1998/11/01 Caterpillar

3508 (95Y, 68Z),
3512 (1LM, 49Y, 65Z),
3516 (27Z, 71Z) Industrial;
3508 (6TJ),
3512 (2WK),
3516 (9KF) Locomotive;
3508 (96Y, 69Z),
3508 EUI (3PS),
3508B (2BM, 7SM, 1TW),
3512 (50Y, 66Z),
3512 EUI (3RS),
3512B (7HM, 4TN, 2GW),
3516 (29Z, 72Z),
3516 EUI (3SS),
3516B (8CN, 8KN, 3CW) Marine;
3508 EUI (3TS),
3508B (3DM, 3DW),
3512 EUI (3WS),
3512B (8EM, 1PW),
3516 EUI (3XS),
3516B (9AN, 2FW) Marine Auxiliary;
3508 (23Z, 70Z),
3508 EUI (5XM, 3LS),
3508B (4GM, 6PN, 2HW),
3512 (24Z, 67Z),
3512 EUI (6PM, 3MS),
3512B (8RM, 6WN, 4AW),
3516 (4XF, 5FJ, 25Z, 73Z),
3516 EUI (7KM, 3NS),
3516B (6HN, 7RN, 1NW) Generator Set;
3508 (97Y),
3512 (51Y),
3516 (28Z) Vehicular Engines;

References: Applicable Operation and Maintenance Manuals;

Coolant and Your Engine: SEPD0970

Know Your Cooling System: SEBD0518

SOS Coolant Analysis: PEHP5033

Cooling System Maintenance: LEBT9321

Cat Long Life Coolant/Antifreeze (Product Data Sheet): PEHP4036

Cat Long Life Coolant /Antifreeze: PEHD4029

Six Ways to Keep Your Cooling System Working Right: PEDP9113

Diesel Fuels and Your Engine: SEPD0717

All 3500 and 3500B Engines listed above now require cooling system thermostats to be replaced at 6,000 hour intervals. Future Operation and Maintenance Manuals will reflect this change. Proper cooling system maintenance is important to the correct operation of thermostats. The reference publications listed contain various information related to proper maintenance and operating conditions of the thermostats in the above engines.