SEGMENT 1730949 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - BOLTS WHICH HOLD THE TRANSMISSION TO THE DIFFERENTIAL AND BEVEL GEAR GROUP NEED TO BE RETIGHTENED ON CER TAIN 773B TRUCKS - MAILED US AND CANADA, COFA, LIMITED COSA
  The information supplied in this service letter may not be valid after the termination date of this program.   Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
BOLTS WHICH HOLD THE TRANSMISSION TO THE DIFFERENTIAL AND BEVEL GEAR GROUP NEED TO BE RETIGHTENED ON CERTAIN 773B TRUCKS, 3006, PI3228 U-48 AU-22 O-20.1 priority COMPLETION DATE, Termination Date
September 30, 1987, March 31, 1988
Problem
The 4K4937 Bolts which hold the transmission to the differential and bevel gear group on certain 773B Trucks may have not been tightened to the correct torque.
Affected Product
Model Identification Number 773B 63W1848, 1849, 1851, 1853-1858, 1860-1866, 1868-1870, 1872-1877, 1880, 1882-1889, 1892, 1893, 1898-1905, 1907, 1909, 1912-1917
Parts Needed
none
Action Required
Tighten the twenty-four 4K4937 Bolts which hold the transmission to the differential and bevel gear group to the correct torque. The torque for these bolts is 100 +/- 14 N.m (75 +/- 10 lb ft). WARRANTY ALLOWANCES Caterpillar Dealer Suggested Customer Suggested Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. (D/N) (Sell) (C/L) (Sell) 100% 1 0 0 0 0 This is a 1-hour job.
Parts Disposition
Not applicable. MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.