Class 4 (4th Engineer) MEKG 📅 May 2024

Exam Question

(a) Sketch a two-ram type hydraulic steering gear with a single Electro-hydraulic pumping unit. Show the hunting gear arrangement and indicate valve positions (8)

(b) State the purpose of, and describe the operation of:

(i) Hydraulic shock/ buffer valves (3)

(ii) On replenishing tank (2)

(iii) Hunting gear (3)

Reference Answer

### (a) Sketch of a Two-Ram Hydraulic Steering Gear
**Description for Sketch:**
The sketch should depict a Rapson Slide type two-ram steering gear arrangement. The central component is the rudder stock with a tiller arm. A crosshead is mounted on the tiller, which can slide within the forked ends of the two opposed hydraulic rams.
1. **Hydraulic Cylinders & Rams:** Two hydraulic cylinders are shown, one on the port side and one on the starboard side. Each contains a ram connected to the tiller via the crosshead.

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