Doosan Dual Fuel Engine GC15S-5

Pressure Regulator/Converter Inspection

Pressure regulator/converter visually inspected for coolant leaks

Fuel Trim Valve Inspection (FTV)

Fuel trim valves visually inspected for abrasions or cracking

Fuel trim valves replaced if necessary

Blow-by test for Fuel Trim Valves

Electrical connector to the FTVs disconnected

Vacuum line from the FTVs to the pressure regulator/converter disconnected at the converter’s tee connection

Air blown through the vacuum line connected to the FTVs

!CAUTION: Prolonged and repeated contact with mineral oil will result in the removal of natural fats from the skin, leading to dryness, irritation and dermatitis.

In addition, used engine oil contains potentially harmful contaminants which may cause skin cancer. Exercise caution in order to minimize the length and frequency of contact of your skin to used oil.

In order to preserve the environment, used oil and used oil filter must be disposed of only at designated disposal sites.

2) Remove the oil drain plug, and drain the oil into a container.

2) Check and clean the oil filter installation surface.

Verify that the TMAP sensor (F) is mounted tightly into the manifold or manifold adapter (E), with no leakage.

If the TMAP is found to be loose, remove the TMAP retaining screw and the TMAP sensor from the manifold adapter.

Visually inspect the TMAP O-ring seal for damage. Replace as necessary.

Apply a thin coat of an approved silicon lubricant to the TMAP O-ring seal.

Re-install the TMAP sensor into the manifold or manifold adapter and securely tighten the retaining screw.

Sign off on the Tmap Sensor Check

Loosen the timing belt upper cover bolt (B) and disconnect the upper cover (A)

Insert the hex wrench to the adjuster groove and turn it counterclockwise to move the arm indicator in the middle of the base groove

CAUTION: If it is turned in reverse direction, be sure that the tensioner may function abnormally

Tighten the tensioner fixing bolt with the arm indicator fixed

Rotate the crankshaft 2 turns clockwise and make sure the auto tensioner arm indicator is placed in the middle of the base groove

If the arm indicator is out of the middle, loosen the bolt and repeat the previous procedure

Install the timing belt upper cover (A) and tighten the bolt(B)

Sign off on the timing belt tension adjustment

Park the lift truck in an authorized refueling area with the forks lowered, parking brake applied and the transmission in Neutral.

Close the fuel shutoff valve on the LP-fuel tank. Run the engine until the fuel in the system runs out and the engine stops.

Scribe a line across the filter housing covers, which will be used for alignment purposes when re-installing the filter cover.

Remove the cover retaining screws (1).

Remove top cover (2), magnet (3), spring (4), and filter element (7) from bottom cover (5).

Replace the filter element (7).

Check bottom cover O-ring seal (6) for damage. Replace if necessary.