Raymond® Walkie Pallet Truck Maintenance Manual
Component Procedures Lift-Limit Switch
Lift-Limit Switch When the forks are fully raised, the lift-limit switch (SW10) turns the hydraulic pump motor off. This keeps the pump from trying to extend the lift cylinder beyond its maximum travel. See Figure 6-17.
Lift-Limit Switch
Adjustment 1. Raise the forks until they reach their fully raised position. If the lift-limit switch does not shut the pump down when the lift cylinder reaches its upper limit, the relief valve on the hydraulic pump will make a high-pitched squeal, indicating that the relief valve is opening.
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Figure 6-17: Lift-Limit Switch
2. Turn the key switch OFF and disconnect the battery. 3. Loosen the bolt and slide the switch bracket up or down to activate (cut power off) when the lift is 1/2 to 1 in. (12.7 to 25.4 mm) before its fully raised position. 4. Tighten the bolt. 5. Reconnect the battery and turn the key switch ON. Lower the forks and then raise them until they reach their fully raised position. The lift-limit switch should cut power off to the pump when the lift cylinder reaches 1/2 to 1 in. (12.7 to 25.4 mm) before its fully raised position.
PDMM-0100 Issued: 5/21/01
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