This Gehl service manual covers the 153, 193, and 223 compact excavators, the mini excavators built with Yanmar 3TNE68, 3TNE74, and 3TNV76 diesel engines. Publication 918161 Revision A, it runs 124 pages and is organized by chapter for fast reference during a repair.Coverage moves from technical data and lift capacity charts through maintenance schedules, the full hydraulic system, the diesel engine, electrical wiring, operating elements, and a torque specifications chapter. You get the numbers a job depends on, including main and pilot pressures, track tension clearance, cylinder head and connecting rod torque, swivel motor torque, and fuel and hydraulic capacities.Whether you are servicing the undercarriage, rebuilding a valve block, tracing a wiring fault, or setting hydraulic pressures, this manual gives owners and independent mechanics the procedures and specifications to keep a 153, 193, or 223 working.
What's Inside This Gehl 153, 193, 223 Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Data | 5-32 | Primary Dimensions, Bucket & Geometry, Lift Capacity Charts, Hydraulic System, Tightening Torques |
| Maintenance | 33-51 | Maintenance Schedule, Lubricants, Hydraulic System, Hydraulic Pump, Hose Burst Protection, Drive Unit, Swivel Unit, Auxiliary Hydraulic System |
| Hydraulics | 52-97 | Hydraulic Diagram, Hydraulic Pump, Pilot Oil Supply Unit, Main Valve Block, Dozer Blade Valve, Pilot Control Valves, Swivel Unit, Drive Unit |
| Diesel Engine | 98-101 | Diesel Engine Overall, Fuel Supply Line (Fuel Injector Valves, Fuel Injector Pump, Non-Return Valve, Throttle, Main Fuel Filter, Fuel Pump, Water Separator, Fuel Tank) |
| Electrical | 102-111 | Electrical Diagram Legend, Cab Wiring, Diesel Engine Wiring, Chassis Wiring, Connection Cable Wiring, Relay Box Relay Arrangement, Fuse Box |
| Operating Elements | 112-120 | Major Components, Cab Equipment and Controls, Instrument Panel, Towing the Compact Excavator, Lifting the Compact Excavator, Tilting the Superstructure, Undercarriage Telescoping |
| Torque Specifications | 121-124 | Hydraulic Fittings with Various Seals (Straight Pipe Fitting with Thread and Screwed Plug, Non-Return Valve with Elastic Seal, Identification Aid Outside Ø) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track Roller bolts torque | 47.2 lb-ft. (64 Nm) | p. 31 |
| Metric hose joint (Light Version DKOL) M12 x 1.5 screw torque | 11 lb-ft. (15 Nm) | p. 28 |
| Hose Burst Protection Valve Clearance S for Dozer Blade Cylinder | 0.039" (1 mm) | p. 22 |
| Swivel Unit bolts torque | 88.5 lb-ft. (120 Nm) | p. 31 |
| Fuel Tank capacity | 25.4 qt. (24 L) | p. 25 |
| Engine Oil—Oil Pan (Maximum/Effective) capacity | 2.5/1.05 qt. (2.4/1.0 L) | p. 25 |
| Valve Clearance (IN=OUT) | 0.006—0.010" (0.15—0.25 mm) | p. 24 |
| Glow Plug (M10 x 1.25) torque | 11—15 lb-ft. (15—20 Nm) | p. 25 |
| Maximum allowable pressure drop for Primary Pressure Limiting Valves | 10% of the setting | p. 39 |
| Hydraulic Oil Tank Capacity | 5.5 gal. (21 L) | p. 20 |
| Engine Oil Capacity (Oil Pan Maximum/Effective) | 2.5/1.05 qt. (2.4/1.0 L) | p. 25 |
| Main Pressure Limiting Valve (P1, P2) Pressure | 2900 ±44 psi (200 ±3 bar) | p. 20 |
Gehl 153, 193, 223 Common Problems This Manual Covers
Hydraulic functions weaken or stall
Hydraulic functions that weaken, stall, or become erratic are the most common complaint on these excavators, often from low or contaminated fluid, pump wear, or valve issues. The Hydraulics section covers the pump, main valve block, and pilot control valves.
Manual Section: Hydraulics p. 52Diesel engine hard start or low power
A Yanmar diesel that starts poorly, runs rough, or loses power usually points to the fuel system or engine itself. The Diesel Engine section covers the fuel injectors, injection pump, filters, and water separator.
Manual Section: Diesel Engine p. 98Electrical or fuse box faults
Intermittent electrical trouble means checking the wiring, relays, and fuses. The Electrical section provides the diagram legend, cab and chassis wiring, relay arrangement, and fuse box layout.
Manual Section: Electrical p. 102Loose or uneven track tension
Compact excavator tracks lose tension and wear, which hurts travel and steering. The Maintenance section includes the undercarriage and track tension clearance so you can set it correctly.
Manual Section: Maintenance p. 33Weak or slow slew rotation
Slow or weak upperstructure rotation traces to the swivel unit and its motor. The Hydraulics section covers the swivel unit and swivel joint for testing and rebuild.
Manual Section: Hydraulics p. 52Clogged fuel filter or water separator
Poor fuel filtration causes rough running and stalling on the diesel. The Diesel Engine section covers the main fuel filter, fuel pump, and water separator in the fuel supply line.
Manual Section: Diesel Engine p. 98Frequently Asked Questions
Which models does this manual cover?
It covers the Gehl 153, 193, and 223 compact excavators, built with Yanmar 3TNE68, 3TNE74, and 3TNV76 diesel engines. The manual is publication 918161 Revision A and runs 124 pages.
Does it include torque specifications?
Yes. The Torque Specifications chapter details hydraulic fitting torques with various seals, and the technical data chapter lists cylinder head, connecting rod, swivel motor, and track roller torque values. p. 121
Are hydraulic diagrams included?
Yes. The Hydraulics section opens with the hydraulic diagram and then covers the pump, pilot oil supply, main valve block, dozer blade valve, and pilot control valves. p. 52
Does it cover diesel engine repair?
Yes. The Diesel Engine section covers the engine overall and the full fuel supply line, including injectors, injection pump, filters, water separator, and fuel tank. p. 98
Does this Gehl 153, 193, 223 Service Manual cover the hydraulic system?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the Gehl 153, 193, 223.
Is this Service Manual a digital download?
A 124-page Service Manual in searchable PDF, ready the moment checkout completes. Open it on a computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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