OPERATION
When the engine is running, the oil is pumped through
the inlet chamber (5) along the upper and lower side
of the crescent (1) to the pressure chamber (6) of the
housing. The meshing of the teeth prevents oil flowing
from the delivery side to the intake side. An external
gear (3) is eccentrically mounted in the pump housing.
The external gear is driven by the internal gear (4)
which is connected to the torque converter hub.
DISASSEMBLY
1. Remove pump gears (1 and 2) from pump housing.
2. Remove the inner oil pump seal (1).
3. Replace the outer oil pump O-ring (2).
21 - 846
AUTOMATIC TRANSMISSION - NAG1 - SERVICE INFORMATION
WK