Hydrostatic Drive

Symptom Problem Solution

Hydro lever will not go into forward or reverse.

Bent or broken parts in controls or linkages.

Repair or replace as required. See your John Deere dealer.

Linkages binding.

Frozen or worn ball joints or linkage.

Lubricate or replace.

System overheating.

Air passages in cooler core plugged.

Clean air core.

Fan belt slipping or broken.

Tighten or replace fan belt.

High oil loss.

Loose connections or leaking hydraulic lines.

Tighten connections or replace damaged lines.

Damaged O-ring at line connections or transfer tubes.

Replace O-ring.

Hydrostatic drive units leaking.

See your John Deere dealer.

NXL,7455,O2 -19-12MAR97-1/2


Symptom Problem Solution

Stripper will not propel forward or reverse. 1

Transmission out of gear or inoperative.

Check transmission or see your John Deere dealer.

Low on oil.

Check for leak and correct. Fill reservoir with oil.

Broken coupling from motor to transmission.

Repair as needed.

Air leak in system.

Tighten connections and hose clamps.

Linkage broken or loose.

Tighten loose linkage or replace as necessary.

Damaged U-joint from engine to pump.

Repair as needed.

Plugged oil filter.

Change filter element.

Exceeding relief valve pressure.

Shift to lower gear.

Drive system unable to build up pressure.

See your John Deere dealer.

Transmission hard to shift or will not shift.

Hydro lever not in neutral.

Move hydro lever to neutral or adjust gearshift linkage.

1 When operating in temperatures below -12.2°C (10°F), run-in stripper for 10-15 minutes to allow oil in hydrostatic drive system to warm up.

NXL,7455,O2 -19-12MAR97-2/2