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b. Use an 8# sleeve to remove 2 bolts ⑵, take off the thermostat assembly, and remove the O ring ⑾ from the
thermostat assembly. Once disassembled, O ring ⑾ needs to be replaced.
Before reassembly, the joint surface should be cleaned. Note that the O-ring cannot be missing and must be
correctly assembled in place. The hoop should be clamped inside the boss to prevent loosening. Bolt ⑵ Torque:
12±1.5 N.m (1.2±0.2 kgf.m, 9±1 lbf.ft).
Cooling system accessories
Caution:
●Special ventilation tooling (gas pressure reducing valve, air gun, sealing tube) is required for testing.
●After the soaking inspection is completed, the water stains should be wiped clean in time, or use a dust blower to
blow dry. If the main water tank and the small water tank are blown dry by blowing dust loose, the wind pressure
should not be too large and should be far away from the radiating fins to avoid damage or deformation of the radiating
fins.
●Except the gas pressure is specified when doing the air tightness test, the compressed air of 160kPa (1.63 Kgf/cm2,
23.2 psi) shall be introduced, and the parts shall be immersed in water and left for 10s without bubbles. If there are
bubbles, the air leaks and needs to be replaced.
●The heat dissipation fins are allowed to have a small amount of lodging deformation. If the lodging area is too large,
it will affect the heat dissipation effect, and it is recommended to replace it. A small amount of deformation can be
corrected with a small flat-blade screwdriver.
●It is forbidden to use high-pressure water gun or high-pressure air to directly flush or blow the heat sinks of the main
water tank and the small water tank.
●Before further testing, check the appearance for signs of leakage. If there is a slight leakage, try to repair it,
otherwise it should be replaced.
1. Main water tank
Check whether the cushion rubber is aging and cracked.
Block the A and C ports with a self-made cap, and check the
tightness by ventilating from the B port.
Compressed air with lower air pressure can be blown from the
back to the water tank from a long distance to clean up foreign
objects on the surface. Or use a low-pressure water gun to spray the radiating fins from a long distance to clean up
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