Ditch Witch J20 Repair Manual -
If you cannot find the official manual, the Kubota D1105 engine manual is available for free from Kubota, and the Sundstrand Series 15 pump manual is available from Danfoss. However, the chassis and plow-specific repairs still require the Ditch Witch book.
There are several reputable websites that specialize in digitized heavy equipment manuals. When searching these sites, ensure you are buying a manual specific to your serial number range. Ditch Witch often updates designs between serial numbers, so a manual for a late-model J20 might not be accurate for an early-model one.
Symptoms: The engine runs fine, and the wheels drive, but the plow blade barely moves or shakes weakly.
Manual Solution: The repair manual guides you to check the hydraulic flow to the vibratory motor. Usually, the issue is a worn drive belt between the engine and the pump, or a stuck relief valve. The manual provides the exact belt tension deflection (usually 1/4 inch at mid-span) and the procedure to flush the vibratory motor without causing damage.
This section covers machine serial number breaks (important because Ditch Witch changed components over the years), standard torque charts for bolts, and specific safety decal locations.
If you cannot find the official manual, the Kubota D1105 engine manual is available for free from Kubota, and the Sundstrand Series 15 pump manual is available from Danfoss. However, the chassis and plow-specific repairs still require the Ditch Witch book.
There are several reputable websites that specialize in digitized heavy equipment manuals. When searching these sites, ensure you are buying a manual specific to your serial number range. Ditch Witch often updates designs between serial numbers, so a manual for a late-model J20 might not be accurate for an early-model one.
Symptoms: The engine runs fine, and the wheels drive, but the plow blade barely moves or shakes weakly.
Manual Solution: The repair manual guides you to check the hydraulic flow to the vibratory motor. Usually, the issue is a worn drive belt between the engine and the pump, or a stuck relief valve. The manual provides the exact belt tension deflection (usually 1/4 inch at mid-span) and the procedure to flush the vibratory motor without causing damage.
This section covers machine serial number breaks (important because Ditch Witch changed components over the years), standard torque charts for bolts, and specific safety decal locations.
