Honda CB900F Service Manual page 169

COOLIN G SYSTEM
SPECIFICATIONS
ITEM
SPECIFICATIONS
Coolant capacity
I
Radiator and engine
3.2 liter (3.38 US qt . 2.82 Imp qt)
Rese rve tank
0.8 liter (0.85 US qt, 0.70 Imp qt)
Radiator cap relief pressure
108 - 137 kPa (1.1 -1 .4 kgf/cm ' , 16 - 20 psi )
Th ermostat
Begin to open 80 - 84
"C
(176 - 183 ' F)
Fully open
95'C (203 ' F)
Valve lift 8 mm
(0.3
in) minimum
Recommended ant if reeze
Pro Ho nda Coolant or an equivalent high quality
ethylene gly-
col antifreeze contain ing corr osion prot ection inhibitors
specifically recommended for use in aluminum e ng ines
Standard coolant concentration
50/50 % mixture with soft water
TORQU E VALU ES
Water pump cover flange bolt
T he rm ostat cove r flange bolt
ECT/th erm o sens or
Coolin g fan mounting nut
Fan motor mounting nut
TROUBLESHOOTING
12 N'm (1.2 kqf-rn, 9 lbf-ft)
12 N'm (1.2 kqf-m, 9 Ibf·ftl
23 Nvn (2.3 kqf-m. 17 Ibf·ft)
3 N'm (0.27 kqf -m , 2.0 lbf-ft)
5 N'm (0.5 kqf-rn, 3.6 Ibf·ft)
CT bolt
CT bolt
Apply a lock ing agent to the threads
Engine temp erature t oo high
Fau lty tem perat ure gauge or ECT/t herm o sens or
Thermostat stuck closed
Faulty radiator cap
Insuff icient coolant
Passages blocked in radiator, hoses or water jacket
Air in system
Faulty cooling fan motor
Faulty fan motor relay
Faulty w ater pump
Engine tem perature too low
Faulty temperature gauge or EeT/thermo senso r
Thermostat stuck open
Fau lty coo ling fan motor relay
6-2
Coo lant leak
Faul ty w ate r pump mechanical seal
Deteriorated O-rings
Fau lty rad iator cap
Dam aged or deteriorated cylinder head gasket
Loose hose co nnection or clamp
Dam aged or deteriorated hose