74 Troubleshooting
PUMP NOISE IS EXCESSIVE
(Note: All pumps make a certain amount of noise)
Possible cause Remedy
Pump starving for fluid Open ball valve.
Check fluid level.
Check hydraulic fluid filter and tank.
Check for obstruction in suction lines, hoses
kinked or collapsed.
Hydraulic fluid too cold Bring fluid to normal operating temperature.
Change hydraulic fluid to proper grade for
operating conditions (see Leach Hydraulic
Fluid Recommendation on page 42).
PTO driveshaft and/or u-joints badly
worn or out of balance
Repair, replace and/or balance all parts.
Pump gears, end plates, bearings, etc.
badly worn
Replace pump.
Improper grade of hydraulic fluid (fluid
foaming)
Replace with proper grade of hydraulic fluid (see
Leach Hydraulic Fluid Recommendation on page 42).
Air entering the system Tighten the suction hose.
Replace the pump shaft seal.
Replace the suction hose.
Replace the o-rings on the pump.
Tighten or repair any leaks in the hydraulic
system.
ENGINE WILL NOT SPEED UP WHEN CARRIER PANEL LEVER
OR SPEED-UP BUTTON IS ENGAGED
Possible cause Remedy
Short in electrical wiring Repair broken wire. See Electrical System on
page 156.
Blown fuse on speed-up relay Replace fuse and check electrical system for shorts.
See Electrical System on page 156.
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