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Part of the John Deere Repair Manuals.
This 242-page John Deere 204K, 304K Repair Manual (OEM #TM12988) breaks down every group in the loader's driveline, from axle and hydrostatic transmission repair to the Group 3160 Loader hydraulic system, covering the 2013-2018 build years. Inside you get full teardown procedures for the operator's station, service brakes, and steering hydraulics, plus a dedicated torque section and fluid capacity charts you can trust when you're buttoning things back up. Specs are pulled straight from the source: torque the Nominal Dia 8 T-Bolt to 29 N-m (21 lb-ft), and give O-ring seal fittings that 1/4 to 1/3 turn past hand-tight instead of eyeballing it. No more flipping through a shop binder held together with tape while your loader sits idle. This PDF is bookmarked by group and fully searchable, so you can jump straight from the table of contents to the exact procedure, pull it up on your phone, and get the axle or transmission job done right the first time.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Manual Identification, Read This First! | 5-8 | Product Serial Number Identification, Pin Plate Location, Pin Identification Table, World Code, Machine Model Identifier, Manufacturing Year Code |
| General Information | 9-44 | Safety Information, Recognize Safety Information, Follow Safety Instructions, Operate Only If Qualified, Wear Protective Equipment, Avoid Unauthorized Machine Modifications |
| Wheels | 45-48 | Wheels and Fasteners |
| Axles and Suspension Systems | 49-57 | Axle Shafts and U-Joints, Axle Shaft, Bearings, And Rear Axle Reduction Gears |
| Transmission | 58-70 | Hydrostatic Components Removal and Installation, Hydrostatic Components Repair |
| Engine | 71-79 | Engine Removal and Installation |
| Engine Auxiliary Systems | 80-94 | Cooling System, Intake System, External Exhaust System, External Fuel Supply Systems |
| Damper Drive | 95-97 | Damper Drive Removal and Installation |
| Steering System | 98-114 | Steering Hydraulic System |
| Service Brakes | 115-123 | Active Elements, Service Brakes Hydraulic System |
| Park Brake | 124-126 | Park Brake Hydraulic System |
| Frame or Supporting Structure | 127-136 | Frame Installation, Chassis Weights |
| Operator′S Station | 137-195 | Operator Enclosure, Seat and Seat Belt, Heating and Air Conditioning System |
| Sheet Metal and Styling | 196-199 | Hood or Engine Enclosure, Miscellaneous Shields |
| Main Hydraulic System | 200-214 | Hydraulic Oil Filter Cap, Hydraulic Oil Filter, Hydraulic Reservoir Opening, Suction Wand, Discharge Wand, Hydraulic Reservoir, Hydraulic Pump/Priority Valve, Charge Pump |
| Loader | 215-242 | Bucket, Attachment Coupler, Frames, Loader Hydraulic System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheels and Fasteners | Group 0110 | p. 2 |
| Inspect hydraulic hoses periodically | at least once per year | p. 12 |
| Warm battery | 16°C (60°F) | p. 15 |
| Metric 24° O-Ring Seal DIN 20078 Torque Value (Hand tighten so O-ring contacts seat plus an additional 1/4-1/3 turn using a wrench) | 1/4-1/3 turn | p. 33 |
| T-Bolt Torque (Nominal Dia 8) | 29 N·m (21 lb-ft) | p. 28 |
| Wheel Weight (approximate) | 77 kg 170 lb. | p. 45 |
| Hydraulic Reservoir and Filter Capacity | 90 L 23.7 gal. | p. 59 |
| Engine Slow Idle Speed | 830–850 rpm | p. 67 |
| Cooling System Capacity | 12 L 3.1 gal. | p. 82 |
| Apply grease to pin lubrication fittings (11) | See Lubricate Steering Cylinder . (Operator's Manual.) | p. 111 |
| Piston Nut Torque | 200 N·m 148 lb.-ft. | p. 112 |
| Cylinder Head Torque | 600 N·m 443 lb.-ft. | p. 112 |
