Bendix Commercial Vehicle Systems C-300N HYDRAULIC POWER STEERING1/99 - Manual (Page 25)

25
FIGURE 54 - INSTALLING ASSEMBLED OUTPUT & SIDE
COVER
making certain the slot in the underside of the cover
mates with the recirculating tube in the piston. Install
the retaining ring (36) in the piston to secure the tube
cover making certain it is completely seated in its groove.
After assembly, check for smooth rotation of the spindle
assembly in both directions. Figures 21, 22, 24
HOUSING REASSEMBLY
23. Reaching through the side cover opening of the housing
(22), install the seal (29) with its pressure side toward
the INTERIOR of the housing. Note: Do not distort this
‘flexible’ seal any more than is necessary for
installation, Install the split nylon backup ring (28), which
is a separate part of the seal (29), by winding it into the
groove formed by the backside (non-pressure side) of
the seal and the housing. Make certain the split ring is
completely seated and that the diagonal split surfaces
of the ring mate properly. Note: This seal prevents
pressurized fluid from leaking out of the housing around
the output shaft. Figures 50 & 51.
Note: The two piece seal (seal and nylon split ring)
may not be used in all steering gears. A one piece
seal is sometimes used instead.
24. Install the dust seal (38) in the housing (22) with its
sealing lip toward the OUTSIDE of the housing. Note:
This seal is intended to prevent water and dirt from
entering the housing. Figure 30.
25. Install the O-ring (20) in the groove around the steering
limiting stem (19) and screw the stem(19) and screw
the stem (19) into the housing (22) about five or six full
turns. Figure 52
26. Install the seventeen rollers of the bearing (26) in the
outer race contained in the housing (22). Use a heavy
coating of lithium grease to hold the rollers in place.
IMPORTANT: The seventeen rollers that are
installed must be the same rollers that were
removed from this bearing during ‘Disassembly’.
Figure 53
27. Align the steering limiting stem (13) in the valve body
(7) with the steering limiting valve seat (17) in the piston
(23). Insert the piston (23) into the housing (22) so that
the rack teeth of the piston are visible in the side cover
opening in the housing. (Figures 20 & 53) Make certain
that the valve body is oriented in the housing so that the
marks made during disassembly align. Slide the piston
and valve body assembly completely into the housing
taking SPECIAL CARE not to damage the piston glide
ring (14) and the valve body O-rings(12). Secure the
valve body(7) to the housing (22) using four bolts (40).
Torque the bolts to 81-88 pound feet for the C-300N
and 92-99 pound feet for the C-500N using a 19mm
socket and socket and torque wrench. Rotate the input
shaft of the spindle (3) until the rack teeth of the piston
are centered in the side cover opening in the housing.
Figure 53
OUTPUT SHAFT & SIDE COVER REASSEMBLY
28. Install the shim washer (34) over the adjusting screw
(33) and secure both in the output shaft (25) using the
retaining ring (30). The maximum end play permitted
for these parts is .002", however, binding should to
occur. If end play is excessive, it may be necessary to
install a different shim washer (34). The shim washer is
available in eight different thicknesses to provide the
proper end play. Figure 39
29. Install the seal (29) in the side cover (31) with its
pressure side toward the outer race of the side cover
roller bearing (26). Note: This seal prevents fluid leakage
around the output shaft. Do not distort this ‘flexible’ seal
more than is necessary for installation. Install the split
nylon backup ring, (28) which is a separate part of the
seal, by winding’ it into the groove formed by side cover
and the backside of the seal (29). Make certain the split
ring is completely seated and that the diagonal split
surfaces of the ring mate properly. Install the O-ring
(27) in its groove in the side cover(31). Figure 29 & 50
Note: The two piece seal (seal and nylon split ring) may
not be used in all steering gears. A one piece seal is
sometimes used instead.
30. Install the seventeen rollers of the bearing (26) in the
outer race contained in the side cover (31). Use a heavy
coating of lithium grease to hold the rollers in place.
IMPORTANT: The seventeen rollers that are installed
must be the same rollers that were removed from
this bearing during ‘Disassembly’. Refer to Figure 18