t h e filler plug. Oil
4-79. The undercarriage rubber bushings should be
examined every 2,000 miles for breaking and signs
should be changed at 50,0~ miles or with brake re-
D i s c wheels; and broke
drums should be carefully examined for cracks every
D o not allow these areas to become
4-77. UNDERCARRIAGE AND WHEELS.
e x c e s s i v e l y worn or expensive repairs will be re-
4 - 7 8 . The undercarriage should be visually exam-
ined for broken and missing parts. Check brackets,
adiusting screws, and walking beam ends. Replace
4-81. The frame should be checked daily for crack-
Check disc wheel mounting for tightness
e d welds, failing steel members, cracked decking.
4-82. Structural cracks will usually show best when
specifications and tiqhteninq sequence.
the trailer is loaded. Structural repairs should only
be attempted by persons experienced in this field.
4 :8 3 . Failure to maintain decking in good shape
may cause damage to crossmembers.
4-87. HP SERIES TILTING PLATFORM PINS.
FIGURE 4-18. STEMCO HUB CAP.
FIGURE 4-17. TIGHTENING SEQUENCE
OF DISC WHEELS.