This Manitou America Z25, 250Z Service Manual (OEM #50940346) runs 576 pages and stays on one machine: your compact excavator, down to every bolt, seal, and circuit. Hydraulic coverage fills 210 pages, with full circuit schematics for boom, arm, bucket, swing, blade, and travel, plus wiring diagrams for the cabin harness, SmartAssist-Remote harness, and decel harness. The troubleshooting section opens with a quick-reference fault table beside error-code diagnostics for the LCD monitor and alarm systems, and 100 pages of step-by-step adjustment and repair procedures back it up. Suction filter specs list 697 sq.cm of filtration at 150-micron accuracy; hose clip torque runs 4.5 to 5.9 N-m by clip size. When your Z25 is down, every hour costs money, so the bookmarks and keyword search land you on the right spec fast.
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
Manitou Z25 or 250Z excavator slow hydraulic response on boom and bucket functions p. 25
Check the main system relief pressure on page 25. Confirm the P1 and P2 circuits hold steady at 2987 psi (20.6 MPa). If they read low, inspect the hydraulic oil tank for the full 10.3 Gals (6.6 L) charge.
Manual Section: Technical DataEngine runs rough, lacks power, or exhibits excessive vibration under heavy load p. 71
Torque the cylinder head bolts in the sequence on page 71, applying exactly 40 to 43 ft·lbf (53.9 to 57.9 N·m) to each one. Test compression pressure to rule out a head gasket leak before you restart the machine.
Manual Section: EngineDrive performance is reduced and track assembly makes clunking noises during travel p. 67
Inspect the undercarriage, then tighten the track roller mounting bolts to 152 to 180 ft·lbf (206 to 245 N·m) per page 67. Swap out any roller with severe binding or flat spots to bring travel speed back.
Manual Section: Service StandardsHydraulic system overheating accompanied by a sudden and complete loss of digging power p. 38
Drain the hydraulic tank and fit a new return filter. Review the maintenance intervals on page 38, where the return filter calls for replacement every 500 hrs. Clean the suction filter, then refill the system with clean fluid.
Manual Section: Technical DataFrequently Asked Questions
What do error codes on the Manitou Z25/250Z mean?
Chapter 5, Section 5-4 holds a detailed Error Code List with the code, classification, description, detection condition, causes, and corrective measures for each malfunction. Error code 00 000091.00, for instance, flags an accelerator sensor malfunction (above normal operating range) from a connection failure or a defective sensor.
What are the torque specs for Manitou Z25/250Z hydraulic fittings?
Chapter 3, Section 3-7-4 lists tightening torque for hydraulic fittings. On parallel pipe threads (30° sheet type and O-ring sheet type joints), a 3/8" fitting takes 32.5 to 39.8 ft·lbf (44.1 to 53.9 N·m); on taper pipe threads, the same size takes 21.7 to 28.9 ft·lbf (29.4 to 39.2 N·m).
How do I troubleshoot a Manitou Z25/250Z that will not start or move?
For a no-start, work the Starter Motor Troubleshooting flowchart on page 185: check shift lever position, battery charge, and starter motor operation. When the implement will not move, turn to the Quick Reference Table for Troubleshooting on page 567, which points to causes like hydraulic pump or control valve faults.
How do I clear Manitou Z25 error codes?
Start by fixing the root cause. Once you have checked the connectors, harnesses, and related components (such as the accelerator sensor), turn the starter switch to 'OFF', then back to 'ON'. That power cycle lets the system re-evaluate and clear the code if the fault is gone.
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.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy the full text. The text is generally crisp and readable throughout. Diagrams and illustrations are mostly raster images; their labels are readable, though some show minor pixelation upon close inspection. The pages are clean with no significant stains or marks, and there is one intentionally blank page.
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