Six machine variants, one manual: OEM #50940649/B0820 carries the RT185, RT215, RT255, 1850RT, 2150RT, and 2550RT back to factory spec across 316 pages. Hydraulic schematics trace fluid routing through the control valve, track tension cylinder, travel motor, lift and tilt cylinders, and Hydraglide manifold. Electrical coverage splits by engine: Deutz Tier 4 schematics for the RT255/2550RT, Yanmar Tier 4 for the RT185/RT215 family, down to circuit level. Torque the travel motor mounting screws to 230 Nm (170 lb-ft), and pull the hydraulic oil return filter at 50 hours, then every 500 after. Diagnosing a fault blind across six variants burns an afternoon. Download it, search any spec by keyword, and have the right schematic open on your tablet before you unplug the first connector.
What's Inside This Manitou Group RT185 & variants Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 9-28 | Safety Symbol and Signal Words, Mandatory Safety Shutdown Procedure, Applications with Load-Handling Devices, Parking the Machine, Electrical Energy, Maintenance and Service Safety Practices, Battery Hazards |
| Introduction | 29-34 | Contents and Use of This Manual, Machine Orientation, Component Identification, Machine Model and Serial Number Locations, ROPS/FOPS Certification Label, Indicator and Operation Symbols, Machine Controls and Operation |
| Maintenance | 35-68 | Maintenance Schedule, Checks, Cleaning and Inspection, Leakage Check, Lubrication and Filter Changes, Functional Check, Engine Maintenance, Engine Air Filters |
| Models RT255 and 2550RT Deutz Engine | 69-100 | General Information, Deutz SerDia Connection, Engine Access, Engine Maintenance, Deutz Engine Removal/Installation, Fuel System Maintenance, Engine Troubleshooting |
| Models RT215, RT185, 2100RT, and 1850RT Yanmar Engine | 101-132 | General Information, Yanmar SmartAssist Connection, Engine Access, Engine Maintenance, Yanmar Engine Removal/Installation, Fuel System Maintenance, Engine Troubleshooting |
| Hydrostatic Drive System | 133-168 | General Information, General Hydraulic Service Notes, Hydraulic Oil Analysis, Hydrostatic Drive Pump, Hydrostatic Pump Relief Valves, Travel Drive Troubleshooting, Neutral Centering Check/Adjustment |
| Work Hydraulics | 169-196 | General Information, General Hydraulic Service Notes, Hydraulic Oil Analysis, Hydraulic Hoses/Tubes, Seals, Main Pressure Test and Adjustment, Hydraulic Gear Pump |
| Hydraulic Schematic | 197-252 | Control Valve, Track Tension Cylinder, Travel Motor, Lift Cylinder, Tilt Cylinder, Hydraglide Manifold |
| Wire Harness Diagrams | 253-263 | Chassis Wire Harness Diagram - RT255 and 2550RT (Page 1 of 2), Chassis Wire Harness Diagram - RT255 and 2550RT (Page 2 of 2), Chassis Wire Harness Diagram - RT185, RT215, 1850RT |
| Electrical Schematics | 264-316 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| RT215, RT185, 2100RT, and 1850RT | ||
| Hydrostatic pump to engine flywheel housing mounting screws torque | 102 Nm (75 lb.-ft.) | p. 113 |
| Engine mounting hardware torque | 203 Nm (150 lb.-ft.) | p. 113 |
| All Models | ||
| Hydraulic oil return filter replacement interval | After first 50 hours; every 500 hours thereafter | p. 38 |
| Hydraulic oil filter installation torque | 3/4 rotation past the point where the gasket contacts the filter head | p. 50 |
| Fuel filter replacement interval | annually, or after every 500 hours of use | p. 49 |
| Engine air filters replacement interval | every 250 hours of use, or every 6 months, or whenever the engine air filter restriction indicator on the indicator panel is lit | p. 43 |
| Inner air filter element replacement interval | every third time the outer element is replaced, unless the outer element is damaged or the inner element is visibly dirty | p. 43 |
| Hydraulic hoses replacement interval | every six years from the date of manufacture | p. 54 |
| Hydraulic tubing nuts tightening torque | 1/4 to 1/2 turn after reaching a sharp torque rise point | p. 170 |
| Sprocket wear limit | 4mm (1/8”) of material worn from any point along the sprocket tooth profile | p. 158 |
| Rear idler mounting screws torque | 570 Nm (420 lb.-ft.) | p. 154 |
| RT255/2550RT | ||
| Fuel filters (primary and water separator) replacement interval | Every 1000 hours; 500 hours under extreme conditions | p. 38 |
Manitou Group RT185 & variants Common Problems This Manual Covers
Manitou RT215 compact track loader hydraulic power drops after warming up or operating under load
Inspect the hydraulic oil return filter. Replace the element after the first 50 hours and every 500 hours thereafter as noted on page 38. Check the fluid level at the sight gauge on page 49 and verify it sits in the middle. Tighten all replacement filters 3/4 rotation past gasket contact.
Manual Section: Work Hydraulics TroubleshootingDrive system stalls or jerks when turning and loses track power on one side
Test the travel motor mounting hardware on page 152. Torque the travel motor mounting screws to 230 Nm (170 lb-ft). If the motor shifts under load, inspect the drive sprocket to travel motor mounting screws on page 154 and torque them to 350 Nm (258 lb.-ft.).
Manual Section: Hydrostatic Drive System TroubleshootingBoom and auxiliary hydraulics operate erratically or have slow response during heavy lifting
Attach a pressure gauge with a minimum capacity of 414 bar (6000 psi) as specified on page 171. Run the engine at 1000 rpm and verify the standard auxiliary hydraulics pressure reads 204-210 bar (2960-3045 psi). Inspect solenoid valves on page 194 and torque the retaining nuts to 5.1 Nm (45 in.-lb.).
Manual Section: Work Hydraulics TroubleshootingTracks slip or pop during heavy pushing and undercarriage makes loud grinding noises
Measure the drive sprockets for excessive wear. Replace the sprocket if you find 4mm (1/8 in) of material worn from any point along the sprocket tooth profile, per page 158. Check the rear idler mounting screws on page 154 and torque them to 570 Nm (420 lb.-ft.) to prevent track derailment.
Manual Section: Hydrostatic Drive System TroubleshootingFrequently Asked Questions
How do I reset a Manitou RT185/RT215/RT255/1850RT/2150RT/2550RT error code?
Corrected error codes stay on screen until you refresh the display. Press the multi-function display several times to cycle through all screens; once you do, only active codes appear in the rotation.
What do Manitou RT185/RT215/RT255/1850RT/2150RT/2550RT fault codes mean?
Fault codes are spelled out in DTC tables split by engine. For the RT255 and 2550RT (Deutz), check Table 8 on page 95 for code types and descriptions. For the RT215, RT185, 2100RT, and 1850RT (Yanmar), Table 10 on pages 125-132 lists each trouble code and what it means.
What are the torque specs for Manitou RT185/RT215/RT255 track loader tracks, sprockets, or undercarriage bolts?
Undercarriage torque values run 230 Nm (170 lb-ft) for the travel motor mounting screws, 350 Nm (258 lb-ft) for the drive sprocket screws, and 570 Nm (420 lb-ft) for the rear idler screws. Pages 313-315 cover general thread and hydraulic fitting torques.
How do I clear the hydraulic or ECM warning on a Manitou 2150RT?
ECM warnings clear from the screen by pressing the multi-function display repeatedly to cycle through the screens; corrected codes drop out of the rotation. Hydraulic warnings like 'Hydraulic oil temperature too hot' or 'Hydraulic oil filter restricted' go away on their own once you fix the underlying fault.
How will I receive this Manitou Group RT185 & variants Service Manual?
This is a 316-page searchable PDF, ready to download the moment you order. It opens on any device, so you can pull it up on your phone right at the machine. No shipping, no waiting.
Am I able to print pages from this Manitou Group RT185 & variants manual?
None at all. The PDF is DRM-free, so print whatever sections you want to carry out to the shop. Standard letter or A4 paper both work.
Are there wiring harness diagrams in this Manitou Group RT185 & variants manual?
Yes, this Manitou Group RT185 & variants Service Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
Document Quality
This document is a native digital PDF, allowing you to easily search and copy all text, which is crisp and clear throughout. Diagrams and illustrations are primarily raster images, but they are generally clear with readable labels. The overall page condition is clean, with no noticeable scan artifacts, stains, or skewed pages. There are no notable blank or filler pages present in the document.
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