Do not use glue when installing the water pump!!!

When installing the water pump of EA211 or EA888 models, it is forbidden to use sealant because the water pump is already equipped with a sealing ring when it leaves the factory.

 

When installing the water pump of EA211 or EA888 models, it is forbidden to use sealant because the water pump is already equipped with a sealing ring when it leaves the factory.

The main reasons for prohibiting the use of sealants are: 1. The sealing rings provided at the factory have the characteristics of high elasticity, high temperature resistance and corrosion resistance. Illegal use of sealants will cause the sealing rings to harden and deform, and the sealing performance will decrease.

2. The sealant inside the water pump falls off, which can cause the impeller to be damaged, the thermostat to be stuck or the water seal to be damaged, resulting in water pump damage and water leakage.

3. The detached sealant will enter the cooling system, causing pipe blockage, affecting the engine's heat dissipation effect, and causing serious damage to the engine.

G4NC 2.0L 20910-2EU05

 

Illegal use of coolant

Current situation: 1. Excessive use or complete use of water instead of coolant.

2. Use of inferior coolant.

Hazards: 1. Rust appears in the water circulation system, hindering flow, isolating and reducing heat transfer.

2. A large amount of scale accumulates in the water pump and pipes.

Reasons: 1. A large amount of scale will affect the normal opening and closing of the thermostat, as well as block the water pipes and affect the heat dissipation effect.

2. Rust on the water pump and pipes will seriously affect the service life of engine-related accessories.

Improper installation
Phenomenon: Wrong selection of fixing bolts, or excessive tightening torque, or wrong bolt tightening sequence. Hazard: Cracked thermostat housing causes water pump leakage.

Normal installation method: (taking EA888 water pump as an example)

1. The standard installation torque of EA888 second-generation and third-generation water pump assemblies is 9Nm. Do not tighten too much. Adjust the torque wrench to the corresponding value. When it reaches 9Nm, it will make a sound, indicating that the torque has reached the standard. Once the torque is too large, the water pump housing will rupture, causing the water pump to leak.

2. Tighten the screws in sequence according to the serial number during installation.

NISSAN  VQ40   12010-SKR200