freightliner Argosy COE - Page 64

7.3 Install the fifth wheel top plate, bushing
pins, and roll pins.
8. Inspect for fatigue or cracked welds.
9. Replace cracked, worn, or damaged parts with
new parts. Replace all loose mounting bolts with
5/8–11 SAE grade 8 bolts, grade C locknuts, and
hardened washers.
Do not re-use bolts, nuts,
and washers on fifth wheel mountings.
10. After inspecting the fifth wheel, lubricate all mov-
ing parts with a chassis or multipurpose grease.
See Maintenance Operation 31–02 for lubrica-
tion instructions.
Castloc II and Simplex Series
1. Disconnect the tractor from the trailer. For in-
structions, see the vehicle driver’s manual.
2. Thoroughly steam clean the fifth wheel.
3. Check the fifth wheel plate for cracks. Check for
sharp edges on top; the chamfer should be 1/8
to 1/4 inch (3 to 6 mm).
4. When the wheel is locked, the safety latch must
swing free and fall freely into position. See
Fig. 3.
f310476
09/18/95
1
2
3
4
5
6
7
6
8
1
9
10
11
12
3
4
1
2
18
13
14
15
14
16
17
1
21
21
21
22
23
23
24
25
26
20
19
1. 3/16" x 1" Cotter Pin
2. Lower Bracket Retainer Pin
3. Grease Fitting
4. Lower Bracket Pin
5. Wedge Stop Rod
6. Flatwasher
7. Wedge Stop Rod Spring
8. Wedge Stop Rod Nut
9. Side Release Upper Assembly
10. Leaf Spring
11. 1/4–20 x 3/8" Thread-Cutting
Screw
12. Step Jaw and Wedge
13. Jaw Spring
14. 1/4" x 3" Cotter Pin
15. Timer
16. Wedge Spring
17. Pull Handle
18. Bumper Handle Spring
19. 1/2–13 x 2" Bumper Pivot Bolt
20. Bumper
21. Flatwasher
22. 5/16" Bumper Pivot Bushing
23. 1/2–13 Locknut
24. 7/16" Handle Pivot Bushing
25. Operating Handle (side-release
only)
26. 1/2–13 x 2" Handle Pivot Bolt
Fig. 1, Fontaine H5092 Series Fifth Wheel (left-side-release shown)
Frame and Frame Components31
Century Class Trucks Maintenance Manual, January 200731/2