Cooling System Service Information; Cooling System Troubleshooting; Cooling System Specifications; Cooling System Torque Values - Honda Gold Wing GL1200D Shop Manual

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HONDA
~GL1200DoGL1200A
6. COOLING SYSTEM
SERViCE INFORMATION
6-1
TROUBLESHOOTING
6-1
INSPECTION
6-2
COOLANT REPLACEMENT
6-3
RAOIATOR
6-4
THERMOSTAT AND WATER PIPES
6-7
WATER PUMP
6-9 D
SERVICE INFORMATION
GENERAL
~
• Use new gaskets and a-rings when reinstalling or replacing cooling system parts.
• Use only distilled water and ethylene glycol in the cooling system. A 50·50 mixture is recommended for maximum corro-
sion protection. 00 not use alcho\·based anti·freeze.
• Add coolant at the reserve tank. Do not remove the radiator cap except to refill or drain the system.
• Do not remove the radiator cap when the engine is hot. The cootant is under pressure and severe scalding could result. The
engine must be cool before servicing the cooling system.
• Avoid spilling coolant on painted surfaces.
• After servicing the system, check
fOf
leaks with a cooling system tester.
SPECIFICATIONS
Radiator cap relief pressure 75-105 kPa
(0.75~
1.05
kg/cm
2
,
10.7-14.9 psi)
Freezing point (Hydrometer test): 55% Distilled water
+
45% ethylene glycol: -32"C (-26" F)
50% Distilled water
+
50% ethylene glycol: -37"C (-35"F)
45% Distilled water
+
55% ethylene glycol: -44.5"C (-48"F)
Coolant capacity:
After disassembly 2.15 liters (2.3 US qt. 1.91mp qt)
Reserve tank 0.55 liters (0.6 US qt, 0.5 Imp qt)
After draining (included reserve tank)
2.7 liters (2.9 US qt. 2.4 Imp qt)
Thermostat 8egins to open: 80" to 84"C (176" to 183"F)
Fully open: 93" to 97"C (199" to 20S"F)
Valve lift: Minimum of 8 mm at 95"C (0.315 in at 203"F)
Boiling point (with 50-50 mixture): Upressurized: 107.7"C (22S"F)
Cap on, pressurized: 125.6" C (258" F)
TORQUE VALUES
Coolant drain plug
Coolant temperature sensor
Thermostatic fan motor switch
TROUBLESHOOTING
35-40 N'm (3.5-4.0 kg·m, 25-29 ft·lb)
21-25 N·m (2.1-2.5 kg·m, 15-18 ft-Ib)
24-32 N'm (2.4-3.2 kg'm, 17-23 ft·lb)
Engine temperature too high
• Faulty temperature gauge or gauge sensor
• Thermostat stuck closed
• Faulty radiator cap
• Insufficient coolant
• Passages blocked in radiator, hoses, or water
jacket
• Fan blades bent
'-'" • Faulty fan motor
• Faulty fan motor
• Radiator cap not holding pressure
• Fan not working:
- Faulty thermostatic switch
- Faulty fan motor
• Water pump not rotating
• Water pump impellers damaged
• Incorrecfcoolant·water ratio'
Engine temperature too low
• Faulty temperature gauge or gauge
sensor
• Thermostat stuck open
Coolant leaks
• Faulty pump seal
• Deteriorated Q'rings
• Radiator hose damaged
• Loose or overtightened hose clamps
6-1