Fifth Wheel ARMOR ARMORLAK Manual de usuario

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

Locking Jaw in

Closed Position

Disassembly

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”

Disassembly

5 8

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

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”

Disassembly

10 12

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”

Assembly

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.

Fasten air cylinder bolt and tighten nut.

Air Cylinder bolt

Install operating handle bolt.

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”

Assembly

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

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”

Wear Plate

Bolts (8 total)

Assembly

Install both wear plates.

Close the ﬁfth wheel by pulling the main spring.

Main Spring

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).

Spring Tensioner

Spring

Tensioner

Spring

Tensioner

Nuts (2)

All kits include hardware

See video at ﬁfthwheel.com/maintenance/

Choose “Lock Assembly Replacement”

Install the cotter pin.

Connect the air hose to the air cylinder quick release valve.

Cotter Pin

Air Cylinder Quick

Release Valve

Assembly

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

Part # ARMORKPK

All kits include hardware

See video at ﬁfthwheel.com/maintenance/

Choose “Lock Assembly Replacement”

ﬁfthwheel.com • 800.874.9780

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.

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

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