Built around one machine, this Manitou America Z17 GEN:2 / 170Z NXT2 Service Manual (OEM #50940307) runs 398 pages on getting your compact excavator back to factory spec. It maps full hydraulic circuit schematics with fluid routing for boom, arm, bucket, swing, blade, and track gauge change, plus wiring diagrams for the monitor and alarm systems, engine start/stop circuitry, and battery charging. Hydraulic procedures cover pressure adjustment on relief valves, swing brake valves, and cut-off valves; troubleshooting charts trace low output, overheating, and arm drift to the root cause. Set your track roller M12 nut to 57.9-72.3 ft•lbf, then confirm main relief pressure at 2987 PSI before you button anything up. Bookmarked and keyword-searchable, it loads on a tablet so you can read at the machine and start wrenching.
What's Inside This Manitou America Z17 GEN:2, 170Z NXT2 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 7-20 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 21-34 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List |
| Engine | 57-96 | Exploded View, Measurement |
| Hydraulic System | 97-132 | Outline (Control Valve Operation, Additional Operation of Control Valve), Hydraulic Circuit Schematic (for Standard Type Machines) |
| Hydraulic Equipment | 133-256 | Removal and Reinstallation of Hydraulic Pump, Removal and Reinstallation of Control Valve, Removal and Reinstallation of Swing Motor, Removal and Reinstallation of Swivel Joint |
| Adjustment and Repair | 257-346 | Electric Equipment of Machine (Parts Layout of Electrical Equipment, Monitor and Alarm Systems, Wiring Diagram, Circuit Description of Engine Start and Stop, And Battery Charging, Removal and Reinstallation of Engine, Removal and Reinstallation of Starter Motor, Removal and Reinstallation of Fuel Injection Pump, Removal and Reinstallation of Fuel Tank, Removal and Reinstallation of Radiator) |
| Periodic Inspection and Servicing | 347-350 | List of Periodic Inspection and Servicing |
| Fuel, Lube Oil and Grease Recommended | 351-354 | List of Fuel, Lube Oil and Grease Recommended, Item, Type, Part Be Refilled, Oil Type, Recommendations Based on Temperature Ranges, Prescribed Amount of Oil |
| Troubleshooting | 355-392 | Machine and Engine, Low Output, Overheating |
| Reference Data | 393-398 | Specifications for Attachment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main relief valve P1 set pressure | 2987 PSI (20.6 MPa) | p. 129 |
| Main relief valve P2 set pressure | 2987 PSI (20.6 MPa) | p. 129 |
| Track roller tightening nut (M12) tightening torque | 57.9 to 72.3 ft•lbf (78.5 to 98.1 N•m) | p. 51 |
| Battery type | 65B24L | p. 29 |
| Battery voltage - 5 hrs rate capacity | 12-40 V-Ah | p. 29 |
| Starter motor model | RA1.4 | p. 29 |
| Starter motor nominal output / Weight | 1.4 kW / 8.4 lbs (3.8 kg) | p. 29 |
| Alternator model | GP9191 | p. 93 |
| Alternator nominal output | 20 A | p. 93 |
| Tightening torque for parallel pipe thread (1/8) | 10.1 to 12.3 ft•lbf (13.7 to 16.7 N•m) | p. 55 |
| Tightening torque for taper pipe thread (1/8) | 5.09 to 6.50 ft•lbf (6.9 to 8.8 N•m) | p. 55 |
| Intake valve oil clearance (wear limit) | 0.006 in. (0.15 mm) | p. 41 |
Manitou America Z17 GEN:2, 170Z NXT2 Common Problems This Manual Covers
Manitou Z17 GEN:2 or 170Z NXT2 engine will not start or turns over slowly in cold weather. p. 257
Inspect the 65B24L battery and cables on page 29 for corrosion or loose connections. Test the starter relay and verify charging voltage. If replacing the starter motor, torque the M10 mounting bolts to 32.5 to 43.4 ft•lbf (44.1 to 58.8 N•m) as shown on page 273.
Manual Section: Adjustment and RepairWeak or jerky hydraulic function and slow boom movements with a noticeable loss of digging power. p. 97
Check the hydraulic oil tank level and fill to the 6.86 Gals (26 L) capacity shown on page 26. Inspect high pressure hoses for leaks. Test the system relief set pressure for P1 and P2, adjusting it to 2986 PSI (20.6 MPa) according to the specifications on page 24.
Manual Section: Hydraulic SystemMachine pulls to one side during travel or track rollers emit a grinding sound under load. p. 257
Clean mud from the undercarriage and inspect track tension. Measure the track roller shaft diameter, replacing any worn past the standard Ø0.98 in. (Ø25 mm) listed on page 46. Torque the M12 track roller mounting bolts to 57.9 to 72.3 ft•lbf (78.5 to 98.1 N•m) per page 289.
Manual Section: Adjustment and RepairEngine temperature gauge spikes quickly under heavy load with black smoke emitting from the exhaust pipe. p. 57
Drain and flush the cooling system. Verify the engine maximum idling speed is within 2570-2620 rpm as detailed on page 27. Remove the valve cover and adjust the cold engine valve clearance to 0.006-0.010 in. following the specifications and procedures found on page 41.
Manual Section: EngineFrequently Asked Questions
How to reset the hydraulic system on a Manitou America Z17 GEN:2?
Reset the hydraulic system by bleeding the trapped air. For each hydraulic component, run the engine at medium speed and work the circuits for about 10 to 15 minutes. For the cylinders, drop the engine to low idle, then slowly extend and retract each one 1.97 to 3.9 inches (50 to 100 mm) off the stroke end 4 or 5 times, followed by 3 or 4 full strokes.
What are the torque specs for the track/frame bolts on a Z17 GEN:2?
The tightening torque for the track roller tightening nut (M12) is 57.9 to 72.4 ft·lbf (78.5 to 98.1 N·m), and for the shoe slide plate (M10) is 32.6 to 43.4 ft·lbf (44.1 to 58.8 N·m). Additionally, for undercarriage reassembly, hexagon socket head bolts (M10x24 and M10x25) require 32.6 to 43.4 ft·lbf (44.1 to 58.8 N·m), and bolts (M12x25) require 57.9 to 72.3 ft·lbf (78.5 to 98.1 N·m).
What do the error codes mean on a Mustang 170Z NXT2?
Troubleshooting flowcharts cover the monitor lamps and gauges, pointing to likely causes when one trips or misbehaves. If the engine oil pressure alarm lamp stays on with the engine running, for example, it usually means low engine oil or a failed oil pressure switch. Each alarm condition gets its own checks and fixes, from replacing fuses to checking wire harnesses or swapping sensors.
How to reset hydraulic pressure on Z17 GEN:2
Hydraulic pressure can be adjusted by modifying the relief valves or the cut-off valve. For main relief valves, retract the bucket or arm cylinder to its stroke end, hold the lever, and read the gauge, then adjust the pressure. For port relief valves, extend or retract each cylinder to its stroke end, hold the lever, and read the gauge. The pressure change per one turn of the adjust screw for main relief valves is 1740 PSI (12.0 MPa), with a tightening torque of 14.47 ft·lbf (19.6 N·m) for the lock nut.
Is this Manitou America Z17 GEN:2, 170Z NXT2 Service Manual a digital download?
Yes, it is a 398-page searchable PDF ready for immediate download. It works on any device, so you can pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print specific sections of this Manitou America Z17 GEN:2, 170Z NXT2?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this Manitou America Z17 GEN:2, 170Z NXT2 manual have electrical diagrams?
Complete wiring diagrams are included, covering all electrical circuits, harness routing, and connector pinouts for the Manitou America Z17 GEN:2, 170Z NXT2.
Document Quality
This document is a high-quality scanned PDF with an accurate OCR layer, allowing you to search and copy the full text. The text is crisp and consistently easy to read throughout. Diagrams and illustrations are clear raster images, with labels generally readable, though they may pixelate if zoomed in significantly. Pages are clean, free of stains, marks, or skewed content. You will find several blank pages interspersed throughout the document.
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