An overfilled hydraulic tank or a lift taken past the load chart on soft ground can park your machine for the rest of the shift. The Manitou MLT523 Evolution, MT620, C-E3 operator manual PDF is Manitou's own 142-page handbook (OEM ID 647011AS) for these rough terrain forklift trucks, covering both Turbo Evolution models in the C-E3 series. Load charts sit inside the long Description section with the dimensions and every instrument and control, so you can check rated capacity against load centre before raising a load high on tyres or on stabilizers. The back third of the book goes to maintenance: the servicing schedule by hour meter, daily checks, periodic work and the locking procedures for picking up attachments. Plan on 123 liters for the hydraulic tank and 11.2 liters for the engine oil. An oil change can stall on a single missing capacity figure. Bookmarked, text searchable, bought once and yours to keep for your machine.
What's Inside This Manitou MLT523 Evolution, MT620, C-E3 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Instructions to the Company Manager | 26-27 | Operator, Lift Truck (Truck's Suitability for the Job, Adaptation of the Lift Truck to Standard Environmental Conditions, Modification of the Lift Truck), Instructions, Maintenance |
| Instructions for the Operator | 28-45 | Preamble (Operator's Manual, Authorization for Use in France, Maintenance, Modification of the Lift Truck, Lifting People) |
| Maintenance Instructions of the Lift Truck | 46-47 | Maintenance (Lubricant and Fuel Levels, Hydraulic, Electricity, Welding, Washing the Lift Truck) |
| If the Lift Truck Is Not to Be Used for a Long Time | 48-50 | Preparation, I.C. Engine Protection, Lift Truck Protection, Returning to Service |
| Description | 51-96 | Identification, Characteristics, Dimensions, Load Charts, Instruments and Controls, Options |
| Maintenance | 97-130 | Spare Parts, Filters, Belts, Lubricants, Servicing Schedule, Daily Maintenance, Periodic Maintenance |
| Picking Up the Attachments | 131-142 | Attachment Introduction, Manual Locking, Hydraulic Locking, Connection Procedures |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Oil Capacity | 11.2 Liters | p. 104 |
| Cooling Circuit Capacity | 13.7 Liters | p. 104 |
| Fuel Tank Capacity | 94 Liters | p. 104 |
| Hydraulic Oil Tank Capacity | 123 Liters | p. 104 |
| Wheel Nuts Tightening Torque | 630 N.m ± 15% | p. 109 |
Manitou MLT523 Evolution, MT620, C-E3 Common Problems This Manual Covers
Manitou MLT523 and MT620 engine water temperature gauge in red zone, warning light and buzzer on
Stop the I.C. engine once the gauge passes 105° into the red zone, as page 74 directs. Check the coolant level and look for a leak or a dirty radiator (page 75). Clean the radiator cores with a soft cloth, then blow compressed air in the same direction as the cooling airflow. Never use a water jet or high-pressure steam (page 110).
Manual Section: I.C. Engine Water Temperature p. 74Engine oil pressure warning light and buzzer come on with the engine running
Stop the I.C. engine immediately when the red oil pressure lamp and buzzer come on, as page 75 directs. Check the engine oil level and look for leaks. Engine oil capacity is 11.2 liters (page 104). Top up only with the recommended lubricant and never use contaminated oil (page 46). If the lamp stays lit, consult your dealer without delay (page 74).
Manual Section: Description p. 75Battery charge warning light and buzzer come on while the lift truck is running
Stop the I.C. engine immediately, as page 75 directs, and work through the listed causes: electric circuit, alternator belt, alternator. Check the alternator belt tension using the belt check and adjustment procedure in Maintenance. Disconnect the battery before you work on the electrical circuit, and never short-circuit the starter relay to start the engine (page 46).
Manual Section: Description p. 75Air filter or hydraulic return filter clogged warning light and buzzer come on
Stop the I.C. engine and find out which cartridge is clogged (page 75). Never tap the air cartridge against a hard surface or wash it. Replace the inner safety cartridge if it is clogged (page 110), and never run the truck with the filter removed (page 119). Clean around the hydraulic return filter before you open it (page 120), and never loosen hydraulic components while the circuit is under pressure (page 46).
Manual Section: Description p. 75Red braking oil level warning light and buzzer come on with the lift truck running
Stop the I.C. engine immediately when the braking oil lamp and buzzer come on, as page 74 directs. Check the braking oil level and look for a leak. Top up only with the recommended lubricant (page 46). If the level keeps dropping abnormally, park the truck and consult your dealer. Don't keep topping it up and working.
Manual Section: Description p. 74Boom hydraulic movements cut off with red LED and alarm at longitudinal stability limit
Retract the boom first, then raise it. Page 76 allows only these de-aggravating movements at the red LED. To restart, hold tab A2, press switch A to position 2 and release (page 93). Then re-enable the cut-out by pressing the top and then the bottom of switch A. If the self-test LEDs flash intermittently, stop and consult your dealer. Never adjust the strain gauge yourself.
Manual Section: Cutting-off 'Simple' Hydraulic Movements p. 93Frequently Asked Questions
What are the engine oil and fuel filter replacement specifications for the Manitou MLT523 Evolution, MT620, C-E3?
For the MLT 523 and MT 620 models, the I.C. engine oil filter (part number 279809) should be changed every 500 hours. The fuel filter (part number 746364) and fuel pre-filter (part number 272194) also require replacement every 500 hours. p. 101
What are the air filter replacement specifications for the Manitou MLT523 Evolution, MT620, C-E3?
The dry air filter cartridge (part number 227959) should be cleaned every 50 hours and changed every 500 hours. The safety dry air filter cartridge (part number 227960) should be changed every 1000 hours. p. 101
What is the correct procedure for checking the I.C. engine oil level?
Place the lift truck on level ground with the engine stopped and allow the oil to drain into the sump. Remove the dipstick, clean it, and check that the level is between the two notches. If necessary, add oil through filler port 2. p. 108
What is the required belt tension for the alternator/fan/crankshaft belt?
Under a normal pressure exerted with the thumb (45 N), the belt should move approximately 10 mm. If adjustment is needed, untighten screws 1 by two to three thread turns, swivel the alternator assembly to obtain the required tension, and retighten screws 1 to a torque of 22 N.m. p. 114
What is the procedure for draining the cooling liquid?
Place the lift truck on level ground with the engine stopped and cold. Remove access panel 1, place a container under drain plug 2, and unscrew it. After draining, retighten the drain plug to 20 N.m and fill the circuit with a mixture containing 25% ethylene glycol-based antifreeze. p. 126
What format is this Manitou MLT523 Evolution manual in?
This is a 142-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print just the pages I need from this Manitou MLT523 Evolution manual?
Yes. Print a single page or a chapter for your own shop use, on letter or A4.
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