Pressure Oil System

C. Pressure Oil System

Pressure oil pump

Mercedes Pump:

Teves Pump:

The pressure oil pump applied is a radial piston pump with four pistons arranged radially in relation to pump shaft.

The pressure oil pump is designed to raise the lowered rear end of vehicle relatively quickly after loading and to make sure that during the following pressureless circuit delivery (circulation) power requirements will be very low.

Engine 102:

The pressure oil pump (1) is driven directly by camshaft and attached to cylinder head by means of a flange (49).





The pump is driven by camshaft (44) by means of driving sleeve (1g) and driver (1b).

Engine 103:

On vehicles with engine 103 the pressure oil pump and the power steering pump are a single unit, the tandem pump. The tandem pump comprises the radial piston pump for level control and the vane-type pump for power steering. The tandem pump is attached to the engine by means of a support and is driven by way of a poly-V-belt.





Both pumps operate as before with ATF for power steering or with hydraulic oil for level control. Both pumps are driven by one shaft. The eccentric (4) of the radial piston pump is connected with the input shaft (3) of the vane-type pump by way of a shearing pin (B), which shears off in the event of an overload. In such a case, the vane-type pump for power steering remains operational.

Engine 110:

Pressure oil pump is flanged to front of camshaft housing,





Drive is by means of exhaust camshaft (44) via spacing sleeve (1g) and driver (1b).

Engine 114, 115, 130:

Pressure oil pump is flanged to cylinder crankcase.





Drive is effected via intermediate gear (30) and driver (1b).





Pressure oil pump is flanged to timing housing cover.





Drive is effected via intermediate gear, intermediate gear shaft and driver.

Engine 615, 616, 617:

Pressure oil pump is flanged to cylinder head.





Driven by guide wheel (36) in cylinder head on shaft (37) and drive (1b).

Fluid Reservoir

Version Up To 85:

Version From 9/85:

On model 126, the fluid reservoir is arranged on the lefthand side of the engine compartment.

Model 126 up to 8/85





The filter element (2h) in fluid reservoir (plastic version) is exchangeable.

Attention! For vehicles with green information label use hydraulic oil part No.000 989 8503.

Model 126 starting 9/85





The fluid reservoir has been taken from model 124. Its smaller capacity changes the filling-in quantity:





Caution! Use hydraulic oil part No.000 989 91 03 only.