Motor Cargo 14458 Parts Book.pdf

Make sure the jaw is closed. If not, it can be closed by pushing the trip block

(cid:190) Install new lever

Place dolly under a trailer. Set brakes on trailer and dolly.

With vehicle at rest in a relaxed condition and landing gear down, (not being

Release Jam Nut (refer to View B-B)

Pull the lever into the uncoupling position. This is where the lever is pulled out and held up by the “Catch Point”

Make sure jaw is locked open and trailer is at

(cid:190) Remove lever (19)

Inspect springs for broken leaves and missing or broken

Tighten bolt until lever is secure against Jaw assembly.

(cid:190) Remove the 3/8 bolt, 3/8 lock nut and the two 3/8 washers

Back dolly slowly under trailer until jaw locks kingpin and handle moves to the

Using a pair of vise grips, clamp the trip lock rod in front of the guide hole on

Remove safety wire if present, on 1283 nut.

Pull dolly slowly out from under the trailer.

Test the 5th wheel for proper coupling with a test kingpin. Test with the lever in the uncoupling position. If it doesn’t

(cid:190) Remove the trip block (16) and the trip block spring through the

If the handle will not pull outward when the vehicle is in a relaxed condition, use

Inspect drawbar eye assembly and tighten shank nut (Item 14)

With the jaw closed or in the coupled position, pick the lever up and out of the locked position. Hold the lever just shy of

Loosen bolt ¼ turn or until assembly moves freely.

When removing the guide bolt (25), applying an anti-seizing compound to the

Remove 1283 nut and 1193 washer or 15315 and 15660

First 50 - Consult wheel maintenance instructions. Check wheel nut

Remove the jaw spring (22) by pulling it through the push rod guide nut.

Use forklift or eye removal tool (Silver Eagle part no. 15314) to pull against drawbar

(cid:190) Install the new trip block and / or trip block spring in the throat of the

Tighten all other fasteners as required. Replace any worn,

While holding bolt secure from turning, tighten jam nut.

When 5th Wheel functions properly, tighten the lever adjuster locknut securely.

Clean any debris from inside of shock absorber bushing and lubricate with rubber

Every Check axle maintenance instructions. Check axle for oil levels

Inspect all air lines and electrical cables for chafing, kinking,

Pull the fifth wheel lever (19) all the way out.

(cid:190) Push the trip block (16) as far forward as possible, with a rod or bar

(cid:190) With anti-seize applied to the 3/8 bolt, reinstall the bolt, two washers

Lubricate the shock absorber bushing with rubber lubricant or soapy water

First 5,000 1) Tighten the fifth wheel/leaf spring U-bolts to 375 lbs/ft torque.

Torque: 375 lbs/ft

Inspect fifth wheel table assembly for bent, worn, cracked or

Disconnect the fifth wheel lever (19) from the jaw/pushrod assy (18).

Remove the jaw/pushrod assy (18) from the 5th wheel table.

Lubricate the shank of the new drawbar eye with rubber

Lubricate and install the replacement jaw/pushrod assy (18) in the table

After the drawbar eye is in place, clean the threads on the shank.

Install a new washer and thread the nut onto the shank.

Slide jaw/pushrod assy in place without spring. Align hole in jaw with mating

Tighten the nut until the rubber shock absorber bushing bulges toward

Apply loctite 242 medium strength thread adhesive or equivalent to cleaned

Install the safety/ground wire through one side of the nut and shank. This is

Thread capscrew (23) into jaw/pushrod assy (18) with two washers (20)

Tighten the jam nut (1/6-1/4) turn – after contacting the jaw while ensuring the

Periodically check the tightness of the nut and adjust as necessary.

Slide pushrod spring (22) on push rod of the jaw

While holding lever back far enough so the jaw pushrod protrudes

Remove the vise grips from the trip block rod.

Test the table to ensure the jaw opens and closes properly.