7.1 Lubricants and Fuel Level Management

When replenishing lubricants, hydraulic oil, transmission oil, coolant, or fuel on a Telescro telehandler, the specified fluid type, filling method, and safety requirements must always be followed.

Basic Principle

Use only the specified fluids, fill only at the designated locations, and perform all filling operations only under safe conditions.

Using the wrong fluid, contaminated fluids, or improper filling methods may result in:

• lubrication failure;
• hydraulic system malfunction;
• engine damage;
• fuel system contamination;
• fire risk;
• environmental contamination.

7.2 Requirements for Fluid Use

During maintenance and fluid replenishment, only oils, fluids, and fuel that meet Telescro’s specified requirements may be used.

Fluids That Must Meet the Specified Requirements Include, But Are Not Limited To

• engine oil;
• hydraulic oil;
• transmission oil / gearbox oil;
• coolant;
• fuel;
• grease.

Prohibited Actions

• using contaminated, cloudy, deteriorated, or unidentified fluids;
• mixing fluids of different specifications or different types;
• using fuel or lubricants that do not meet machine requirements;
• using fluids that have been exposed to dust, moisture, or contaminants.

Principle

Any contaminated fluid that "still appears usable" must not continue to be used.

7.3 Basic Requirements Before Fluid Replenishment

Before replenishing any fluid, it must be confirmed that the machine is in a safe condition.

Requirements Before Filling

• park the machine on level ground;
• stop the engine;
• remove the ignition key, where applicable;
• confirm that the relevant systems have stopped operating;
• where necessary, wait for hot components to cool down;
• use clean filling tools and containers;
• confirm that the filler opening, filling area, and surrounding area are clean.

Prohibited Actions

• refueling while the engine is running;
• opening a fluid system casually while it is hot or pressurized;
• replenishing fluids while the machine is not stably parked.

7.4 Fuel Filling Requirements

Fuel must be filled only through the designated filler opening, and fire prevention and contamination prevention requirements must be strictly followed.

Operating Requirements

• refuel only through the machine’s designated fuel filler opening;
• clean the area around the fuel tank opening before refueling;
• use clean fuel that meets the specified requirements;
• prevent dust, moisture, and foreign matter from entering the tank during refueling;
• after refueling, immediately tighten the fuel cap and confirm good sealing.

Prohibited Actions

• adding fuel to the fuel system from any non-designated location;
• using unclean containers for refueling;
• allowing contaminants, wiping cloths, plastic, or foreign matter to enter the fuel tank;
• continuing to operate the machine while the fuel cap is loose or damaged.

7.5 Fuel Level Control Requirements

A reasonable expansion space must be left when refueling. Overfilling is prohibited.

Requirements

• do not fill the fuel tank to a completely full or overflowing condition;
• keep the necessary space for thermal expansion;
• after refueling, check whether there is overflow, leakage, or poor sealing of the fuel cap.

Risk Statement

Overfilling the fuel tank may lead to:

• fuel overflow after thermal expansion;
• increased fire risk;
• increased fuel vapor emission;
• environmental contamination;
• fuel accumulation and contamination around the tank opening.

7.6 Fire and Explosion Prevention Requirements

Fuel and some maintenance fluids are flammable. During replenishment and refueling, ignition sources and fire risks must be strictly controlled.

Operating Requirements

• the refueling and fluid replenishment area must be kept away from open flames, sparks, and hot heat sources;
• smoking is prohibited whenever the fuel tank is open or refueling is in progress;
• welding, cutting, or spark-producing work is prohibited during refueling;
• avoid the buildup of static electricity before refueling;
• if a fuel leak occurs, clean it up immediately before continuing the work.

Prohibited Actions

• starting the machine while refueling;
• refueling while the engine is running;
• approaching open flames while the fuel tank is open;
• continuing work before spilled or leaked fluids have been cleaned up.

7.7 Cleanliness and Contamination Control Requirements

The key to liquid-system maintenance is not only replenishment, but also contamination prevention.

Requirements

• all filler openings must be kept clean;
• filling tools, funnels, oil guns, and containers must be clean;
• opened fluid containers must be sealed promptly;
• fluids that have been opened and left exposed for a long period must not continue to be used in critical systems;
• wipe away any spilled fluid after filling is completed.

Principle

Contamination in fluid systems often causes long-term damage more easily than insufficient fluid level.