1992/10/12 Caterpillar


Improved Hour Meters (Electric){7450,7480}

Usage:


SUPPLEMENT: 12/12/94

Service Magazine; October 12,1992; "Improved Hour Meters (Electric)".

In the paragraph for Supplier B, disregard any reference to the label being colored white or yellow. Look at the date code on the label or stamped into the side of the case. Date codes that are 1782 (178th day of 92) or later have improved sealing.

--------------- END SUPPLEMENT ---------------

Description of Change: The electric hour meters have had problems with moisture entry when used in open ROPS applications. Suppliers have implemented changes to improve sealing.

Adaptable To: The changes will affect 6T7337 and 9G6762 Electric Hour Meters used in the various service groups with various harness adapters.

Supplier (A): Can be identified by date code stamped into the end (rear) of the plastic housing between the two mounting studs. The fix date is June 1, 1992 for supplier production. The date code is shown in NUMERAL KOD format and should read (06/01/92 = NUNLDM) or later.

Supplier (B): Can be identified by a paper label on the side of the housing. The original paper label color was white. The fix plastic label color is now yellow. The dated code will be stamped into the side of the plastic housing beginning with 1782 (178th day of '92). The code can be located on the side of the housing near the bezel.

Caterpillar Information System:

1992/10/05 Product Support Literature{0374}
1992/10/05 New Cylinder Head Groups Provides Lower Valve Guide Temperatures{1100,1104,1112,1123}
1992/10/05 Thicker Head Gaskets Available For Use With Resurfaced Cylinder Blocks{1124}
1992/09/28 New NEXG4516 Marine/Industrial Service Program Module(SPM) Available {1900,0782}
1992/09/28 Service Tools Available {0600,0700}
1992/09/28 New Self Locking Bolt Used On Engine Side Covers {1201}
1992/09/21 New Fuel Injection Pump Groups Have Larger Diameter Camshaft Bores, New Lifter Assembly, And Shorter Plunger And Barrel Assembly{1251,1253,1281,1292}
1992/09/21 New Plug And O-Ring Can Help Prevent Oil Leakage At The Flywheel Housing Gasket{1157,1307}
1992/09/21 Replacement Mechanical Temperature And Pressure Gauges (Indicators) Retained By Push-On Metal Retainers{7450}
1992/09/07 Major Engine Component Changes{1201,1202,1205,1218,1219,1230,1253,1288,1331}
1992/09/07 Governor Specifications Are Available Through The Technical Information System{1264,0374}
1992/08/31 Supplemental Coolant Additive Requirements{1352,1395,1063}
1992/10/26 Improved Windshield Wiper Motor Crank Assemblies Available For Parts Service{7305}
1992/10/26 3406 Truck Engine Component Update{1052,1119,1201,1202,1205,1214,1218,1254,1288,1803}
1992/11/09 Correct Identification Of Rocker Arm Assembly Components{1123}
1992/11/09 Relay Replacement Kits Available To Replace Relays In Engine Mounted Junction Box{1423,1422}
1992/11/09 Replacement Governors For Early Engines{1264}
1992/11/09 Improved Fuel Injection Line Assemblies And Clamps Used{1252}
1992/11/09 Oil Holes In Crankshaft Main And Rod Journals{1202}
1992/11/09 New Liner Seat Inserts Available{1217}
1992/11/09 New 690 Main Rotor Lamination For 3500 SR4 Power Generators{4457}
1992/11/16 New Connecting Rod Assembly Used{1218}
1992/11/16 New Spacer Plate Gasket Provides Improved Sealing Around Push Rod Compartment{1221}
1992/11/16 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence{1124,1221,1216}
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