Standard fan speed and for the Reversible fan.
^( 4 )	Use with the Fan Speed Increse arrangement
^( 5 )	Part is required to provide low idle charging capabilities in applications with high debris. See Service Magazine, SEPD0756, "An Improved Alternator for Applications with Debris is Now Available".
^( 6 )	Part is required to provide low idle charging capabilities. See Service Magazine, SEPD0763, "New Software is Now Used to Ensure Charging at Low Speed".

Parts that are used on current production are shown in the column of New Part Numbers. A new alternator pulley is now used. The machine may be equipped with a standard alternator or a sealed alternator. Either alternator will provide adequate low idle charging with the new alternator pulley. The machine may be equipped with a Shielded 204-7449 Alternator. The shielded alternator must be exchanged for a 197-8820 Alternator Gp in order to ensure battery charging at low speed. Refer to the Service Magazine, SEPD0756, "An Improved Alternator for Applications With Debris is Now Available" for this procedure. The machine may also be equipped with a 200-8277 Alternator Gp. You must change to a 197-8820 Alternator Gp in order to ensure battery charging at low speed. Refer to the Service Magazine, SEPD0653, "A New Alternator Has Greater Durability" for this procedure. A new alternator bracket is used. Both the new alternator bracket and the old alternator bracket have the same part number. The new version has the engineering change (5) on the bracket. New software will enable elevated idle of 1100 rpm. See Service Magazine, SEPD0763, "New Software is Now Used to Ensure Charging at Low Engine Speed".

In cases of near acceptable belt life, it may be advisable to try all the current parts except the new crankshaft pulley. If the machine is equipped with banded belts, using the new crankshaft pulley and all other current parts is required.