"N14 and N18 Engine: High-pressure Pump Repair Instruction. INFORMATION The current version of ISTA/D Repair Instruction 13 51 017, ""Removing and installing or replacing high-pressure pump (N14, N18)"" has a procedure error. The current version of the Repair Instruction states to replace the high-pressure supply hose on the N14 engine. The Repair Instruction also states not to replace the high-pressure supply hose on the N18 engine. The N18 portion of the Repair Instruction is incorrect. As an interim solution, follow the procedure outlined below until this portion of the Repair Instruction is corrected. https://www.minitis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/159...2/5/2014 Page 2 of 2 Bosch High-pressure Pump (1): All vehicles equipped with the N18 engine and produced from 3/2012 and later When the engine is fitted with a Bosch High-pressure Pump (1), the highpressure supply hose (2) MUST NOT be replaced when making repairs. The remaining portion of the Repair Instruction and tightening torques is correct. Refer to EPC for the applicable part numbers when making repairs."