SPRING 9N1653 - Caterpillar

Marine EngineC12.9MARENG (S/N: PC7253-411; TPJ259-470)C8.7 (S/N: CS7259-461)Reference: For Standard torque values, refer to Torque Specifications, SENR3130.Description Of Change: New specification is now used for air inlet heater relay nuts to prevent the loosening of the nuts.Adaptable To: The following changes are adaptable to the engines within the listed serial numbers, and are effective with all engines after the listed serial numbers.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Illustration 1 g06191183
C12.9
(1) Re-attach
Illustration 2 g06191185
C8.7
(1) Re-attachRe-attach any loose connections that may be removed and tighten any loose nuts using standard torque. Refer to Illustration 1 and 2 for the wiring.The heater grid nuts have special torque values, tighten the nuts to torque mentioned in Table 1:
Table 1
Part Specification
M8 (1.25 Pitch) 22 - 27 N m (195 - 239 lb in)
M6 (1 Pitch) 10 N m (89 lb in)