Clark EC20, EC25, ECS30 36-48 Volt W Model 210 Control Forklift Planned Maintenance and Adjustment Procedures Manual (PMA385)

These Clark EC20, EC25, and ECS30 electric forklifts usually live indoors—warehouses, docks, and production floors—doing tight maneuvering and steady pallet work. This planned maintenance and adjustment manual helps you keep the truck reliable by spelling out how and when to service key systems and fine‑tune the Model 210 control setup. When you’ve got an intermittent lift issue or sluggish travel response, this is what you use to verify adjustments, trace basic faults, and get the truck back to normal without a lot of guesswork.

Applications & Use Cases

• Plan routine services so you don’t miss critical checks on the drive, hydraulic, and electrical systems.
• Verify control adjustments when operators complain about poor acceleration, rough direction changes, or inconsistent lift behavior.
• Trace simple electrical issues on the 36–48V system before calling in deeper diagnostics.
• Check and reset linkages after replacing components like contactors, pedals, or control handles.
• Confirm your work after repairs by following the recommended adjustment and test steps.

FAQ

Q: Can I use this manual on a tablet in the shop?

A: Yes, it’s practical to keep it open on a tablet so you can zoom in on procedures while working at the truck.

Q: Is it worth printing parts of this manual?

A: Many techs print the key maintenance and adjustment pages to keep in a job folder or service truck.

Safety Note

Always de-energize and secure the truck before doing any inspection, adjustment, or repair work.

Clark EC20, EC25, ECS30 36-48 Volt W Model 210 Control Forklift Index:

## Additional Procedures and Checks

Pump Motor Operating Switch Check & Adjustment Procedures
Tilt Cylinder Drift Test
Tilt Cylinder Check & Adjustment Procedures
Hydraulic Sump Tank – Fill
Hydraulic Sump Tank Filter Service Procedures
Hydraulic Sump Tank – Drain
Electric Truck Battery Service Procedures – Remove/Replace
Hydraulic System Pressure Checks – Main Hydraulic Pump
Hydraulic Lift & Tilt Lines
Electric Motor Maintenance, PUMP – Commutator Check Chart
Seat Brake Linkage Check & Adjustment Procedures
Electric Motor Maintenance, DRIVE (TRACTION)
Drive (Traction) Motor Brush Remove/Replace
Drive (Traction) Motor Remove/Replace
Drive (Traction) Motor Brake Drum Remove/Replace
Contactor Check & Adjustment Procedures (Pump)
Recommended Tools for Contactor Check & Adjustments
1A Contactor Check & Adjustments
Contactor Interlock Adjustment
Forward & Reverse Contactor Check & Adjustment
Field Weakening Contactor Check & Adjustment Procedures
SCR Cards – PMT/SRO & Field Weakening (trucks so equipped)
Steer Gear, Linkage & Axle Check & Adjustment Procedures
Steer Wheel Bearings Clean, Repack/Adjust
Lubrication Charts & Cold Storage Lubrication Charts
Steer Gear Adjustment Procedures
Accumulator Charging Procedures
Upright Standard & Hi-Lo Carriage Roller Check & Adj. Procedures
Upright Standard & Hi-Lo Roller Check & Adjustment Procedures
Upright Compound Cylinder Bleeding Procedures
Upright Downshift Test
Upright Lift Chain Check & Adjustment Procedures

Clark