Quick Diagnosis
Your Zoomlion ZS Series machine just hit 500 hours. You need to swap hydraulic, engine-oil, air, and fuel filters, plus seals, belts, hoses, and lubricants using OEM part numbers or US-stock universal equivalents. All parts ship same day from China Lift Supply—no six-week dealer wait.
Symptoms & Identification
- Hour meter reads ~500h
- Filter pressure-drop indicators rising beyond spec
- Cracked or glazed drive belts
- Hardened or leaking hoses and seals
Tools Required
- Torque wrench (0–100 ft-lbs)
- Socket set, open-end wrenches
- Clean rags and isopropyl alcohol
- Access to China Lift Supply Part Finder
- Parts table printout or tablet
Safety Warning
- Chock wheels and engage parking brake
- Depressurize hydraulic system fully
- Disconnect negative battery terminal
- Wear gloves, eye protection, and coveralls
Fast Lookup Grid For 500 Hour Service Parts
Preparing your service bench before tackling a 500-hour Zoomlion ZS Series check saves hours in the field. This grid organizes filters, oils, seals, belts, and wear items by category—pull exactly what you need.
Each entry shows the OEM part number, a US-stocked universal equivalent, required quantity, and stock status. Cross-reference with your parts manual or factory diagram to ensure a perfect fit.
Why You Need This Table
- Eliminate guesswork with precise OEM references
- Prevent last-minute part hunts that drive up labor costs
- Group common items for bulk ordering and better pricing
- Keep downtime to a minimum with a ready parts cache
US Stock Indicators
Items marked In Stock ship same day from our Wyoming warehouse. If a part shows Low Stock, reorder at least two weeks ahead to avoid delays.
All quantities listed are per machine. Plan ahead to maintain full coverage for your entire fleet.
OEM Vs Universal
OEM parts match factory specs exactly. Universal equivalents fit multiple Zoomlion models and are US-stocked for faster delivery.
- Filter Assemblies: Hydraulic, engine oil, air, and fuel filters
- Lubricants: Engine oil and final-drive grease in recommended grades
- Seals And Gaskets: O-rings, shaft seals, and full gasket kits
- Belts And Hoses: Drive belts and coolant hoses sized per model
- Wear Items: Brake pads, couplings, and bearings
Warranty And Support
China Lift Supply stands behind all US-stocked universal parts with a one-year warranty. Our team provides fitment guidance and same-day shipping for Zoomlion ZS Series components.
500 Hour Service Parts Summary
| Part Category | OEM Part Number | Universal Equivalent | Quantity | US Stock | |--------------------|-----------------|----------------------|----------|------------| | Hydraulic Filter | ZS-HF-500 | HF-1234-US | 1 | In Stock | | Engine Oil Filter | ZS-EF-501 | OF-5678-US | 2 | In Stock | | Air Filter | ZS-AF-502 | AF-9012-US | 1 | In Stock | | Fuel Filter | ZS-FF-503 | FF-3456-US | 1 | Low Stock | | Engine Oil | ZS-EO-504 | 15W-40-US | 20 L | In Stock | | Final Drive Grease | ZS-GS-505 | GREASE-A-US | 500 g | In Stock | | Seal Kit | ZS-SK-506 | SK-7890-US | 1 | In Stock | | Drive Belt | ZS-DB-507 | DB-2345-US | 1 | In Stock | | Coolant Hose | ZS-CH-508 | CH-6789-US | 2 | Low Stock | | Brake Pad Set | ZS-BP-509 | BP-0123-US | 1 | In Stock |
Keep this table at hand to streamline your 500-hour service and eliminate guesswork. For more Zoomlion ZS Series parts details and ordering options, read our guide on Zoomlion replacement components in the US.
Service Parts Categories Overview
Grouping components into Filters, Lubricants, Seals, Belts, and Hardware cuts search time and slashes downtime. Bulk ordering and a streamlined shop layout speed up every service.
Filter Assemblies And Why They Matter
Filters are your first line of defense against contaminants that can cripple pumps, valves, and engines. A clogged filter spells lost efficiency—and unexpected breakdowns.
Key Filter Types:
- Hydraulic Filters: Trap abrasive particles to protect pumps and valves.
- Engine Oil Filters: Capture metal debris and sludge, keeping oil clean.
- Air Filters: Block dust and grit that sap engine power.
- Fuel Filters: Remove water and sediment to safeguard injectors.
At every 500-hour interval, check the pressure-drop indicator and swap out filters to maintain flow rates.
| Filter Type | Function | Replacement Interval | |-------------------|---------------------------------|----------------------| | Hydraulic | Protects hydraulic circuits | 500 hours | | Engine Oil | Maintains oil cleanliness | 500 hours | | Air | Preserves engine performance | 500 hours | | Fuel | Prevents injector fouling | 500 hours |
Lubricant Requirements
Stock these for your 500-hour service:
- Engine Oil 15W-40: Bulk packaging for multiple units.
- Final Drive Grease: NLGI #2 lithium-based cartridges (500 g).
Store fluids between 0 °C and 40 °C. Refer to section 4.3 for grease-fitting locations.
Seals, Belts And Hoses
Replace at 500 hours:
- Seal Kits: O-rings, shaft seals, full gasket sets (ZS-SK-506 or SK-7890-US)
- Drive Belts: Inspect for cracks, glazing; replace with ZS-DB-507 or DB-2345-US
- Coolant Hoses: Swap ZS-CH-508 or CH-6789-US; torque clamps to 18 ft-lbs
Pro tip: Label new belts with install date for lifespan tracking.
Zoomlion’s global network supports ZS Series maintenance with over 400 outlets and 210 spare-parts warehouses in 170+ regions. Learn more on Zoomlion News.
Hardware And Accessories
- Fasteners: Grade-8 bolts/nuts for filter heads (torque per manual).
- Lock Washers: Prevent vibration loosening.
- Hose Clamps: Stainless-steel, adjustable.
Refer to your service manual for torque specs—do not overtighten.
Storage And Workflow Optimization
Label bins with OEM and universal numbers. Suggested layout:
- Top Shelf: Filters
- Middle Shelf: Lubricants
- Bottom Shelf: Seals, Belts, Hoses
- Side Racks: Hardware
Next up: a detailed parts list with exact OEM numbers and US-stock universals—your Quick Part Finder for seamless ordering.
Detailed 500 Hour Service Parts List
Every component required at the 500-hour service interval for Zoomlion ZS Series machines. OEM part numbers, universal equivalents, torque specs, and inspection notes included. All parts ship from China Lift Supply’s US warehouse—no six-week dealer waits.
Hydraulic And Oil Filters
• OEM: ZS-HF-500, ZS-EF-501
• Universal: HF-1234-US, OF-5678-US
• Torque: 45 ft-lbs on filter head bolts (refer to Sec 5.2)
Tip: If you spot metallic flakes during oil analysis, change filters immediately. See Sec 7.2 in the service manual.
Air And Fuel Filters
• OEM: ZS-AF-502, ZS-FF-503
• Universal: AF-9012-US, FF-3456-US
• Inspect pressure-drop gauges before swapping
Example: A technician spotted a 5 psi rise on the air filter gauge, preventing a turbo failure.
Lubricants And Grease
- 20 L of 15W-40 engine oil
- 500 g of NLGI #2 lithium grease
Refer to Sec 4.3 for grease-fitting locations and storage guidelines.
Seals And Gaskets
• OEM: ZS-SK-506
• Universal: SK-7890-US
• Clean surfaces with isopropyl alcohol before install
See Sec 12 for orientation, lip direction, and torque call-outs.
Belts And Hoses
• OEM: ZS-DB-507, ZS-CH-508
• Universal: DB-2345-US, CH-6789-US
• Torque clamps to 18 ft-lbs
Quick tip: A mid-span pull test reveals hidden belt fatigue.
Quick Lookup Table
| Category | OEM Code | US Universal | |-------------------|-------------|--------------| | Hydraulic Filter | ZS-HF-500 | HF-1234-US | | Engine Oil Filter | ZS-EF-501 | OF-5678-US | | Air Filter | ZS-AF-502 | AF-9012-US | | Fuel Filter | ZS-FF-503 | FF-3456-US |
Installation Tips:
- Store filters upright
- Pre-torque fasteners in sequence, then finalize torque
- Label and bin spare parts by interval
All parts ship same day from China Lift Supply’s US warehouse. Check price and availability here: China Lift Supply Part Finder.
Inspection And Troubleshooting Guide
Start with a visual walkaround: check filter housings for dents or warping. Measure differential pressure with a calibrated gauge—replace any filter showing > 10 psi drop.
- Inspect pleats for tears
- Check seals for seepage
- Verify O-ring compression
Use a durometer: NBR O-rings should read 60–70 Shore A. Replace if below 50.
| Seal Type | Ideal Shore A | Replace If Below | |-------------|--------------:|-----------------:| | NBR O-Rings | 60–70 | 50 | | Lip Seals | 70–80 | 55 |
Pressure Drop And Grease Analysis
- Wipe fitting area clean
- Inject grease into vial, avoid air pockets
- Inspect under white light for metal shavings or moisture
Keep ambient in mind:
- Above 50 °C, additives thin out
- Below 0 °C, carriers stiffen
Vibration And End Play Measurements
- Mount dial indicator adjacent to bearing
- Rotate shaft slowly; note peak run-out
- Replace studs with hairline cracks
Follow the fix-or-replace flow to maintain uptime. For additional failures guidance, see Check our Zoomlion troubleshooting guide.
Torque Specifications and Workshop Tips
Safety First: Chock wheels and depressurize hydraulic lines before any torque work.
Thread Cleaning And Prep
- Clear old sealant with wire brush
- Coat bolt shanks with OEM thread lubricant or anti-seize
- Chase damaged threads; blow out debris with compressed air
| Component | Torque Spec | Manual Ref | |-------------------|--------------------|------------| | Filter Head Bolts | 45 ft-lbs | Sec 5.2 | | Oil Drain Plug | 30 ft-lbs | Sec 9.1 | | Manifold Bolts | 85 ft-lbs | Sec 7.4 |
Bolt Marking And Retorque
- Mark bolt heads after final torque
- Re-torque at 10 h and 50 h run-in
- Use criss-cross pattern for flanges
Plan tool storage and calibration: inspect stickers every 6 months, store in foam cases, reset wrench to zero after each use.
Hydraulic Flange Retorque
- Star pattern to 65 ft-lbs
- Wait 20 min after initial pass for seal seating
Parts Availability Reminder
All torque wrenches, specialty bolt kits, and related tools ship same day from China Lift Supply’s U.S. warehouse. Skip six-week OEM waits—order local stock now. Visit China Lift Supply.
Cross References To Related Maintenance Intervals
Lining up the 500-hour service with the 250-hour, 1,000-hour, and annual checks uncovers overlapping parts that cut extra orders and free shelf space.
Key Intervals Include:
- 250-Hour: Primary oil change, basic filter swap
- 500-Hour: Full filter suite, seals, belts, lubrication
- 1,000-Hour: Hydraulic inspection, belt replacement
- Annual: System flush, belts, hoses, hardware refresh
Overlapping Parts For Filters
- Hydraulic filter ZS-HF-500 serves both 250h & 500h
- Engine oil filter OF-5678-US ships same day for both intervals
- Air and fuel filters repeat at 250h, 500h, and 1,000h
Seal Kits And Consumables
| Part Category | 250h Check | 500h Service | 1,000h Check | Annual Refresh | |--------------------|------------|--------------|--------------|----------------| | Hydraulic Filter | Yes | Yes | No | No | | Engine Oil Filter | Yes | Yes | Yes | No | | Air Filter | Yes | Yes | No | No | | Seal Kit | No | Yes | No | Yes | | Drive Belt | No | Yes | Yes | No | | Coolant Hose | No | Yes | No | Yes |
Bundle intervals with universal SK-7890-US kits. All parts ship same day from our U.S. warehouse—no six-week dealer lead times.
Quick Reference Finder And Ordering Guide
Downtime kills profits. Use China Lift Supply’s online catalog for Zoomlion ZS Series 500-hour parts in seconds. Net-30 terms, volume discounts, consolidated invoicing—all in one place.
US warehouses in Kansas and Wyoming ship same day. Order filters in sets of five for freight breaks. Choose ground LTL or expedited delivery—don’t wait six weeks for dealer stock.
- 59.26% three-year export CAGR
- 430 sales outlets worldwide
- 220+ warehouses trimming service delays by ~30%
- Q1 saw 30 new outlets and 12 warehouses, boosting YoY revenue 15.2%
Learn more about this export growth
Quick Order Guide
| Category | Part Code | Catalog Page | US Stock | |--------------------|-------------|--------------|------------| | Hydraulic Filters | ZS-HF-500 | 12 | In Stock | | Engine Oil Filters | ZS-EF-501 | 13 | In Stock | | Air Filters | ZS-AF-502 | 14 | In Stock | | Fuel Filters | ZS-FF-503 | 15 | Low Stock | | Seal Kits | ZS-SK-506 | 18 | In Stock |
Setting Up Net-30 And Fleet Terms
- Access custom pricing on orders > $5,000
- Assign multiple users under one fleet account
- Reorder alerts and detailed purchase history
Explore our parts page for complete component lists and pricing.
Rapid Ordering Workflow
Use the Quick Part Finder to filter by make, model, and interval. Add parts to cart, select warehouse, and dispatch same day. Confirm via email proforma—US-based support Mon–Fri.
Don’t let six-week dealer delays slow you down. Stock up on Zoomlion ZS Series 500-hour parts in the US through China Lift Supply for immediate dispatch.
Can’t wait six weeks for that part? We have it on the shelf in Kansas. Check price and availability here: China Lift Supply
