Doosan Forklift D33S-7

Safety Warning: Read and understand the warnings and instructions contained in the Safety section of this manual, before performing any operation or maintenance procedures.

Engine Oil & Filter (G424P(E) Engine Only) - Change

Operate lift truck a few minutes to warm oil. Park the lift truck with the forks lowered, parking brake applied, transmission in neutral and the engine stopped.

Raise rear of lift truck off ground and block securely.

Warning: Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

Remove the crankcase drain plug and allow oil to drain into a suitable container. Clean and install drain plug.

Raise the hood and seat assembly.

Remove and discard oil filter element.

Wipe sealing surface of oil filter element mounting base. Make sure the entire old gasket is removed.

Visually inspect forks for cracks, especially in the heel section, around the mounting brackets, and all weld areas.

Inspect for broken or jagged fork tips, bent or twisted blades and shanks.

Make sure positioning lock is in place and working.

Lock the forks in position before using the truck.

Remove all defective forks from service.

Every 1500 Service Hours or 9 Months

1) Inspect Ignition System (LP, Dual Fuel Engine Only)

2. Remove and inspect the spark plugs. Replace as required.

3. Test secondary cables with an Ohmmeter. If the maximum resistance is higher than 25 kOhms, repair and/or replace(G424F(E) engine only).

4. Inspect the ignition coil for cracks and heat deterioration. Visually inspect the coil heat sink fins. If any fins are broken replace as required.

2) Replace Spark Plugs (LP, Dual Fuel Engine Only)

2. Using a gentle twisting motion remove the high voltage cables from the spark plugs. Replace any damaged cables.

Steps to change engine oil and filter

Air Intake System - Check, Clean

Steps to check and clean air intake system

Steps to check and adjust belts

Steps to lubricate mast hinge pin

Tilt Cylinders - Check, Adjust, Lubricate

Warning: This procedure requires trained personnel with PPE!

Is the engine warmed up using LPG?

Tank cock closed and LPG in fuel line consumed?

Drain plug removed and tar drained from LP regulator (vaporizer)?

Tray placed below to prevent engine room from getting dirty?

Sealant applied to drain plug and assembled after finishing work?

Sign off on the tar draining procedure