Looking for a Manitou 1650RT service manual PDF? This 278-page factory service manual (OEM #50950470) covers the RT135, RT165, 1350RT, and 1650RT compact track loaders, from track drive to hydrostatic pump. Inside you get full wiring diagrams for the operator safety interlock and keypad circuits, hydrostatic and hydraulic system schematics, Yanmar DTC troubleshooting, and page after page of teardown procedures: lift arm removal, travel motor service, control handle adjustments, cylinder and spool leakage tests. Swap the engine oil filter every 250 hours and the hydraulic filter element at 500 hours or annually; your RT135 or 1350RT calls for a Group 34 battery rated 800 CCA with 110 reserve. No more chasing wiring faults with a multimeter and a prayer. Bookmarked, keyword-searchable, and opens on any device; pull it up next to the machine and start wrenching.
What's Inside This Manitou RT135, RT165, 1350RT, 1650RT Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 2 | Specifications, General Information, Signal Words, Mandatory Safety Shutdown Procedure, Relieving Hydraulic Pressure |
| Safety | 11-17 | General Information, Signal Words, Additional Safety Reminders, Mandatory Safety Shutdown Procedure, Lift Arm Support Device, Lift Arm Support Device Engagement |
| Safety Chapter Notes & Lubrication | 18-24 | Safety Notes, Hydraulic Oil Reservoir, Crankcase Oil, Grease Fitting Locations, Cooling System Drain, Hydraulic Oil Cooler |
| Chassis | 25-58 | Engine Access Cover - Removal and Installation, ROPS/FOPS Removal and Installation, Seat Removal and Installation, Seat Slide Replacement, Side Console Removal and Installation |
| Track Drive | 59-68 | Rubber Track Removal and Installation, Pontoon Assembly Removal and Installation - RT165/1650RT Only, Travel Motor and Bogie Wheels Removal and Installation |
| Controls | 69-96 | 5, 11, 13, 4, 12, 14 |
| Hydrostatic System | 97-108 | Warning, Charge Pressure Test and Adjustment, Hydrostatic Pump Relief Valves, Hydrostatic Pump Removal and Installation |
| Troubleshooting Guide | 109-116 | - |
| Hydraulic System | 117-176 | Pressure Check, Test and Adjustment, Tilt Cylinder Test, Tilt Circuit Spool Leakage Test, Self-Leveling Valve Test, Lift Cylinder Test, Lift Circuit Spool Leakage Test |
| Electrical System | 177-218 | Description of Operation - Operator Safety Interlock, Right Instrument Panel - Control Keypad Indicators, Right Instrument Panel - Control Keypad Buttons |
| Engine (221-224) | 221-224 | Troubleshooting Guide, Oil Filter Element Removal and Installation, Air Cleaner Assembly Removal and Installation, Battery Removal and Installation, Engine Removal and Installation |
| Engine Parts Listing - DPF | 225 | Oil Filter Element Removal and Installation, Air Cleaner Assembly Removal and Installation (RT165/1650RT Shown; Others Similar), Air Filter Element Removal and Installation |
| Engine Parts Listing - Non-DPF (226-233) | 226-233 | - |
| Engine Parts Listing - Non-DPF (235-242) | 235-242 | - |
| Engine (243-262) | 243-262 | Starter and Exhaust System Service, Alternator Belt Adjustment, Radiator and Fan Removal, Engine Removal Procedures, Diagnostic Data Port, Yanmar Dtc Troubleshooting |
| Index | 263-276 | Alphabetical Listing of Topics, Page References, Service Procedures, Component Identification, Troubleshooting Guides |
| Contact Information | 278-278 | Manitou Group Contact Details, Service and Support, Official Website, Copyright Information |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| RT135/1350RT | ||
| Battery | 12-V DC, Group 34, 800 CCA, 110 Reserve | p. 9 |
| Engine Oil Capacity | 6.8 US qts | p. 9 |
| Fuel Tank Capacity | 15.7 US gal | p. 9 |
| Hydraulic System (entire) Capacity | 14.0 US gal | p. 9 |
| Engine Coolant (entire) Capacity | 2.5 US gal | p. 9 |
| All Models | ||
| Hydraulic oil filter element replacement interval | every 500 hours of operation or annually | p. 20 |
| Engine oil filter element replacement interval | every 250 hours of service | p. 20 |
| Hydraulic leaks from rotation reducer or drain plugs | Check for leaks. Repair/replace as necessary. | p. 118 |
| RT165/1650RT | ||
| Engine Oil Capacity | 9.5 US qts | p. 9 |
| Fuel Tank Capacity | 16.5 US gal | p. 9 |
| Hydraulic System (entire) Capacity | 15.8 US gal | p. 9 |
| Engine Coolant (entire) Capacity | 3.4 US gal | p. 9 |
Manitou RT135, RT165, 1350RT, 1650RT Common Problems This Manual Covers
Manitou RT165 lift arm drifts down with loaded bucket, tilt cylinder bleeds off overnight
Test main relief pressure at the auxiliary coupler; an RT165 or 1650RT should hold 3250 psi per the specifications on page 9. If pressure checks good, run the lift cylinder and spool leakage tests in the hydraulic system section starting on page 117. Engage the lift arm support device before working under a raised arm.
Manual Section: Hydraulic System p. 117Hydraulic oil leaking from rotation reducer and drain plugs, puddle under machine after sitting
Relieve hydraulic pressure using the mandatory shutdown procedure, then clean the reducer housing to find the source. Check for leaks and repair or replace the seal as directed on page 118. Lubricate the new fixing screw seal before installation; a dry seal cuts on assembly. Replace the hydraulic filter element on its 500 hour interval to keep debris out.
Manual Section: Hydraulic System p. 118Alternator belt squeals on startup, needs constant tension adjustment, charge light flickers at idle
Inspect the belt for glazing, cracks, and oil contamination; replace a worn belt instead of re-tensioning it. Loosen the alternator pivot and adjuster bolts, set tension using the belt adjustment procedure on page 243, then snug the bolts back down. Run the engine and confirm the 100 A alternator holds charging voltage under full electrical load.
Manual Section: ENGINE p. 243Battery voltage drops below 12.3 V overnight and will not recharge in cold weather
Measure resting voltage at the battery posts; anything below 12.3 V needs a recharge before you condemn the battery. Clean and tighten both cable connections and the ground strap, then load test. With the engine running, verify the 100 A alternator raises voltage above resting level. If charging stays weak, work through the electrical troubleshooting section starting on page 177.
Manual Section: Electrical System p. 177Engine loses power and runs rough under load, black exhaust smoke worse than normal
Check the air cleaner element first; a plugged filter chokes the engine under load. Pull stored fault codes and compare them against the Yanmar diagnostic list on page 254, then follow the engine troubleshooting guide starting on page 221. Replace the engine oil filter every 250 hours of service and inspect the fuel supply for restriction.
Manual Section: Engine p. 221Frequently Asked Questions
What are the torque specifications for the travel motor bolts on the Manitou RT165?
For the travel motor, the 10 socket-head capscrews securing the motor to the assembly should be torqued to 210 ft-lbs (285 N•m). p. 67
What is the total hydraulic system capacity for the Manitou RT165/1650RT models?
The total hydraulic system capacity for the RT165/1650RT models is 15.8 US gallons (59.8 L), with a bare reservoir capacity of 10.3 US gallons (39 L). p. 9
What is the engine oil capacity for the Manitou RT165/1650RT models?
The engine oil capacity for the RT165/1650RT models is 9.5 US quarts (9.0 L). p. 9
What is the recommended replacement interval for the hydraulic oil filter element?
The hydraulic oil filter element should be replaced after every 500 hours of operation or annually, whichever occurs first. There is also an initial 50-hour element replacement schedule for new track loaders. p. 19
How should the alternator belt tension be adjusted?
The fan belt tension should be adjusted so that it deflects about 1/2 inch (13 mm) under a load of 20 lbs. (90 N) when pushed midway between the alternator and the engine crankshaft pulley. p. 252
How quickly can I access this Manitou RT135, RT165, 1350RT, 1650RT manual?
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