The 4 Main Sections
Every counterbalance forklift has four major assemblies:
| Section | What It Includes | What It Does |
|---|---|---|
| Mast & Carriage | Mast, rails, carriage, forks, chains | Lifts and positions the load |
| Chassis & Counterweight | Frame, counterweight, overhead guard, floor | Carries everything, balances the load |
| Drive & Steering | Drive axle, wheels, steering axle, transmission | Moves and turns the truck |
| Power System | Battery/engine, motor, hydraulics, controller | Provides energy to lift and drive |
Forklift Parts Name
1. Mast & Carriage Parts (The Lifting System)
| Part Name | What It Does | Typical Replacement Cost | Most Common Failure |
|---|---|---|---|
| Mast | The vertical structure that lifts the carriage | $2,000–$6,000 | Bent rails after collision |
| Mast rails | The channels the carriage slides in | $800–$2,000 | Wear, scoring, misalignment |
| Carriage | The frame that holds the forks | $600–$1,500 | Bent or cracked forks mount |
| Forks | The prongs that carry the load | $400–$1,200 per pair | Heel wear, bending, cracks |
| Lift chains | Steel chains that raise the carriage | $200–$500 | Stretching, kinks, snaps |
| Lift cylinder | Hydraulic cylinder that raises the mast | $800–$2,000 | Seal leaks, scored rod |
| Tilt cylinder | Tilts the mast forward/back | $500–$1,500 | Seal leaks |
| Mast rollers | Bearings that guide carriage travel | $100–$300 each | Flat spots, wear |
| Side-shifter | Moves forks left/right (attachment) | $800–$2,500 | Hydraulic leak, bent frame |
| Fork positioner | Adjusts fork width (attachment) | $1,000–$3,000 | Cylinder leak |
The chain rule: If a lift chain snaps while a load is elevated, the load drops. Inspect chains for stretch (compare to chain gauge) and kinks before every shift.
2. Chassis & Body Parts
| Part Name | What It Does | Typical Replacement Cost | Most Common Failure |
|---|---|---|---|
| Chassis / Frame | The main body that holds everything | Not replaceable (weld repair) | Cracks near mast mount |
| Counterweight | Cast iron block at the rear that balances loads | $500–$1,500 | Missing (stolen/sold), cracked bolts |
| Overhead guard | Roof structure protecting operator | $400–$1,000 | Bent after tip-over |
| Operator floor / mat | Floor of the operator compartment | $100–$300 | Worn through |
| Seat (sit-down models) | Operator seat with suspension | $200–$800 | Suspension worn, tears |
| Steering wheel & column | Steering input | $150–$500 | Loose column |
| Hood / engine cover | Covers engine or battery | $200–$600 | Cracked, missing latches |
| Battery cover / compartment | Battery enclosure (electric) | $300–$800 | Corrosion from acid |
| Nameplate / data plate | Spec plate on chassis | $50–$150 (replacement from mfr) | Missing, illegible |
| Counterweight cover | Plastic/metal cover over counterweight | $100–$300 | Cracked |
3. Drive & Steering Parts
| Part Name | What It Does | Typical Replacement Cost | Most Common Failure |
|---|---|---|---|
| Drive axle | Transfers power to drive wheels | $2,000–$5,000 | Gear wear, bearing failure |
| Drive motor (electric) | Propels the truck | $1,500–$4,000 | Brush wear (DC), bearing failure (AC) |
| Transmission (diesel) | Shifts gears | $2,500–$6,000 | Clutch/gear wear |
| Steering axle | Front/rear axle that turns the wheels | $1,500–$3,500 | Kingpin wear, loose steering |
| Steering motor (electric) | Powers the steering | $800–$2,000 | Brushes, controller fault |
| Load wheels | Front wheels that carry the load | $100–$300 each | Flat spots, wear |
| Drive tires | Rear/front drive tires | $150–$500 each | Wear, cuts, chunking |
| Wheel hubs / bearings | Support wheels | $200–$500 each | Bearing noise, play |
| Brakes (service) | Stops the truck | $300–$1,000 | Worn pads/shoes |
| Brake discs / drums | Friction surface | $200–$600 | Scoring, warping |
| Parking brake | Holds truck when parked | $150–$400 | Cable stretch, adjustment |
| Steering tie rods / linkage | Connects steering to wheels | $150–$400 | Loose joints, play |
4. Power & Hydraulic Parts
| Part Name | What It Does | Typical Replacement Cost | Most Common Failure |
|---|---|---|---|
| Battery (electric) | Energy storage | $800–$18,000 | Sulfation, cell failure |
| Battery charger | Charges the battery | $500–$3,000 | Controller board failure |
| Hydraulic pump | Pressurizes hydraulic fluid | $800–$2,500 | Cavitation, seal failure |
| Hydraulic control valve | Directs fluid to cylinders | $500–$1,500 | Sticky spool, leak |
| Hydraulic hoses | Carry pressurized fluid | $50–$300 each | Cracks, burst, chafing |
| Hydraulic fluid / oil | Working fluid | $100–$300 per fill | Contamination, water |
| Hydraulic filter | Cleans the fluid | $20–$80 | Clogged |
| Engine (diesel/LPG) | Power source (IC trucks) | $4,000–$10,000 rebuild | Head gasket, bearings |
| Starter motor | Starts the engine | $200–$600 | Worn brushes |
| Alternator | Charges the engine battery | $200–$500 | Bearing failure |
| Radiator / cooling fan | Cools the engine | $300–$800 | Clogged fins, leak |
| Air filter | Cleans intake air | $20–$60 | Clogged |
| Fuel tank / LPG tank | Fuel storage | $300–$1,000 | Leaks, corrosion |
| Controller (electric) | Manages motor power | $1,000–$3,500 | Overheating, short circuit |
| Contactor | Switches high current | $200–$600 | Pitted contacts |
| Wiring harness | Connects all electrical | $500–$2,000 | Chafing, corrosion |
The 5 Parts That Fail Most Often (Statistics)
Based on service records across thousands of forklifts:
| Part | % of All Repair Calls | Typical Cause |
|---|---|---|
| Tires | 25% | Normal wear, improper inflation, rough floors |
| Battery & charging system | 20% | Watering neglect, overcharging |
| Hydraulic leaks (cylinders, hoses) | 15% | Seal wear, hose chafing |
| Brakes | 10% | Normal wear, operator abuse |
| Controller / electrical | 10% | Condensation, overheating |
That's 80% of repair calls from five parts — all of which are caught by the daily inspection checklist.
Forklift Parts Terminology Cheat Sheet
When you call a supplier, use these names:
| You Say | You Mean |
|---|---|
| 'Fork carriage' | The frame holding the forks |
| 'Lift chains' | The chains that raise the carriage |
| 'Mast rails / channels' | The vertical guides |
| 'Load wheels' | The front wheels |
| 'Steer wheels / steering tires' | The rear wheels (on most counterbalances) |
| 'Tilt cylinder' | Tilts mast forward/back |
| 'Side-shifter' | Moves forks side to side |
| 'Carriage plate / backrest' | The vertical backplate behind forks |
| 'Overhead guard' | The roof cage |
| 'Counterweight' | The cast iron rear block |
| 'Hydraulic control valve' | Directs oil flow |
| 'Drive axle' | The axle with drive wheels |
| 'OPS sensor' | Operator presence system |
| 'Data plate' | The spec/nameplate |
How to Order the Right Part (Every Time)
Step 1 — Find the data plate. Model number + serial number. Without these, no supplier can guarantee fit.
Step 2 — Take a photo of the part from two angles, with a ruler for scale. A photo of a 'hydraulic cylinder' is 100× more useful than a description.
Step 3 — Look for a part number stamped on the part. Most manufacturers stamp their own part number on castings, cylinders, and motors.
Step 4 — State the capacity and lift height of the truck — some parts (mast, carriage, forks) are capacity-specific.
Step 5 — Ask for the OEM part number cross-reference if buying aftermarket. A good supplier can tell you if the aftermarket part matches the OEM spec.
The Parts You Should Keep in Stock
For a small fleet (1–5 forklifts), keep these on the shelf:
| Part | Quantity | Cost |
|---|---|---|
| Hydraulic hoses (common sizes) | 2–4 | $100–$400 |
| Hydraulic fluid | 20 L | $60–$120 |
| Air/oil filters (per model) | 2 each | $60–$150 |
| Fuses and relays | Assorted | $30–$80 |
| Light bulbs / LEDs | 4–8 | $40–$100 |
| Tires (spare set for the busiest truck) | 1 set | $400–$1,200 |
| Chain gauge + wear gauge | 1 each | $50–$100 |
| Grease, oil, basic seals kit | — | $100–$200 |
Budget: $800–$2,500 to stock parts that prevent most downtime. Compare that to one emergency service call ($300–$800) plus downtime ($500–$2,000/day) — the stock pays for itself on the first breakdown.
The Bottom Line
Knowing the names of forklift parts isn't just mechanic knowledge — it's procurement knowledge. The difference between 'the thing that lifts the forks' and 'lift chains, part number 514-34-105' is the difference between a 2-day repair and a 3-week repair.
Learn the 30 parts in this guide. Keep the cheap ones in stock. Check the five high-failure parts (tires, battery, hydraulics, brakes, electrical) on the daily inspection. That's the entire maintenance program, distilled.
About the Author
Edward handles export sales at Hebei Maoxiang Technology, helping international buyers with forklift pricing, configuration, shipping, and export documentation. He has helped customers in 80+ countries find the right machine — and the right spare parts to keep it running.
Hebei Maoxiang Technology Co., Ltd.
- Web: forkliftlift.com
- Email: sales@maoxiang-tech.com
- Electric forklifts | Diesel forklifts | Reach trucks | Pallet jacks | Spare parts & attachments
- FOB Tianjin | CE certified | 20–35 day lead | 24/7 quote support
