2400 Series Cast Hatch Routine Maintenance & Lubrication

• Clean shop towel / lint-free cloth
• Small brush for precise grease application
• Protective gloves (nitrile)

• Vickers Oils BIOGREASE EP2 (substitutes Mystik JT-6 No. 2)
• Vickers Oils VICKERLUBE BIO WDF (penetrating bio-spray)
• CRC Heavy-Duty Marine Cleaning Wipes (50 pcs)
• CRC Silicone Stick for Gaskets (50 ml)

Operate integral T-Handle

Lift and operate the integral T-HANDLE to ensure the mechanism is cycling smoothly and functioning properly without mechanical binding.

Lubricate T-Handle shaft diameter

While in the pulled-up (raised) position, lightly lubricate the T-HANDLE shaft around its diameter near the lower end where it contacts the CENTER BUSHING using Vickers Oils BIOGREASE EP2.

Distribute grease to center bushing O-Ring

Lower the T-HANDLE and operate through a few full cycles. This rotational action distributes the shaft grease across the bushing’s internal O-RING, ensuring water exclusion along the drive spindle.

Wipe excess grease from grip

Wipe any excess grease off the upper end of the T-HANDLE shaft where the operator's hand may contact to maintain clean and slip-free deck operation.

Comprehensive mechanism & contact point lubrication

Apply a light, protective film of Vickers Oils BIOGREASE EP2 to the following critical components (lightly coat As Required):

• Actuator pivot sockets: Ball pivots and linkage drive sockets.
• Ramps: Wedge tracks including integral Acetron bumpers.
• Handle U-Channel: Internal sliding guides of the mechanism channel.
• Slotted end of dog arms: Contact surfaces underneath the nylon washer on each standoff.
• Coaming flange: Contact lands where each dog arm clamps against the coaming under tension.

Visual inspection of dogs and seals. Complete lubrication of T-handle shaft, O-ring, and linkage points per steps 1–5. Verify coaming drain scuppers are clear.

Strip old grease residues and salt scale using penetrating bio-fluid. Repack pivot points with fresh EP2 grease and conduct standard chalk testing to verify uniform gasket compression.

Download Maintenance Procedure as PDF

Official shipboard document (DOC #2400-P01) with English on side 1 and Swedish on reverse. Tailored for shipboard Planned Maintenance Systems (PMS) and engine room logs.