Selective-Control-Valve Lever Stop (30-60 Series Row Crop Tractors)

IMPORTANT: Damage to vacuum pump motor may occur if operated without lever stop (A).

Operation of vacuum meter hydraulic system requires continuous hydraulic system flow. A selective-control-valve (SCV) lever stop must be used to prevent selective-control-valve (SCV) lever from returning to neutral position.

Pump motor will operate when SCV lever is in forward (detent) position. To shut off pump motor, move lever forward into FLOAT position.

Flow control valve must be plugged into retract port on tractor SCV.

To install SCV lever stop, proceed as follows:

A-Lever Stop

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1. Push SCV lever (A) forward against float stop (B).

2. Measure dimension (C).

3. Cut rubber stop to dimension (C).

A-SCV Lever
B-Float Stop
C-Dimension

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4. Insert rubber stop (A) in slot behind selective control lever with V-groove side down.

5. If rubber stop is not correct length, the SCV could have a high-pressure leak to the hydraulic return.

6. Check by moving lever from FLOAT to running position (against stop A) with vacuum pump motor DISCONNECTED from tractor. Tractor hydraulic system should not make any noise when lever is in run position.

If hydraulic pump activates, stop is not cut to correct length. Trim stop (A) until no noise is heard.

A-Rubber Stop

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