Motorcycle engine cooling system Honda XRV750 Africa Twin (1989-2003)

Cooling system — specifications
Coolant Mixture type and capacity — see Chapter 1 Cooling fan switch Switch closes (fan ON) — 98 to 102°C Switch opens (fan OFF) — 93 to 97°C Coolant temperature sender XL models Resistance @ 50°C — 154 ohms Resistance @ 80°C — 52 ohms Resistance @...

General information about cooling system
The cooling system uses a water/antifreeze coolant to carry away excess heat from the engine and maintain as constant a temperature as possible. Each cylinder is surrounded by a water jacket from which the heated coolant is circulated by...

Radiator pressure cap — check
1. If problems such as overheating or loss of coolant occur, check the entire system as described in Chapter 1. The radiator cap opening pressure should be checked by a Honda dealer with the special tester required to do the job. If the cap is...

Cooling fan and fan switch — check and replacement
Cooling fan Check 1. If the engine is overheating and the cooling fan isn't coming on, first check the cooling fan circuit fuse (see Chapter 9). If the fuse is good, check the fan switch as described below. 2. If the fan does not come on (and the...

Coolant temperature gauge and sender — check and replacement
Coolant temperature gauge Check 1. The circuit consists of the sender mounted in the thermostat housing and the gauge assembly mounted in the instrument cluster If the system malfunctions first check the fuse. 2. If the gauge is not working, remove...

Thermostat and housing — removal, check and installation
Removal Note: The complete thermostat housing can be removed without removing the thermostat itself. Warning: The engine must be completely cool before carrying out this procedure. 1. The thermostat Is automatic in operation and should give many...

Radiators — removal and installation
Removal Warning: The engine must be completely cool before carrying out this procedure. Note: If the radiators are being removed as part of the engine removal procedure, detach the hoses from their unions on the engine rather than on the radiators...

Waterpump — check, removal and installation
Check 1. The water pump is located on the lower left-hand side of the engine. Visually check the area around the pump for signs of leakage. 2. To prevent leakage of water from the cooling system to the lubrication system and vice versa, two seals...

Coolant reservoir — removal and installation
Removal XL600V models 1. The coolant reservoir is located behind the engine on the left-hand side. Remove the rear shock absorber to access it (see Chapter 8). 2. Note how the reservoir is located and how the various hoses and cables are routed...

Coolant hoses and unions — removal and installation
Removal 1. Before removing a hose, drain the coolant (see Chapter 1). 2. Use a screwdriver to slacken the larger-bore hose clamps, then slide them back along the hose and clear of the union spigot. The smaller-bore hoses are secured by spring clamps...