Bendix Commercial Vehicle Systems COMPACT 500 9/87 User Manual

Page 19

FIGURE 38

Insert the 19 balls (29) one by one in one of the openings for

the recirculating tubes located in the piston (48) while turning
the spindle at the same time. Balls inserted in one opening

should recirculate to the opposite opening as the ball screw

is rotated. Before proceeding, make certain the balls are at
an equal depth in both holes of the piston. (See Figure 38).

This will assure correct installation of the return tube (49).

Install the seven remaining balls(29) into the ball return tube
halves(49) using lithium base general purpose grease (Ford

Chassis grease ESA-M1C75-B) to retain the balls. Place

the tube into piston(48), install the tube cover(50) and its
snap ring(51). Check for smooth operation of the spindle

assembly. (See Figure 39)

NOTE: the utmost care must be taken with these

steps. Incorrect assembly of this group may result in

one or more balls failing inside the piston or coming
out at the top of it and lodging in the bottom of the

housing(45).

Install the O-Ring(47) and back-up rings(46) on the piston.
(See Figures 36 & 40)

NOTE: Make certain to rotate the glide rings(46) so
that their gaps are 180° apart and not in line with

each other.

HOUSING ASSEMBLY

6. If the outer race of bearing(26) was removed, it must be

reinstalled using tool 297677. Center the narrow bearing

spacer on tool 297677 then install the bearing(26)
complete with its outer race(26) on the tool. Drive the

bearing and race along with the spacer into the housing

from the output shaft side of the housing until the tool
bottoms against the outside of the housing. (See Figures

41A, B & C) Remove the tool and check to be certain

that the outer race and spacer have been driven into the
housing sufficiently deep to allow installation of the snap

ring(25). If the snap ring(25) cannot be installed, remove

the narrow bearing spacer and using tool 297647 drive
the bearing race further into the housing. Reinstall the

narrow bearing spacer and install the snap ring(25),

making certain it is completely seated in its groove. Using
tool 297647 tap the outer race from inside the housing

FIGURE 40

FIGURE 39