38019 Mariner LOCKWASHER, INPUT STUD

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PRIORITY - CAMSHAFT BOLTS NEED TO BE CHECKED FOR LOW TORQUE ON CERTAIN 3606, 3608, 3612, AND 3616 ENGINES - PI3394 - MAILED US, CANADA CACO, COFA, CFEL, 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.
U-50 A-35 AU-33 E-27 O-36.1 PRIORITY 1210 PI3394 Termination Date
March 31, 1990
Problem
The bolts that hold the camshaft segments together on certain 3606, 3608, 3612, and 3616 Engines may not be tightened to the correct torque.
Affected Product
Model Identification Number 3606 8RB1-341, 343, 344, 346, 348 3608 6MC1-267, 269-272, 274, 277-279 5PG1-3 3612 9RC1-26, 29-47, 52-54 3616 1PD1-24, 26-28
Parts Needed
Not Applicable
Action Required
Check the torque of the 0S1585 Bolts that hold the camshaft segments together and tighten them if necessary. The correct torque for the 0S1585 Bolts is 135 +/- 15 N.m (100 +/- 10 lb ft). Mark all of the bolts as they are checked to make sure none are missed. If any of the bolts are not tightened to the correct torque or are missing, record the quantity and position of these bolts and send to: All Dealers Except COSA COSA Dealers Caterpillar Inc. Caterpillar Overseas S.A. Moss-VV SEGO P.O. Box 456 P.O. Box 600 1211 Geneva 6 Mossville, Il 61552-0600 Switzerland Attn. Michael A. Watson Attn. Product Support Engr. 3600 Engines - 3EN40
Service Claim Allowances
Caterpillar Dealer Suggested Customer Suggested Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. (D/N) (Sell) (C/L) (Sell) 3606 Engines - 3 0 0 0 0 3608 Engines - 4 0 0 0 0 3612 Engines - 6 0 0 0 0 3616 Engines - 8 0 0 0 0 This is a 3 to 8-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.