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MAINTENANCE
INTERSTATER 02/11 Maintenance Section 5-22
© 2011 Alamo Group Inc.
MAINTENANCE
CONTROL CIRCUIT
Lift and Tilt Cylinders
Hydraulic cylinders change the position of the
cutter unit. The lift cylinder raises and lowers the
unit by changing
position of the lift frame. To lift unit, oil is supplied to
rod side of cylinder. Gravity lowers unit when lift
levers are in "DOWN" position.
The tilt cylinder changes the angle of the cutter
unit. Oil is supplied to both ends of the cylinder and
provides power to tilt the unit up or down. The
unit can be tilted to the full vertical position for
transport.
Disassembly or Lift or Tilt Cylinder
For part numbers and illustration, refer to the Parts Listing section.
1. Disconnect hoses at cylinder. Cap all hoses to prevent fluid contamination. Remove cylinder from unit.
2. Remove reducer bushing and snap ring which retains the rod guide. Remove rod guide, rod, and piston.
Remove guide and piston from rod.
3. Replace all "O" rings, back-up washers, and rod wiper. Inspect rod, guide, piston, and body for damage.
4. Clean inside of cylinder with mineral spirits. DO NOT wipe dry; air dry instead. Lint, dirt, and, grit can cause
immediate or premature failure.
5. Lubricate all parts with clean hydraulic oil and reassemble.
Cylinder Rod Maintenance
It is important to visually inspect the hydraulic cylinder rods daily before use. It is highly recommended that
while the machine is stored or getting very little use that a protectant is applied to the hydraulic cylinder rods to
prevent degradation. If the machine receives more frequent use, be sure to fully cycle each cylinder function so
that the cylinder rod is coated by the systems hydraulic fluid. Depending on your operating environment it may
be necessary, under normal operating conditions, to apply a protective lubricant to the cylinder rods for
protection against rust and pitting. Hydraulic fluid may provide a suitable amount of protection, but remember
any protectant can attract dust and debris so attention must be given to the cylinder rods daily. Also remember
that any other protectant must be compatible with hydraulic fluid. Alamo Industrial is not responsible for rust or
pitting of the cylinder rod due to weather exposure or impacts from normal operation or mounting. If hydraulic
cylinders and or the cylinder rods are damaged as a result of the rods rusting or pitting, the hydraulic cylinders
and rods will not be covered under warranty by Alamo Industrial.
Lift Cylinder (3-1/4” O.D.)
Tilt Cylinder (3-3/4” O.D.)