Removing The Oil Pump - Wacker Neuson BS 50-4s, BS 50-4As Repair Manual

Disassembly and Reassembly
4.39

Removing the Oil Pump

Background Oil-injection machines can run up to 65 hours on one tank of oil.
If the machine has been used for a long period of time and it does not
appear to have used any oil and the oil line check valve is operating
correctly, remove and check the oil pump.
■ Machine shut down and cool
Requirements
■ Engine removed
■ Oil tank at least 1/4 full
Procedure Perform the procedure below to remove and test the oil pump.
To view an animation of this procedure, internet access
is needed.
To view the animation, click on the video icon or scan
the QR code with a smart phone.
1. Remove the engine. See topic Removing the Engine—WM80.
2. Remove the clamp (a) and the output hose (b) from the oil pump. Do not
remove the input hose.
3. Remove the three screws (c).
This procedure continues on the next page.
b
a
c
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Rammer
c
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