TCM FB10-7, Service Manual

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7. HYDRAULIC SYSTEM
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7.1.6 TILT CYLINDER
The tilt cylinder is a double-acting type. The piston rod end is supported by the mast, and the
cylinder tail by a pin on the frame. Two tilt cylinders are mounted on both sides of the truck, one at
each.
The tilt cylinder consists of a cylinder body, cylinder cap, piston and piston rod. The piston is
attached to the piston rod with a nut, and is provided with two packings and one wear ring on its
circumference. It is slid by hydraulic oil along the inner surface of the cylinder.
The cylinder cap is provided inside with a press-fitted bushing, packing, and dust seal which provide
oil tightness for the piston rod and in the cylinder cap, and also supports piston rod.
When the tilt lever is pushed forward, high-pressure oil flows into the tilt cylinder through its tail.
The oil then moves the piston forward, high-pressure oil flows into the tilt cylinder through its tail. The
oil then moves the piston forward, causing the mast to tilt forward by 6 degrees.
When it is pulled toward the operator, high-pressure oil enters the tilt cylinder from the cylinder cap
side. The oil then pushes back the piston, causing the mast to tilt backward by 12 degrees.
1. JOINT
2. DUST SEAL
3. BUSHING
4. “O”-RING
5. PACKING
6. CYLINDER CAP
7. “O”-RING
Fig. 7.15 Tilt Cylinder
8. LOCK RING
9. ROD
10. CYLINDER
11. PACKING
12. PISTON
13. LOCK NUT