154403-2200 ZEXEL 9 421 610 807 BOSCH COILED SPRING 9421610807 1544032200 1157236320

PROBLEM
The front suspension A-Frame bearing may not be receiving an adequate amount of grease on machines that are equipped with the factory fitted Automatic Lubrication System. An inadequate amount of grease supply to the bearing does not promote purging of grease through the joint, especially in severe applications. This may result in premature wear of the bearing.
A larger sized injector is available which increases the amount of grease that is supplied to the bearing
Note: This service letter covers machines with factory fitted Automatic Lubrication Systems only. Dealer installed Automatic Lubrications Systems are not covered.
AFFECTED PRODUCT
Model Identification Number
735B L4D00368, 372, 375-380, 384-403
T4P00253-00258, 268-271, 275-277, 280-282, 284-286, 290-292, 302, 304
740B L4E00374-00378, 380, 385, 390, 392-393, 401-403, 407-408, 411, 419, 429-430, 433-437, 440, 443-449, 451, 453-455, 459, 465, 469, 471, 478, 480, 489, 492, 505, 511, 517, 522-529, 533, 535, 543, 549-550, 558, 560, 563, 567, 570, 575-576, 584, 592, 609-610, 612-616, 622, 624-627, 633-634, 643, 666, 670-673, 679-682, 687-694, 701-702, 708, 710, 712, 715-716, 722, 726-728, 734-735, 738, 741-743, 745-746, 755-757, 760, 763, 768, 774, 777, 779, 784-785, 788-789, 792, 796-799, 802-803, 805, 810, 812-813, 816-817, 821-822, 826-828, 833, 837, 842, 851, 853, 857, 861, 865-867, 881-882, 885, 887, 890-891, 896, 900, 903-904, 909-910, 912-915, 917-919, 921, 924-925, 927, 932-933, 945-950, 955-957, 962-971, 976-980, 985
T4R00267-00273, 278, 282-283, 289, 294, 299-300, 309-310, 322-323, 327, 339, 342, 348, 352, 354, 356, 359-360, 362-369, 371, 376-377, 393, 406, 423, 427, 431-432, 450, 518, 539-540, 543-546, 550, 557, 568, 581-582, 587-590
740B EJ L4F00383-00388
T4S00272-00274, 276-279, 282, 289-290, 296-299, 301, 304-309, 311
PARTS NEEDED
Qty
Part Number Description
1 1926212 INJECTOR
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 16% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
ACTION REQUIRED
See attached rework procedure.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-8000 hrs,
0-48 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 0.5-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
(1). Remove the grease injector from the manifold that is located on the right side of the front chassis. See Image 1.1.1 for location.
(2). Install new 192-6212 Injector.
(3). Purge new injector by pressing the Test Switch on the Auto Lube pump. See Image 1.1.2 for test switch location.
(4). Install the grease line to the injector.
Image1.1.1
Image1.1.2