C/K radiators are crossflow, tube and center type, using an aluminum core with plastic side tanks. The core and side tanks can be replaced separately. Core repair is easily made with the hot melt adhesive method. All radiators are fitted with a shroud designed to assist the fan in directing air flow through the radiator… Read More »
The optional oil cooler is either an integral part of the radiator or a separate unit placed in front of the radiator. If an integral type cooler needs repair, refer to SECTION 6B2. Cooler lines and hoses are serviceable. Refer to figures 39 through 43 for the applicable engine being serviced. OIL COOLER SYSTEM SERVICE… Read More »
Maintaining the multiple ribbed drive belt and pulleys can extend the normal life of a drive belt. PULLEY INSPECTION Examine the pulleys for chips, nicks, tool marks, cracks, bent sidewalls, corrosion, or other damage. 1. Place a straightedge or position a cord across the two pulleys so they touch at all points (figure 34). 2.… Read More »
4.3L, 5.0L, AND 5.7L ENGINES Remove or Disconnect (Figure 27) 1. Negative battery cable. 2. Multiple ribbed drive belt. Refer to “Drive Belt Replacement.” 3. Bolt. 4. Tensioner. Install or Connect (Figure 27) 1. Tensioner to mounting bracket. 2. Bolt. Tighten • Bolt to 83 N-m (61 Ibs. ft.). 3. Multiple ribbed drive belt. Refer… Read More »
Remove or Disconnect 1. Negative battery cable. Refer to SECTION 0A. 2. Multiple ribbed drive belt. Refer to “ Drive Belt Replacement.” • Position a hex head socket on the belt tensioner pulley bolt head. • Move the drive belt tensioner through its full travel. NOTICE : Do not allow the drive belt tensioner to… Read More »
GASOLINE ENGINES Remove or Disconnect (Figures 23, 24, and 25) 1. Coolant from the radiator. 2. Upper fan shroud. Refer to SECTION 6B2. 3. Drive belt Refer to “ Drive Belt Replacement.” 4. Fan, fan clutch, and pulley from the coolant pump. Refer to “ Fan and Fan Clutch Replacement.” 5. Lower radiator (outlet) hose… Read More »
DIESEL ENGINES Remove or Disconnect (Figure 22) 1. Coolant from the radiator. 2. Crankcase depression regulator valve. 3. Generator upper bracket. 4. Bypass hose, upper radiator (inlet) hose, and heater hose. 5. Studs arid bolts. 6 . Coolant crossover housing assembly from the vehicle. • The thermostat and coolant outlet are attached to the crossover… Read More »
GASOLINE ENGINES Remove or Disconnect (Figures 18 through 20) 1. Drain the cooling system until the radiator coolant level is below the thermostat. 2 . Bolts or studs. 3. Coolant outlet. 4. Thermostat from its housing. 5. Gasket (if necessary). Clean *Thermostat housing and coolant outlet sealing surfaces. Install or Connect (Figures 18 through 20)… Read More »
The auxiliary cooling fan provides additional cooling for low-speed vehicle operations, extended idle, stop-and-go conditions, and running the air conditioning system. The auxiliary cooling fan circuit consists of a coolant temperature sensor, relay, and auxiliary fan. When the coolant sensor reaches a predetermined temperature, it closes the circuit to the relay coil. This energizes the… Read More »
Remove or Disconnect (Figures 13 and 14) 1. Radiator fan shroud. Refer to SECTION 6B2. • Locate the yellow dot on the fan clutch hub and mark the coolant pump pulley. 2. Nuts. 3. Fan and fan clutch from the coolant pump pulley. 4. Bolts. 5. Fan from the fan clutch. • Inspect the mating… Read More »