OPERATION
Problem | Possible Cause | Remedy |
Cylinder Rod Came Out | Piston Nut backed off of | Improper retaining of nut, replace or rebuild as |
of Cylinder | the Rod | required |
| Relief Valve setting Too | Test relief valve and adjust or replace as |
| High | required |
Deck Cracks | Operator abuse | Overloading cylinder in the extend position |
Severe Use or Abuse | Excessive ground speed, Overload or impact | |
|
| with solid objects |
| Vibration | Blades or blade bar bent, or blade missing |
Deck Worn On | Poor or missing welds | Manufacturing defect |
Mowing over sand or rocks | Operator abuse | |
Underside (Cutting |
|
|
Head Only) | Abusive operation, | Operator abuse |
| ||
| mowing heavy debris |
|
| Normal operational wear | Normal wear over time can result in cracks or |
|
| damage. Check deflectors and guards. |
|
| Replace as required. |
Hydraulic System Noise | Restrictions to oil flow in | Identified by concentration of heat, due to Line |
(Squeal) | the system | restriction bent hoses or contamination. |
| Relief Valve Malfunction | Relief setting too low, will result in generation of |
|
| heat, Adjust or replace as needed. |
| Cavitation | induction of air into the system due to leakage |
Hydraulic System | Wrong Oil Used | Flush and refill as required |
Excessive Engine RPM | Engine RPM should not exceed 540 PTO | |
Overheating |
| speed as indicated on the tractor tachometer |
| Restriction in Hydraulic | Identified by a concentration of heat due to |
| System | crimped hydraulic line, relief valve failure or |
|
| contamination. |
| Relief Valve Set too low | Test and adjust or replace as required |
| Internal Leakage due to | Test pump and motor. Replace or repair as |
| wear | required |
| Excessive Pump or Motor | Test pump and motor. Replace or repair as |
| Wear | required |
| Wrong Oil | Flush and refill as required with proper oil |
| Abusive Operation (Heavy | Operator abuse |
| Material or debris) |
|
Motor Flange or Motor | Excessive Torque load | Impact with solid objects or excessive loading |
Housing Breaking | due to abuse | of mower due to high ground speed. |
| Loss of Bolt torque at | Due to excessive loading. Check bolts daily, |
| flange or at motor section | and replace or repair as required |
1900 07/11 | Operation Section |
© 2011 Alamo Group Inc.
OPERATION
