Radiator And Water Hoses; Radiator Removal; Radiator Cap Inspection; Radiator Inspection And Cleaning - Suzuki GSX-R750 Service Manual

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5-4 COOLING AND LUBRICATION SYSTEM

RADIATOR AND WATER HOSES

• Remove the under cowling. (6-5)

• Drain engine coolant. (2-18)

• Remove the radiator. (3-4 and -5)

• Fit the cap 1 to the radiator cap tester 2.

• Build up pressure slowly by operating the tester. Make sure

that the pressure build-up stops at 95–125 kPa (0.95–12.5 kgf/

, 13.5–17.8 psi) and that, with the tester held standstill, the

cap is capable of holding that pressure for at least 10 seconds.

• Replace the cap if it is found not to satisfy either of these two

requirements.

Radiator cap valve opening pressure

Standard: 95 – 125 kPa

(0.95 – 1.25 kgf/cm

• Road dirt or trash stuck to the fins must be removed.

• Use of compressed air is recommended for this cleaning.

• Fins bent down or dented can be repaired by straightening them

with the blade of a small screwdriver.

, 13.5 – 17.8 psi)

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