Section E - Hydraulics
Rams
Typical Ram
E-150 E-150
9803-9340-8
Care must be taken to ensure the seal is square before it
is pressed in.
f Sleeve 9-A must be used to protect the rod seals
from damage when fitting end cap onto the piston
rod. There are various sizes of sleeve, see
Service Tools, Section 1. Make sure the hexagon
on the end cap is towards the eye end of the rod.
Fig 9.
2 Fit new head piston seals.
a Use a blunt instrument 10-A (Part no. 892/01027)
to lever the inner seal 10-B into the piston head
seal groove. Do not let the seal twist. There are
identification marks on the outer diameter of the
seal, make sure the marks are visible and the seal
is free to rotate, if not remove the seal and refit.
Fig 10.
b Fit outer seal 10-C using the same procedure as
stated for seal 10-B. Check the external grooves
are visible.
c Ensure the O-ring is fitted into the internal seal
groove on the piston head. Screw the piston head
onto the thread of the piston rod, refer to the
relevant section for torque figure and completion
of ram assembly.
d Fit the piston head retaining dowel, refer to the
relevant section for torque figure and completion
of ram assembly.
e Fit wear rings 11-A and 11-B. Rotate the wear
rings so that the piston retention dowel is covered
by the wear ring, Not as shown at 11-C.
Fig 11.
3 Fit the piston rod and head assembly into the cylinder.
a Insert the piston/rod assembly into the cylinder.
Align the rod and head assembly until parallel with
the cylinder then push the assembly into the
cylinder.
b Fit the end cap, refer to the relevant section for
torque figure and completion of ram assembly.
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