Troubleshooting - Honda 2005-2008 RX500 FA Service Manual

'61HN252' by American Honda Motor Co. - Page 139 of 540
[2005-2008] [TRX500 FA/FGA]
SERVICE INFORMATION
GENERAL
Removing the radiator cap while the engine is hot can allow the coolant to spray out, seriously scalding you.
Always let the engine and radiator cool down before removing the radiator cap.
Using coolant with silicate inhibitors may cause premature wear of water pump seals or blockage of radiator passage.
Using tap water may cause engine damage.
· If any coolant gets in your eyes, rinse them with water and consult a doctor immediately.
· If any coolant is swallowed, induce vomiting, gargle and consult a physician immediately.
· If any coolant gets on your skin or clothes, rinse thoroughly with plenty of water.
· Add coolant to the system at the reserve tank. Do not remove the radiator cap except to refill or drain the system.
· All cooling system service can be done with the engine in the frame.
· Avoid spilling coolant on painted surfaces.
· After servicing the system, check for leaks with a cooling system tester.
· Refer to
SPECIFICATIONS
Coolant capacity
Radiator cap relief pressure
Thermostat
Recommended antifreeze
Standard coolant concentration

TROUBLESHOOTING

Engine temperature too high
· Thermostat stuck closed
· Faulty radiator cap
· Insufficient coolant
· Passage blocked in radiator, hoses or water jacket
· Air in system
· Faulty cooling fan motor
· Faulty water pump
· Faulty temperature indicator drive circuit
· Faulty fan motor drive circuit
Coolant leaks
· Faulty water pump mechanical seal
· Deteriorated O-rings
· Faulty radiator cap
· Damaged or deteriorated cylinder head gasket
· Loose hose connection or clamp
· Damaged or deteriorated hoses
1 of 1
22-21 for engine coolant temperature sensor information.
ITEM
Radiator and engine
Reserve tank
Begin to open
Fully open
Valve lift
(page 22-17)
(page 22-17)
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
SPECIFICATIONS
1.7 liters (1.8 US qt, 1.5 lmp qt)
0.40 liter (0.42 US qt, 0.35 lmp qt)
108 137 kPa (1.1 1.4 Kgf/cm , 16 20 psi)
2
80 84°C (176 183°F)
95°C (203°F)
8 mm (0.3 in) minimum
Pro Honda HP Coolant or an equivalent high quality ethyl-
ene glycol antifreeze containing silicate-free corrosion
inhibitors
1:1 mixture with soft water
COOLING SYSTEM
6-3
3/9/2008 10:46 PM