freightliner PE116DC, Maintenance Manual

Page: 66 / 164

nism several times to test. Repeat if necessary.
See
Fig. 5 .
If the lock is too loose, loosen the jam nut, turn
the adjustment bolt counterclockwise one full
turn, then reset the jam nut. Lock and unlock the
mechanism several times to test. Repeat if nec-
essary. See
Fig. 5 .
9. If the fifth wheel is equipped with a sliding
mechanism, inspect and adjust it as follows.
9.1 Check the bracket for any cracks or miss-
ing and damaged parts.
9.2 Inspect the locking plungers for full en-
gagement.
9.3 Check the locking mechanism for proper
operation.
If the plungers will not release, check the
air cylinder or plunger adjustment.
If the plungers are loose, check the
plunger adjustment and the plunger
springs for proper compression. Replace
if needed.
9.4 The outboard slider assembly requires no
adjustment. If the plungers are loose, in-
spect and replace locking mechanism
parts as needed.
9.5 The inboard slider is adjustable for frame
width and plunger engagement. For ad-
justment, refer to the fifth wheel installa-
tion instructions.
10. Replace cracked, worn, or damaged parts with
new parts. Replace all loose mounting bolts with
5/8–11 SAE grade 8 bolts, grade C locknuts, and
hardened washers. Do not re-use bolts, nuts,
and washers on fifth wheel mountings.
11. After inspecting the fifth wheel, lubricate all mov-
ing parts with a chassis or multipurpose grease.
Apply a generous coating of grease to the top
09/01/2009 f311101
Fig. 3, Bracket Pin Bolt Locking Tabs
09/01/2009 f311099
A
B
C
D
E
F
G
H
A. Checking for fore/aft play.
B. Rotating tester in lock.
C. Engage hook.
D. Pull/push handle fore/aft.
E. Check for movement of kingpin in lock.
F.
Disengage hook.
G. Push/pull handle inboard/outboard.
H. Rotate lock tester.
Fig. 4, Jost Fifth Wheel Adjustment
Frame and Frame Components
31
New Cascadia Maintenance Manual, September 2018
31/4