Freightliner Coronado 132 / 122SD. Manual — part 14
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
plate to fill the grooves, or depressions, on the
top plate. See MOP 31–02 in this manual for lu-
brication instructions.
31–02 Fifth Wheel Lubrication
To maintain proper fifth wheel operation, always lubri-
cate the fifth wheel after an inspection has been
performed.
IMPORTANT: Lubricate the fifth wheel:
• After power washing, or steam cleaning.
• If the vehicle operates in harsh conditions such
as salt spray from road surfaces, or in ex-
tremely dusty environments.
• After any service that requires removal of lubri-
cant from the fifth wheel head or components.
WARNING
Failure to properly lubricate the fifth wheel could
result in a possible disengagement of the trailer
from the tractor, which could result in personal
injury or property damage.
Fontaine
1.
Tilt the top plate forward (the front of the fifth
wheel is down) and apply grease to each bearing
area through the zerk fittings located on each
side of the top plate just to the front of the
bracket pins. Continue to apply grease until it is
coming out of the back of the bearing. It may be
necessary to raise the rear of the fifth wheel with
a pry bar to open up the pocket slightly and
allow the grease to flow through. A substantial
amount of grease may be required initially to fill
the reservoir.
Tilt the fifth wheel ramps down (the rear of the
fifth wheel is down) and repeat the greasing pro-
cedure. Rock the top plate back and forth sev-
eral times to spread the grease over the bearing
surface.
2.
Inspect the trailer kingpin plate and top surface
of the fifth wheel to make sure each is properly
greased. A liberal coating of grease should be
applied to the complete surfaces of both the
trailer kingpin plate and the top surface of the
fifth wheel.
NOTE: Do not use a lube plate (high density
polyethylene) on top of the fifth wheel or on the
kingpin instead of grease without prior approval
by Fontaine Fifth Wheel. The additional thick-
ness of this material can prevent the proper op-
eration of the fifth wheel and may cause a dan-
gerous condition.
NOTE: Fontaine suggests the use of a Moly
based lubricant such as Mobilgrease XHP 320
or equivalent when applying lubricant to the
locking jaw and wedge.
3.
Lubricate the fifth wheel prior to opening and
closing it. Separate the jaw and wedge with a
screwdriver, and grease the full length of their
mating surfaces. Lubricate the top and bottom
contact surfaces of the jaw and wedge. See
. Open and close the fifth wheel several
times to further distribute the grease.
Lightly oil other moving parts in the fifth wheel.
4.
Apply grease to the top plate. Spread grease all
over the mating surface of the top plate. Be sure
the grease pockets built into the top plates are
full of grease.
Holland FWS1
Apply a heavy coat of grease to the top plate, either
through the grease fittings located on the underside
of the top plate, or by direct application.
Holland FW35
1.
Using a water-resistant lithium-base grease,
grease the top plate.
2.
Using a light oil (such as SAE 10W or 20W
motor oil), lubricate the cam track and pivot. See
3.
Grease the yoke tips, locks, and the release
handle and spring; see
. Grease the
mounting bracket supports through the grease
fittings. A “low temp” grade grease rated for
-30°F (-34°C) or lower such as Cato Oil and
Frame and Frame Components
31
31/6
Grease #5213, Craftsman Chemical Co. #LTF 2,
Mystic LP-200, or equivalent is recommended.
Jost
Lubricate the kingpin lock using a hand pump grease
gun through the grease zerk on the skirt of the fifth
wheel; see
. Apply a light oil to all moving
parts. For sliding fifth wheels spray diesel fuel on the
slide path of the base plate.
NOTICE
Do not use a power grease gun. The pressure will
damage the lube line.
If the fifth wheel is not equipped with low-lube plates,
apply a lithium-based grease with extreme pressure
(EP) additive to the trailer contact surface of the fifth
wheel.
NOTE: If the fifth wheel is equipped with low-lube
plates, the top plate only requires lubrication at the
new product break-in stage. The low-lube plates re-
quire no further lubrication.
f310884
1
2
2
3
3
04/11/2011
1.
Pull Handle
2.
Jaw
3.
Wedge
Fig. 8, Fontaine Fifth Wheel
12/03/2010
f311136
1
Use a light oil (such as SAE 10W or 20W motor oil) to
lubricate the cam track and pivot.
1.
Cam Plate
Fig. 9, Holland FW35 Fifth Wheel, Oil Lubrication
12/03/2010
f311135
1
2
2
3
3
4
1.
Release Handle and
Spring
2.
Grease Fitting
3.
Yoke Tip
4.
Locks
Fig. 10, Holland FW35 Fifth Wheel, Grease Lubrication
Frame and Frame Components
31
31/7
31–03 Frame Fastener Torque
Check
Frame brackets and components secured with Huck-
bolt® fasteners do not require a torque check, how-
ever, they should be inspected for damage. Frame
brackets and components secured with conventional
bolts and nuts are to be checked at Initial Mainte-
nance (IM). Check the torque of frame fasteners to
offset the effects of "bedding in" (or seating). When
checking torque, torque the nut, not the bolt head
whenever possible. This will give a true torque read-
ing by eliminating bolt-body friction. When checking
the torque of frame fasteners, inspect the frame for
cracks and other damage. Set a click-type torque
wrench to the maximum torque of the fastener you
are checking. Apply pressure until the torque wrench
clicks. Do not loosen the bolt to check the torque.
Refer to Group 00 of the vehicle Workshop Manual
for torque specifications.
NOTICE
Make sure frame fasteners are properly tightened.
Continued vehicle operation with loose fasteners
could result in bracket or frame damage.
Check the fasteners at the following locations:
• Axle Stops
• Deck Plates
• Equalizer Brackets
• Exhaust Brackets
• Fifth Wheel Legs
• Fifth Wheel Mountings
• Frame Crossmembers and Gussets
• Front Frame Brackets
• Front Suspension Spring Brackets
• Fuel Tank Brackets
• Radius Rods
• Rear Suspension Spring Brackets
• Shock Absorbers
• All Other Frame Fasteners
Any component that shows signs of cracking or other
damage must be repaired or replaced. Refer to the
vehicle vehicle Workshop Manual for repair or re-
placement information.
31–04 Trailer Electrical
Connector Lubricating
In some cases, failure of trailer cables occurs due to
intrusion of chloride-based road deicing chemicals
into the trailer connector. Once inside the connector,
the chloride-based chemicals corrode the brass ter-
minals and create bridging between positive and
ground terminals.
NOTE: The use of soap is not recommended for
cleaning the electrical connector, as some
soaps may increase the corrosion process.
1.
Wash out any existing grease, dirt, and corrosion
on the trailer connectors with electrical contact
cleaner spray.
2.
Grease the trailer connector with a lithium-based
dielectric grease.
31–05 Premier 690 Coupling
Inspection
IMPORTANT: Before servicing the Premier cou-
pling, refer to the Premier web site at
for complete safety,
operation, and maintenance instructions.
WARNING
If at any time the 690 coupling is bound up (jack-
knifed), the 294 bolt MUST be replaced immedi-
ately! Do not use the coupling until the bolt has
been replaced. In addition, carefully inspect the
690 coupling, drawbar, drawbar eye, front end as-
sembly, and tail board for damage. Failure to do
so may result in trailer separation from the truck
while in use, resulting in serious personal injury
or property damage.
The time-in-service of the 294 bolt located in the 690
coupling must be monitored, and maintenance per-
formed as follows. See
For a new or replaced 294 bolt:
• Record the date of installation.
6 months after installation date:
Frame and Frame Components
31
31/8
• Remove the 294 bolt. Using dye penetrate or
magnetic particle testing along the length of the
bolt, inspect for fractures.
• If the 294 bolt has no damage, install it and
continue to use for another 6 months.
• If the 294 bolt is fractured, DO NOT USE. Con-
tact Premier Mfg. Co.
1 year after installation date:
• Regardless of service duty, replace the 294 bolt
with a new one.
1
2
3
f310313a
07/13/2010
4
1.
Linch Pin
2.
Handle
3.
Pintle Hook
4.
294 Bolt
Fig. 11, Premier 690 Trailer Coupling
Frame and Frame Components
31
31/9
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