This is the Manitou service manual for the Z25 and 250Z compact excavators (form number 50940346), powered by the 3TNV80F-SXNBV diesel. Across 576 pages it covers the engine, the electrical equipment with its LCD monitor and alarms, the hydraulic system, the undercarriage, and the swing and travel drives.You get service standards and tightening torque tables, hydraulic filter and relief-pressure data, wear limits for pins, bushings, rollers and idlers, and step-by-step removal and reinstallation for the starter motor, radiator, oil cooler, and fan belt.A troubleshooting quick-reference table helps trace weak hydraulics, travel problems, and starting faults to a cause, and the appendix carries the wiring diagram. Owners and independent shops can diagnose and repair the Z25 and 250Z with factory numbers instead of guesswork. It is delivered as a downloadable PDF for any device or the shop printer.
What's Inside This Manitou America Z25, 250Z Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 9-20 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 21-48 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List, Specifications for Attachment, Periodic Inspection and Servicing, Fuel |
| Service Standards | 49-78 | Machine Performance, Undercarriage (Rubber Track Specifications, Common Specifications of Rubber Crawlers), Controls, Hydraulic Equipment (Hydraulic Cylinders) |
| Engine | 79-218 | Before You Begin Servicing, Introduction, Special Service Tools, Measuring Instruments, Cylinder Head, Disassembly of Rocker Arm Assembly, Measuring and Adjusting Valve Clearance |
| Electric System | 219-246 | Electric Equipment of Machine (Parts Layout of Electrical Equipment, Lcd Monitor and Alarm Systems), Circuit Description of Engine Start and Stop (Battery Charge) |
| Hydraulic System | 247-456 | Outline (Control Valve Operation, Additional Operation of Control Valve) |
| Adjustment and Repair | 457-556 | Engine and Electric Equipment (Removal Reinstallation: Starter Motor, Radiator and Oil Cooler, Fan Belt) |
| Troubleshooting | 557-572 | Quick Reference Table for Troubleshooting |
| Appendix Wiring Diagram | 573-575 | Wiring Diagram, Cabin Harness, SmartAssist-Remote Harness, Decel Harness |
| Disclaimer | 576 | Warning, Operator's Manual Usage, Do Not Remove From the Machine, California Proposition 65 Warnings |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nuts torque | Not specified directly; general bolt/nut tightening torques are provided based on thread size and strength classification in Section 3-7-3. | p. 72 |
| Suction filter filtration area | 108 sq.in. (697 sq.cm) | p. 27 |
| Suction filter filtration accuracy | 150 u | p. 27 |
| Hydraulic hose clip 60 tightening torque | 3.7 to 4.3 ft·lbf (4.5 to 5.9 N·m) | p. 68 |
| Hydraulic hose clip 13 tightening torque | 1.9 to 2.4 ft·lbf (2.5 to 3.4 N·m) | p. 68 |
| Oil seal capacity to resist pressure (pump housing) | 42.7 PSI (0.3 MPa) | p. 289 |
| General seal replacement rule | Replace all removed seals and O-rings with new ones during reassembly. | p. 317 |
| General allowable clearance for pin and bore of bush or hole (Front Attachments) | 0.04 in. (1.0 mm) | p. 64 |
| Wrist pin bushing bore standard diameter | 0.8671 to 0.8676 in. (22.025 to 22.038 mm) | p. 56 |
| Bucket fulcrum pin diameter (standard) | Ø1.50 (38) in. (mm) | p. 64 |
| Bucket 'link A' pin diameter (standard) | Ø1.50 (38) in. (mm) | p. 64 |
| Swing bearing to track frame tightening torque | 87 to 94 ft·lbf (117.7 to 127.5 N·m) | p. 67 |
Manitou America Z25, 250Z Common Problems This Manual Covers
Slow, weak or jerky hydraulics
Boom, arm, bucket, or auxiliary functions that are slow or weak point to flow restriction, low pressure, internal valve leakage, or pump wear. The hydraulic chapter details control-valve operation and the additional operating circuits.
Manual Section: Hydraulic System p. 247Travel power loss or final drive wear
Reduced travel power or a machine that pulls weakly can trace to travel-motor or final-drive wear or contaminated hydraulic oil. The adjustment and repair chapter covers removing and reinstalling the drive components.
Manual Section: Adjustment and Repair p. 457Track tension and undercarriage wear
Poor travel and fast undercarriage wear often trace to track tension out of range or a packed, dirty undercarriage. The service standards give the rubber-track specifications for setting it correctly.
Manual Section: Service Standards p. 49Worn pins, bushings and bucket linkage
Clunking or excessive play in the digging linkage usually means pins, bushings, or bucket linkage running dry or worn past limit. The service standards list the allowable clearances so you can measure and decide what to replace.
Manual Section: Service Standards p. 49Hard starting or rough running
An engine that cranks but will not fire, or runs rough, usually points to the fuel system, air in the lines, or an injection fault. The engine chapter covers the cylinder head, fuel system, and valve clearance procedures.
Manual Section: Engine p. 79No-crank, dead gauges or charging fault
A dead crank, dark gauges, or a battery that keeps going flat point to the battery, starter, alternator, or wiring. The electrical section covers the parts layout, the monitor and alarms, and the start and battery-charge circuit.
Manual Section: Electric System p. 219Frequently Asked Questions
Which machine and engine does it cover?
The Manitou Z25 and 250Z compact excavators, form number 50940346, with the 3TNV80F-SXNBV engine. The 576-page service manual covers both together.
Where do I find the torque specs?
The service standards chapter lists the tightening torque for the machine and engine, for example the cylinder head bolts at 40 to 43 ft·lbf and the track rollers at 152 to 180 ft·lbf. p. 49
Does it include a wiring diagram?
Yes. The appendix at the back contains the wiring diagram, including the cabin, SmartAssist-Remote, and decel harnesses, and the electrical chapter covers the LCD monitor and alarms. p. 573
How do I get it?
The PDF downloads right after checkout, with no shipping. Save it locally and keep a backup for the shop.
Is this Manitou America Z25, 250Z Service Manual a digital download?
Instant PDF download. The full 576-page searchable Service Manual lands in your hands right after payment, ready on a laptop, tablet, or phone out in the shop.
Am I able to print pages from this Manitou America Z25, 250Z manual?
Yes, print as many copies as you want; there are no restrictions. Plenty of mechanics print just the section they need and carry it to the shop floor.
Can I find hydraulic circuit diagrams in this Manitou America Z25, 250Z manual?
Included. Hydraulic system schematics cover all circuits, control valves, and component specifications for the Manitou America Z25, 250Z.
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