GF43.10-P-3101GG Brake System Vacuum Pump, Location/Task/Design/Function

GF43.10-P-3101GG Brake System Vacuum Pump, Location/Task/Design/Function
MODEL 460, 461.217 /219 /223 /227 /229 /238 /239 /249 /266 /267 /302 /321 /322 /323 /326 /327 /328 /329 /331 /332 /335 /336 /337 /338 /341 /342 /345 /365 /366 /367 /368 /401 /402 /403 /404 /405 /450 /451 /452 /454 /455 /456 /458 /459, 463 up to 31.5.12





Task
Produce vacuum for the brake unit

Design
Piston pump (installed on engines 602, 603)
2 Reed valve (suction side)
4 Piston
5 Reed valve (pressure side)
6 Separation valve
7 Gasket
8 Pump housing
9 Pump cover
12 Oscillating lever
14 Outer compression spring
15 Bottom compression spring
16 Roller
17 Piston rod
21 Inner compression spring
23 Top spring plate
28 Piston ring
30 Radial seal ring
31 Oil retaining valve
32 Restrictor

SB = Suction side, brake
SK = Suction side, idle speed increase

Special maintenance is not required
Function
Double-acting piston vacuum pump. It is flanged-mounted on the timing case cover.
It is driven by the cam of the injection timer and lubricated by oil spray from the engine.
The pump cover is made from sheet steel and caulked to the pump housing. The vacuum pump can therefore no longer be repaired.
The vacuum pump works in both directions, i.e. it has two suction circuits, which however are connected to each other via a separation valve.
One circuit supplies the brake unit and the other the auxiliaries, such as, idle speed increase. An oil retaining valve is installed in both connections. A 0.8 mm dia. fixed orifice is located in the connection for the auxiliaries so that the brake unit circuit and idle speed increase are supplied as high priority.