An Assembly Improvement Has Been Made to Increase Bolt Retention and Reliability of the Output Transfer Gear Differential Group on Certain Articulated Trucks {3159} Caterpillar

Articulated Truck

735C (S/N: LFJ1-254; TFJ1-242)

740 EJECTOR (S/N: 3F71-273; 3T71-166)

740C EJECTOR (S/N: LFN1-276; TFN1-178)

745 (S/N: 3F61-340; 3T61-251)

745C (S/N: LFK1-833; TFK1-1365)

Reference: Disassembly and Assembly, UENR4227, "Output Transfer Gears - Assemble"

Description Of Change: An assembly improvement has been made to increase bolt retention and reliability of the output transfer gear differential group is now used on the machines listed above. The new assembly improvement will reduce the risk of a bolt back out after rebuilds.

Adaptable To: The assembly improvement is adaptable to the machines within the listed serial numbers, and are effective in production with all the machines after the listed serial numbers.

Rework Procedure

Illustration 1	g06243703
Cutaway view of the output transfer gear (58) Bolt

Apply Loctite^® 263^TM or Loctite^® 270^TMRed Threadlocker to the threads of bolt (58) prior to installation.

Note: Replace any damaged components upon rebuild and assemble according to published assembly procedure.

Note: For additional assembly instructions of the output transfer gear, refer to Step 20 of Disassembly and Assembly, UENR4227, Output Transfer Gears - Assemble.