KIT-ACCESSORY RELAY 1627270 - Caterpillar

At operating temperature, the engine cooling system is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the fill cap on the radiator is cool enough to touch with your bare hand. Remove the fill cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury.
Belt tightener and fan drive removed for better pictures. 1. Remove fan and alternator belts. Disconnect belt tightener at tightener pulley.2. Disconnect two grease lines (3). Remove two bolts and washers (2) and oil filler (1) and the shield.3. Remove alternator tightener bolt and washer (4). 4. Remove three bolts (6) and tightener pulley (5).5. Remove bolt (7) and (8).6. Loosen bolt (9) but do not remove.7. Remove bolt and washer (10) and lower the alternator. 8. Remove bolt and washer (11).9. Remove two bolts, washers and ground wire (13).10. Remove bolt (14) and housing (12). 11. Remove nut, bolt and washer (16) and the bolt holding the dipstick tube to the cylinder. Remove dipstick and tube assembly (17).12. Disconnect lines (15) and (18). 13. Remove two bolts (19) and four bolts (21).14. Remove elbow (20) and inlet housing (22). 15. Remove remaining bolts (23) holding waster pump (24) in place. Remove the water pump. Install in the reverse order. For adjusting belt tension, see the topic, Fan and Alternator Belts in the Operation & Maintenance Manual. Refer to the topic "Lubricant Viscosities and Refill Capacities" in the Operation and Maintenance Manual for the proper filling procedure.Disassemble & Assemble Water Pump
Start By:a. remove water pump 1. Remove O-ring (2). Remove inlet adapter (1) and O-ring (3) on the back side. 2. Remove bolt and washer (4) holding impeller (5). 3. Use two bolts to attach Tooling (A) to impeller as shown to remove impeller (5). 4. Remove O-ring (10), four bolts (8), bolt (6) and retainer (7).5. Remove gear (9). 6. Remove retainer (12) and bearing assembly (11). Remove shaft (13) from the water pump housing. 7. Replace seal assembly (14) if necessary. Spring (15) is part of seal assembly (14). Assemble in the reverse order. Seal in housing is installed with the polished face of the ring towards the carbon seal head assembly.8. Tighten bolt (4) holding impeller (5) to the torque of 39 3 N m (29 2 lb ft)