MAN-2V3B-4.1V REV (B)
22
7.7
PISTON RODS & OIL WIPER SEALS
REMOVE PISTON ROD
a.
Remove cylinder and head in accordance with the appropriate sections of Chapter 7.
Remove distance piece covers.
b.
Turn the flywheel by hand to position the piston at top dead center.
c.
Remove the set screw (5/32" allen wrench required) and slide the oil wiper box upward
on the rod until the guide piston jam nut is exposed.
d.
Loosen the jam nut and screw the piston rod assembly out of the guide piston. The piston
adjustment tool (#88-A8037) or small screwdriver can be inserted in the hole in the rod to
aid in turning the rod.
NOTE: It is recommended that the oil wiper seals be replaced anytime the rods are removed.
Rod surface must not exceed a finish of 16 RMS.
7.7.1
INSTALL PISTON ROD and OIL SEALS
a.
Install new oil seals in oil packing box (lips facing down). Pre-lubricate seals to avoid
damage during startup. Inspect o-ring on oil wiper box and replace if necessary.
b.
Install o-ring slinger onto piston rod. Slide oil packing box onto rod and then attach
piston rod jam nut with machined side down.
c.
Screw the rod into the guide piston until the threads bottom.
d.
Reinstall the cylinder assemblies and adjust piston rod per instructions below.
CAUTION
The piston to cylinder head clearance adjustment is critical. Insufficient
clearance will result in the piston hitting the head.
Summary of Contents for RIX 2V3B-4.1V Series
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