HOUSING 1731789 - Caterpillar

Illustration 1 g00391154
The implement control valves are controlled by the implement control levers on the right side console.
Illustration 2 g00391152
The decal is located at the rear of the machine above the quick couplers for the hydraulic system.The implement control lever that is located toward the front of the machine is for the No. 1 implement control valve. See Illustration 2 for the direction of oil flow for the quick couplers for each implement control valve.
Always check the hydraulic system oil level before/after attaching remote hydraulic equipment. Add oil if needed to maintain the level at the "FULL" mark with all hydraulic cylinders in the work position.
Operation Of The Implement Control Levers
Illustration 3 g00391153
You can move the implement control levers in the following positions: HOLD, EXTEND, RETRACT and FLOAT.
Float (1) - Move the implement control lever all the way forward in order to place the implement control valve in the FLOAT position. When the implement control lever is in the FLOAT position, the implement cylinder extends or the implement cylinder retracts in order to follow the ground contour. The implement control lever will not automatically return to the HOLD position. Use the FLOAT position in order to retract a single-acting cylinder. Also, use the FLOAT position as the OFF position for hydraulic motors.
Do not hold an implement control lever in the extend or retract position for an extended period of time after a remote cylinder has reached the end of its travel. This places excess stress on hydraulic components and may lead to component failure.
Retract (2) - Push the implement control lever from the HOLD position to the RETRACT position and release the implement control lever in order to retract an implement cylinder. When the implement cylinder is completely retracted, the implement control lever returns to the HOLD position. Also, you can manually return the implement control lever to the HOLD position. Hold (3) - The HOLD position is used to hydraulically lock the implement circuit when you are not using the implement circuit.
Extend (4) - Pull back the implement control lever from the HOLD position to the EXTEND position and release the implement control lever in order to extend an implement cylinder. When the implement cylinder is completely extended, the implement control lever returns to the HOLD position. Also, you can manually return the implement control lever to the HOLD position. Float Lockout Device For The Implement Control Levers
Illustration 4 g00391155
Each implement control lever has a float lockout device (5). Use the float lockout device (5) in order to lock out the FLOAT position of the implement control lever.While the implement control lever is in the HOLD position, move float lockout device (5) to the right in order to block the FLOAT position.