MBW R442 - Manual (Page 9)

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2. If the oil is not visible in the sight gauge, add oil as
required. See Fluid Levels for recommended type of
oil.
Changing Percussion System Oil
Refer to Lower Unit Assembly, page 16.
1. Remove the drain plug (#4) below the sight glass (#9)
on the back of the spring box guard (#8).
2. Place an oil drain pan behind the shoe and tip the
rammer back so the handle is on the ground.
Refer to Gearbox and Lower Unit Assembly, page 18.
3. With the handle still on the ground, remove the four
hex head flange screws (#8) holding the cover (#2) to
the gearbox (#4).
4. Remove the cover, the cover gasket (#3), and the
dowel pins (#1) from the gearbox.
5. Tip the unit forward and drain any oil into an oil pan.
6. After the oil has drained out, replace the dowel pins,
gasket, and cover and secure with the four hex head
flange screws.
7. Tip the rammer onto it’s face and fill according to the
Fluid Levels section in this manual.
8. Replace the drain plug (page 16, #4).