This is the factory Cat SIS repair bundle for the 216, 226 and 228 skid steer loaders in the 3034-engine configuration (serial prefixes 4NZ, 5FZ, 6BZ). Everything is here to strip and rebuild the machine: the 3034 engine from cylinder head to crankshaft, cooling and fuel systems, the hydrostatic power train with stall and double-stall test procedures, the full hydraulic system with pump flow tests and relief valve adjustment, loader linkage, cab and R134a air conditioning. The electrical section carries the wiring schematics plus harness open and short circuit tests. These are mechanical machines - diagnosis is done with a pressure gauge, a tachometer and a stopwatch, and this bundle gives you every target number to test against.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Air Inlet and Exhaust System | 1-58 | Turbocharger, Exhaust and Air Intake Service for the 3034 Engine |
| Basic Engine | 59-576 | Cylinder Head, Block, Pistons, Crankshaft, Camshaft, Engine Crankcase Pressure (Blowby) Test and 3034 Engine Specifications |
| Cooling System | 577-750 | Radiator, Water Pump, Thermostat, Hoses and Cooling System Testing |
| Electrical and Starting System | 751-2060 | Alternator, Starter, Batteries, System Schematics, Wiring Harness Open and Short Circuit Tests, Engine Oil Pressure Switch, Machine Security System, Product Link |
| Frame and Body | 2061-2083 | Loader Frame, Covers and Body Panels |
| Fuel System | 2084-2290 | Injection Pump, Injectors, Fuel Lines, Fuel System Operation and Testing |
| Hydraulic System | 2291-2751 | Pump Flow Test, Pilot System Pressure, Main and Line Relief Valve Test and Adjust, Hydraulic Oil Contamination Test, Filling and Flushing, Bank Valve, Interlock Manifold and Diverter Valve, Troubleshooting Worksheets |
| Implements | 2752-2806 | Loader Linkage, Bucket and Work-Tool Circuits, High Flow Troubleshooting |
| Lubrication System | 2807-2882 | Oil Pump, Engine Oil Pressure and Relief Valve, Filters and Lubrication Testing |
| Machine Arrangement | 2883-2894 | Overall Machine Arrangement Drawings |
| Operator Station | 2895-3451 | Cab, Seat, Controls, Hand and Foot Control Linkage, Heating and Air Conditioning R134a |
| Power Train | 3452-3734 | Hydrostatic Pumps and Motors, Stall and Double-Stall Tests, Final Drives, Chains, Axles and Brake Service |
| Service Equipment and Supplies | 3735-3756 | Dealer Service Tools and Shop Supplies |
| Work Tools | 3757-3765 | Work-Tool Mounting and Coupler Service |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 216 | ||
| Main relief valve pressure, 216 | 21400 +/- 700 kPa (3100 +/- 100 psi) | p. 2445 |
| Line relief valve pressure (auxiliary circuit), 216 | 23000 +/- 700 kPa (3335 +/- 100 psi) | p. 2450 |
| 226 | ||
| Main relief valve pressure, 226 | 23000 +/- 700 kPa (3335 +/- 100 psi) | p. 2445 |
| Line relief valve pressure (auxiliary circuit), 226 | 25000 +/- 700 kPa (3625 +/- 100 psi) | p. 2450 |
| 216, 226 | ||
| Line relief valve pressure (lift cylinder head end) | 27600 +/- 700 kPa (4000 +/- 100 psi) | p. 2450 |
| Line relief valve pressure (tilt cylinder head end) | 24100 +/- 700 kPa (3495 +/- 100 psi) | p. 2450 |
| Line relief valve pressure (tilt cylinder rod end) | 27600 +/- 700 kPa (4000 +/- 100 psi) | p. 2450 |
| Engine speed (high idle) | 2820 +/- 50 rpm | p. 2454 |
| Engine speed (low idle) | 1000 +/- 50 rpm | p. 2454 |
| Charge pressure PS1 (low idle / high idle) | 2900 +/- 100 kPa (420 psi) / 3300 +/- 200 kPa (480 psi) | p. 2454 |
| Speed sensing pressure PS2 (low idle / high idle) | 1100 +/- 100 kPa (160 psi) / 2200 +/- 100 kPa (320 psi) | p. 2454 |
| Pilot pressure (high idle) | 3300 +/- 200 kPa (480 +/- 30 psi) | p. 2441 |
| Lift cylinder speed (raise / lower / float) | 2.7 / 2.7 / 2.8 seconds (+/- 0.2) | p. 2454 |
| Tilt cylinder speed (forward / back) | 2.0 / 1.6 seconds (+/- 0.2) | p. 2454 |
| Cylinder drift wear limit (lift and tilt) | maximum 3 mm in 1 minute with a 200 kg load | p. 2454 |
| Engine stall speed (stall test) | 2200 +/- 500 rpm | p. 2456 |
| MA pressure, front and rear pump (stall test) | 38200 +/- 2000 kPa (5512 +/- 290 psi) | p. 2456 |
| Engine stall speed (double stall test) | 2000 +/- 500 rpm | p. 2456 |
| MA pressure, front and rear pump (double stall test) | 35000 +/- 3000 kPa (5075 +/- 435 psi) | p. 2456 |
| Wheel speed (maximum runout) | 80 +/- 8 rpm | p. 2457 |
| Pump case pressure (low idle / high idle) | 100 +/- 50 kPa / 200 +/- 100 kPa | p. 2456 |
| Fan speed (low idle / high idle) | 1225 +/- 25 rpm / 2300 +/- 50 rpm | p. 2456 |
| All models | ||
| Hydraulic pump wear limit | maximum flow loss 7 percent | p. 2438 |
| Hydraulic oil contamination limit | 125000 particles >5 microns and 16000 particles >15 microns per 50 mL sample | p. 2478 |
| Engine | Cat 3034 (this bundle is the 4NZ00001-03399 configuration, powered by 3034) | p. 1 |
