LR3/Disco 3
from the engine crankshaft to the transmission planetary gear train.
FLUID PUMP
The fluid pump is an integral part of the transmission. The fluid pump is used to supply hydraulic pressure for the
operation of the control valves and clutches and also to pass the fluid through the transmission cooler.
The 6HP26 fluid pump is a crescent type pump and is located between the intermediate plate and the torque converter.
The pump has a delivery rate of 16cm
3
per revolution.
The pump comprises a housing, a crescent spacer, an impeller and a ring gear. The housing has inlet and outlet ports to
direct flow and is located in the intermediate plate by a centring pin. The pump action is achieved by the impeller, ring
gear and crescent spacer.
The crescent spacer is fixed in its position by a pin and is located between the ring gear and the impeller. The impeller is
driven by drive from the torque converter which is located on a needle roller bearing in the pump housing. The impeller
teeth mesh with those of the ring gear. When the impeller is rotated, the motion is transferred to the ring gear which
rotates in the same direction.
Item Part Number
Description
1
-
Securing ring
2
-
Shaft oil seal
3
-
O-ring seal
4
-
Pump housing
5
-
Ring gear
6
-
Crescent spacer
7
-
Roller bearing
8
-
Impeller
9
-
Centring pin
10
-
Spring washer
11
-
Outlet port (high pressure)
12
-
Inlet port (low pressure)
