Milton CAT 390D L - Manual (Page 7)

7
Structures
Rugged and durable for many applications
Variable Gauge Undercarriage
The long variable gauge undercarriage is standard, providing a wide, stable base for operating
or a narrow gauge for reduced shipping width. Changes to the 390D L undercarriage include:
• Improved track link to reduce and avoid stresses
• Improved carrier rollers to reduce the risk of leaking lubrication oil
• Improved forged idler for added durability in severe underfoot conditions
• Positive Pin Retention 2 (PPR2) to prevent pin movement
Counterweight
The 390D L has two counterweights available – both heavier to accommodate the reinforced
front linkage.
Catwalks
Slip-resistant catwalks are 500 mm (19.5 in) wide and stretch the length of the machine to safely
provide access to major service points.
Track Roller Frame
The thick, steel-plated track roller frame is welded into a box structure, which provides increased
rigidity and impact resistance.