TST20
30500-T-DOLLY-WEB-R7.pdf
- Rev
- R7
- Pages
- 28
- Parts
- 0
Assemblies
Service Procedures
Release Jam Nut (refer to View B-B)
Pull the lever into the uncoupling position.
Place dolly under a trailer. Set brakes on trailer and dolly.
Remove lever (17)
Make sure the jaw is closed. If not, it can be closed by pushing the trip block (26) forward with a rod or bar. The jaw should be
Install new lever
Using a pair of vise grips, clamp the trip lock rod in front of the guide hole on 5th wheel center casting (15) so as to prevent it from
Remove safety wire if present, on 1283 nut.
This is where the lever is pulled out and held
Tighten bolt until lever is secure against Jaw
Test the 5th wheel for proper coupling with a
Remove the 3/8 bolt, 3/8 lock nut and the two 3/8 washers
Remove the trip block (26) and the trip block spring through the
If the lever won’t stay up, the adjuster nuts on
With the jaw closed or in the coupled position,
Loosen bolt ¼ turn or until assembly moves
When removing the guide bolt (23), applying an anti-seizing compound to the exposed threads often makes the removal process
Remove 1283 nut and 1193 washer or 15315 and 15660
Remove the jaw spring (22) by pulling it through the push rod guide nut.
While holding bolt secure from turning, tighten
Use pliers or another suitable devise to remove old trip block and spring.
When 5th Wheel functions properly, tighten
Use forklift or eye removal tool (Silver Eagle part no. 15314) to pull against drawbar eye and remove it from the shock housing.
Clean any debris from inside of shock absorber bushing and lubricate with rubber lubricant or soapy water
Pull the fifth wheel lever (17) all the way out.
Install the new trip block and / or trip block spring in the throat of the
Use pliers or another suitable devise to install new trip block and spring.
Disconnect the fifth wheel lever (17) from the jaw/pushrod assy (25).
Lubricate the shock absorber bushing with rubber lubricant or soapy water and install into the shock housing.
Push the trip block (26) as far forward as possible, with a rod or bar
Remove the jaw/pushrod assy (25) from the 5th wheel table.
Lubricate the shank of the new drawbar eye with rubber lubricant or soapy water and install into the shock housing.
Lubricate and install the replacement jaw/pushrod assy (25) in the 5th wheel table making sure the pointed tine on the jaw is to aft
After the drawbar eye is in place, clean the threads on the shank. VERY IMPORTANT: Coat the threads with Never-SeeZ, pipe
With anti-seize applied to the 3/8 bolt, reinstall the bolt, two washers
There are three methods of pushing it in the final amount:
(1) Place the dolly under a trailer or up against a sold wall. Set the brakes on the trailer and dolly. Use a forklift or hostler to push
Slide jaw/pushrod assy in place without spring. Align hole in jaw with mating hole in lever.
Install a new washer and thread the nut onto the shank.
Tighten the nut until the rubber shock absorber bushing bulges toward the outer edge of the shock housing at the corners – this is
Apply loctite 242 medium strength thread adhesive or equivalent to cleaned threads of capscrew (16) and jam nut.
Install the safety/ground wire through one side of the nut and shank. This is accomplished by drilling through one side of the nut
Thread capscrew (16) into jaw/pushrod assy (25) with two washers (7) between the capscrew head & the lever. Torque the jaw
Periodically check the tightness of the nut and adjust as necessary. You should not be able to turn the lunette eye by hand at any
Tighten the jam nut (1/6-1/4) turn – after contacting the jaw while ensuring the capscrew does not turn.
Slide pushrod spring (22) on push rod of the jaw.
FOR THESE REPLACEMENT PARTS
FOR THESE REPLACEMENT PARTS
While holding lever back far enough so the jaw pushrod protrudes
Remove the vise grips from the trip block rod.
FOR THESE REPLACEMENT PARTS
Test the 5th wheel table to ensure the jaw opens and closes properly.
FOR THESE REPLACEMENT PARTS
FOR THESE REPLACEMENT PARTS
FOR THESE REPLACEMENT PARTS
