John Deere約翰迪爾強(qiáng)鹿柴油機(jī)渦輪增壓器油封泄漏檢查

Seals are used on both sides of the turbocharger rotor

assembly. The seals are used to prevent exhaust gasses

and air from entering the turbocharger housing. Oil

leakage past the seals is uncommon but can occur.

A restricted or damaged turbocharger oil return line can

cause the housing to pressurize, causing oil to leak by the

seals. Additionally, intake or exhaust restrictions can

cause a vacuum between the compressor and

turbocharger housing, causing oil to leak by the seals.

1. Remove exhaust pipe (shown removed) and crossover

tube (A).

2. Inspect the turbine casing and crossover tube for

evidence of oil leakage.

If oil leakage is present, perform the following:

· Inspect turbocharger oil return line (B) for kinks or

damage. Replace if necessary.

· Check the air intake filter, hoses, and crossover tube

for restrictions.

· Check the exhaust system for restrictions to include

position of exhaust outlet.

3. Perform necessary repairs and repeat test.