Hendrickson HXL5 - Removing and Installing Hub; Hub Removal

9
T72007 A
HXL5
®
HUB MAINTENANCE PROCEDURES
A� If checking end play after installation, return to
INSPECTING HUB INSTALLATION on page13,
Step3�
B� If end play is more than 0.005” (0�127mm)�
Refer to CONTACTING HENDRICKSON Technical
Services for guidance on required next steps�
IMPORTANT: DO NOT place the suspension back into
service without correcting the problem�
C� If end play is within specication, no bearing
adjustment is necessary� Refer to Figure 13 on
page12 and check to ensure:
i� Spindle nut is secure�
ii� Interlock and tang are properly seated�
iii� Retaining screws are securely in place�
11� If not already done so, perform CHECKING FOR SEAL
LEAKS on page7�
12� Go to INSTALL HUBCAP on page13�
13� Reassemble brake wheel-end components�
REMOVING AND INSTALLING HUB
IMPORTANT: To ensure continued warranty, DO
NOT perform the following procedures
without obtaining prior authorization
from Hendrickson Trailer Technical
Services� Refer to CONTACTING
HENDRICKSON for contact information�
NOTE: In order to maintain warranty status,
CONTACTING HENDRICKSON is recommended
before removing the hubcap and disturbing the
precision spindle nut�
WARNING: Prior to performing maintenance
procedures, help ensure conditions
are safe by following section
PREPARING TRAILER FOR SERVICE on
page5.
HUB REMOVAL
Only after receiving proper authorization from
Hendrickson Technical Services, use the following
procedure to remove the HXL5
®
hub assembly:
1� Remove tire / wheel assembly�
2� Disengage brakes and:
If drum brake, remove brake drum�
If ADB equipped, remove the caliper�
3� Remove hubcap screws and remove hubcap,
discard gasket�
4� Using a hex key (TOOLS REQUIRED on page6),
remove button-head cap screws from interlock
washer Figure 7�
5� Remove interlock washer and spindle nut (Figure 1
on page5)�
NOTE: Pushing on edge of interlock washer near one
of the screw holes will cause the opposite edge
to tip away from the nut, allowing easy removal
of interlock washer�
Figure 7: Button-head cap screw on PRECISION240
®
or
PRECISION320
®
nut system
6� Carefully pull HXL5
®
hub assembly slightly toward
spindle end� A short quick motion should allow
outer bearing to exit the hub� Be prepared to catch
outer bearing if it slides off the end of the spindle�
Otherwise, simply remove it�
7� Remove hub from spindle. The inner bearing is
held in the hub by the hub seal and should come
off with the hub�
8� Remove and DISCARD HUB SEAL:
A� If the seal is in the hub - a pry bar can be
used to carefully remove the seal from the hub
bore� Damage to hub and hub surfaces must
be avoided�
Button-head cap
screw
Interlock washer
PRECISION240
®
or
PRECISION320
®
spindle nut