Fifth Wheel ARMOR ARMORLAK User manual

1
fifthwheel.com • 800.874.9780
Lock Assembly Kit Replacement Instructions
Lock Assembly Kit (ARMORLAK)
All kits include hardware
• Keep hands away from throat
of operating fifth wheel
• Wear Personal Protective
Equipment (PPE)
• Make sure the wheel is
disarmed before maintenance
• Follow all instructions
• Read operating manual
before use
• Use proper procedures
• Use proper tools
Warning!
For instructional video scan or go to
fifthwheel.com/maintenance/
Lock Assembly Kit Video available at:
fifthwheel.com/armor
Choose “Training” then “Lock Assembly
Replacement”
Lock Assembly Kit
Part # ARMORLAK
Standard Repair Time:
1 Hour
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”
Item Description Quantity
1Stationary jaw 1
2Locking jaw 1
3Torsion spring 1
4Trigger 1
5Secondary lock 1
6Operating handle 1
7Main spring 1
8Spring tensioner 1
9Cover plate 1
Tools Required
Crowbar
Pliers
3/4" deep well socket
with 2" extension
9/16" socket
11/16" socket
1/4" allen wrench
Kingpin tool
Personal Protective
Equipment
Safety glasses
Work gloves
Steel toe boots
All parts are
pre-assembled
in trigger
assembly kit.
Locking Jaw
Stationary Jaw
Secondary
Lock
Trigger
Main Spring
Torsion
Spring
Operating Handle
Spring Tensioner
Cover Plate

2
Locking Jaw in
Closed Position
Disassembly
1
24
3
Trip the wheel closed using a crowbar. NEVER use hands to
trip an activated fifth wheel.
Hint: A fifth wheel is closed when the locking jaw is
completely across the throat of the fifth wheel.
This deactivates the fifth wheel and allows the user to
perform maintenance.
Raise the yard truck boom for easy access, then remove the
air hose from the air cylinder quick release valve.
Tilt the top plate down to access the two front bolts from the
opposite side of the top plate. Remove the eight wear plate
nuts and washers. Note all eight nut locations in photo.
Remove two spring tension by removing the cotter pin with
pliers. Then remove the two spring tensioner nuts. Hint: You
can place a screwdriver in the main spring loop to prevent
spring from rotating when unbolting nuts (see video).
Cotter Pin
Wear Plate
Bolts (8 total)
Spring Tensioner
Nuts (2)
Air Cylinder Quick
Release Valve
Hint: If you need help with parts identification see pages 9-11.
All kits include hardware
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”

3
Disassembly
5 8
9
Remove both wear plates. Remove both cover plate nuts.
Unscrew knockout rod until it clears the stationary jaw.
Push up cover plate to access the two cover plate nuts.
Remove cover plate from below.
Wear plate
Cover Plate
Nut
Knockout
rod bolt
Wear plate
Cover Plate
Nut
6
7
Tilt wheel down in rear to access secondary lock.
Pull the secondary lock to open the fifth wheel.
Pull the locking jaw out of the top surface of the wheel.
Notice locking jaw is now visible because wear plate is off
and fifth wheel is in open position.
Locking Jaw
Secondary Lock
Cover Plate
All kits include hardware
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”

4
Disassembly
10 12
13
14
Unfasten the four stationary jaw nuts starting with the two
rear nuts toward the toes.
Helpful hint: Keep the bolt from turning using a 1/4" allen
wrench from below.
Remove operating handle nut and bolt.
Remove air cylinder/secondary lock bolt.
Remove trigger assembly.
Trigger Assembly
Remove stationary jaw.
Start with
these two
Stationary Jaw
All kits include hardware
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”
11

5
Assembly
1
Insert new trigger assembly into top plate.
All kits include hardware
Fasten air cylinder to the correct secondary lock bolt hole.
Outside hole in secondary lock is for manual operation. Inside
hole is for the air cylinder bolt.
Proper secondary
lock bolt hole
Do not use this
outside bolt hole
Position secondary
lock between air
shaft bolt holes.
2
Fasten air cylinder bolt and tighten nut.
Air Cylinder bolt
3
Install operating handle bolt.
4
Install stationary jaw.
Fasten the four stationary jaw nuts starting with the two rear
nuts toward the toes.
Start with
these two
Helpful hint: Keep the bolt from turning using a 1/4" allen
wrench from below.
Stationary Jaw
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”

6
Assembly
5
6
Turn in the knockout rod all the way until it bottoms out.
Install lock washers before installing new cover plate.
Make sure cover plate is orientate properly with the angled
side pointing towards you.
Fasten the two cover plate nuts and bolts.
Knockout
rod bolt
Cover Plate
7Cover Plate
Nut
Cover Plate
Nut
All kits include hardware
8
9
Position the jaw pin into the slot of the operating handle.
Trip the trigger off the stationary jaw stop. It pushes in.
Locking Jaw Pin
Trigger
Operating Handle
Slot
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”

7
Wear Plate
Bolts (8 total)
Assembly
11
Install both wear plates.
10
Close the fifth wheel by pulling the main spring.
Main Spring
12
Install the eight wear plate nuts and washers. You can tilt fifth
wheel up and down for easy access. Note all bolt locations in
photo.
Insert the spring tensioner through the hole.
Install the TWO spring tensioner nuts. Hint: You can place a
screwdriver in the main spring loop to prevent spring from
rotating when bolting on nuts (see video).
13
Spring Tensioner
Spring
Tensioner
Spring
Tensioner
Nuts (2)
All kits include hardware
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”
14
15
Install the cotter pin.
Connect the air hose to the air cylinder quick release valve.
Cotter Pin
Air Cylinder Quick
Release Valve

8
Assembly
16
Tilt the fifth wheel down and lower the yard truck boom.
Test the wheel using the Fontaine kingpin tool (ARMORKPK)
by frequently opening and closing the fifth wheel (see video).
Test Kingpin Tool
Test Kingpin Tool
Part # ARMORKPK
All kits include hardware
See video at fifthwheel.com/maintenance/
Choose “Lock Assembly Replacement”

9
fifthwheel.com • 800.874.9780
6
7
13
8
9
14
15
12
10
11
16
2
3
4
5
1
1
Part Identification
Item Description Quantity Included in kit
1Wear plate 2ARMORWPK
2Knockout rod 1ARMORKRK
3Knockout rod clip 1 ARMORKRK
4Knockout rod spring 1ARMORKRK
5Knockout rod nut 1 ARMORKRK
6Stationary jaw 1 ARMORSJK, ARMORLAK
7Locking jaw 1 ARMORJRK, ARMORLAK
8Torsion spring 1ARMORTAK, ARMORLAK, ARMORSRK
9Trigger 1ARMORTAK, ARMORLAK
10 Secondary lock 1ARMORTAK, ARMORLAK
11 Operating handle 1ARMORTAK, ARMORLAK
12 Main spring 1ARMORTAK, ARMORLAK, ARMORSRK
13 Spring tensioner 1ARMORTAK, ARMORLAK, ARMORSRK
14 Air cylinder 1ARMORACK
15 3-way air valve 1 ARMORACK
16 Cover plate 1 ARMORTAK, ARMORLAK, ARMORCPK
Parts 8-13 are
pre-assembled in kit.

10
fifthwheel.com • 800.874.9780
Part Identification – Bottom View
Air
Cylinder Main Spring
Knockout rodSerial Number
Three way
air valve
Knockout rod nut
Stationary
Jaw Tertiary lock (for use outside
private yard)
Cover Plate
Secondary
Lock
Manual Overide
Pull Handle Hole.
Also used for
tertiary locking.
Operating HandleTorsion Spring Wear Plate
Trigger
Locking Jaw
(Behind air cylinder)
28th fifth wheel
manufactured in
September, 2014
Month
Sequence of
Month Above
Year
Example serial number
09140028

11
fifthwheel.com • 800.874.9780
©2016 • Fontaine Coupling Solutions • 7574 Commerce Circle • Trussville, AL 35173 • LIT-013 • October 2016
Wear Plates (removable
for easy maintenance)
Locking jaw access (under
wear plate). Locking jaw slides
in for easy maintenance.
Stationary
Jaw Locking Jaw
Air cylinder bolt access
(under wear plate)
Knockout rod access (under
wear plate). Slot for easy
knockout rod maintenance.
Part Identification – Top View