1. Manuals
  2. Brands
  3. D-I INDUSTRIAL Manuals
  4. Microphone system
  5. DMT 220DL
  6. Instruction manual

D-I INDUSTRIAL DMT 220DL Instruction Manual

Marine transmission
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
The users should read this manual thoroughly before operation and
observe the operating method and precautions for more effective operation.
ARINE TRANS ISSION
INSTRUCTION ANUAL
ODEL
D T 220DL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DMT 220DL and is the answer not in the manual?

Questions and answers

Summary of Contents for D-I INDUSTRIAL DMT 220DL

  • Page 1 The users should read this manual thoroughly before operation and observe the operating method and precautions for more effective operation. ARINE TRANS ISSION INSTRUCTION ANUAL ODEL D T 220DL...
  • Page 2 Introduction This manual contains descriptions of construction, operation principle, correct operation, handling method, caution for installation, simple maintenance and overhaul, etc. regarding D-I Marine transmission (DMT220DL). APPLICATION HYDRAULIC MARINE TRANSMISSION MODEL DMT220DL To use this product safely and correctly the users must read this manual thoroughly and understand it enough before operation.
  • Page 3 C O N T E N T S CHAPTER 1 - - - - - - - - - - OVERVIEW CHAPTER 2 - - - - - - - - - - STRUCTURE CHAPTER 3 - - - - - - - - - - PRINCIPLES OF OPERATION CHAPTER 4 - - - - - - - - - - HYDRAULIC SYSTEM CHAPTER 5...

  • Page 4: Specifications

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 1 – OVERVIEW 1-1. FUNCTION The D-I marine transmission described in this manual is the power-transmitting device which transmits the power generated from Engine to Propeller. The main functions are the ahead, neutral, astern and reduction of speed at fixed rate.
  • Page 5 If D-I marine transmission needs to be used for the engine with clock wise rotation, please contact D-I Industrial Co., Ltd. for consultation. [ C.C.W ENGINE ] [ C.W ENGINE ]...
  • Page 6 Responsibility for Torsional vibration Torsional vibration analysis is carried out by the engine maker or independent consultants. D-I Industrial Co., Ltd. can provide relevant data for the analysis of marine transmission supplied by D-I Industrial Co.,Ltd. The equipment installer is responsible for ensuring the torsional compatibility of the propulsion system.
  • Page 7 THE MANUAL OF MARINE TRANSMISSION 2-2. INPUT SHAFT SUB ASS’Y 1) Outer Part The outer part has the grooves in regular shape for the rubber blocks to be assembled to transmit the power. It is assembled to engine flywheel by screws.
  • Page 8 THE MANUAL OF MARINE TRANSMISSION 2-3. ASTERN SHAFT ASS‘Y Key slot for driving gear of hyd’ pump The astern shaft Ass’y consists of the same parts as the input shaft Ass’y except for the astern shaft sub Ass’y and pump driving block at the rear of shaft.
  • Page 9 THE MANUAL OF MARINE TRANSMISSION 2-5. OUTPUT SHAFT ASS‘Y 1) Output shaft Output Shaft has the support by 2 taper roller bearings and shrink-fitted with output gear. ON the input side’s taper, the output coupling is assembled. 2) Output gear The output gear is shrink-fitted to output shaft and engaged with the input and astern pinion at all times.
  • Page 10 THE MANUAL OF MARINE TRANSMISSION 2-7. PUMP HOLDER GROUP pump holder made cast iron. hydraulic pump circumscribed gear type, and bolted on the pump holder. The pump driving gear is driving block and spline fitted at the end of the astern shaft, and rotated at the same speed as that of engine, but in the opposite to engine direction.
  • Page 11 THE MANUAL OF MARINE TRANSMISSION 2-9. SELECTOR VALVE ASS’Y [Option] Trolling valve position Selector valve group Trolling valve ass’y Selector valve 1) Selector valve body The selector valve body is made of cast iron, and bolted on the valve holder. The main components are the pressure-regulating valve and piston to control the operating pressure and orifice plate to adjust the impact and time when operating.

  • Page 12: Oil Cooler

    THE MANUAL OF MARINE TRANSMISSION 2-10. HYDRAULIC PUMP ASS’Y The hydraulic pump is circumscribed gear type and bolted on the pump holder. The pump driving gear is driving block and spline fitted at the end of the astern shaft, and rotated at the same speed as that of engine, but in the opposite to engine direction.

  • Page 13: Chapter 3 - Principles Of Operation

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 3 - PRINCIPLES OF OPERATION 3-1. OVERVIEW D-I Marine transmission is operating with the hydraulic pressure and must be operated within the limits of rated load capacity, and has the same capacity and reduction ratio for the ahead and astern actuation. Therefore it can be appropriately used in the application of twin engine system.
  • Page 14 THE MANUAL OF MARINE TRANSMISSION 3-3. POWER TRANSMISSION (Refer to Fig.2) 1) Neutral position ① The power is transmitted from the outer part bolted to engine flywheel to inner part with rubber blocks in order. ② The inner part transmits the power to input coupling and then the power is transmitted to input shaft through the input coupling’s spline.

  • Page 15: Chapter 4 - Hydraulic System

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 4 - HYDRAULIC SYSTEM 4-1. OVERVIEW The hydraulic system is shown in Fig.4. The oil contained in the marine transmission flows into the pump through the oil strainer, and high pressure oil that is discharged from the gear pump is led to the selector valve body through the oil cooler, the secondary oil filter and the valve holder.
  • Page 16 THE MANUAL OF MARINE TRANSMISSION 4-2. SELECTOR VALVE GROUP 1) Flow of the pressured oil by operation of the selector valve is shown in [Fig.5]. The pressured oil discharged from the gear pump is led to the direction of the arrow "P" in [Fig.6], and then into the hole of the valve stem.

  • Page 17: Installation

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 5 - INSTALLATION nstallation of marine transmission have an important effect on the function and performance of the marine transmission. REMARK GAUGE / TOOL SPEC. DIAL GAUGE 0.01 MAGNET BASE THICKNESS GAUGE 0.01 ~ 1 WRENCHES M16 ~ M32 The Key, which is used for starting a marine engine, should be pulled off...
  • Page 18 THE MANUAL OF MARINE TRANSMISSION Engine Engine Shim Shim Bracket Engine bed Marine gearbox Bolts for Housing and Brackets of marine transmission should be tightened firmly. If not, a noise, vibration or breakage of housing can be occurred. 3) Alignment The alignment of marine transmission's output shaft coupling and the propeller shaft coupling should be precise and the allowable deviation is as indicated in the following figures :...

  • Page 19: Chapter 6 - Operation

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 6 - OPERATION 6-1. PREPARATIONS FOR OPERATION 1) Check the whole parts of marine transmission and if the bolts, nuts, etc. are loosened. 2) Check the oil level with oil level gauge and neutral pressure. 2-1) Check if the neutral pressure(1~5 kgf/㎠) is formed within 30 seconds at idle RPM after the engine starts up.
  • Page 20 THE MANUAL OF MARINE TRANSMISSION to "Trouble shooting". If it is not repairable on the spot, enter the nearest port by using the emergency screws and then repair it. Shifting of selector valve lever to ahead and astern position must be taken at 50% of rated engine RPM or under. * How to use the emergency screws 1) First, stop the engine.
  • Page 21 THE MANUAL OF MARINE TRANSMISSION [Fig-7] Position of Emergency Screw [Fig-8] Disassembling position of emergency screws [Fig-9] Position of Emergency Screw - 18 -...

  • Page 22: Oil Filter

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 7- MAINTENANCE & OVERHAUL 7-1. OVERVIEW All the rotating parts of the marine transmission are lubricated with oil in the case. The followings are the check points for maintenance of the proper performance. 7-2. OIL 1) Use only SAE-API service class SAE#30 engine oil.
  • Page 23 THE MANUAL OF MARINE TRANSMISSION 7-5. OVERHAUL The overhaul period of the marine transmission is the same as that of the engine. If any worn out or damaged part is found, replace it according to the followings : 1) Replace all of the gaskets, O-rings, and other rubber products in every overhaul.

  • Page 24: Chapter 8 Troubleshooting

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 8 TROUBLESHOOTING If something is wrong with the marine transmission, refer to[Table2]. Symptom Cause Remedy Screen filter clogged Disassemble and clean Secondary oil filter clogged Disassemble clog and clean Oil pressure regulating piston Disassemble clog and clean stuck in the control valve Seal damaged or worn Replacement...

  • Page 25: Chapter 9 - Disassembly And Assembly

    THE MANUAL OF MARINE TRANSMISSION CHAPTER 9 – DISASSEMBLY AND ASSEMBLY It is explained to disassemble and assemble the marine transmission by part separately. The disassembly and assembly should be carried out as being careful in the mentioned cautions. Assembly and disassembly should be performed in where there is no dust and foreign substance, etc.
  • Page 26 THE MANUAL OF MARINE TRANSMISSION 9-1. Disassembly 1) To disassemble the marine transmission. (When it is dismounted from a engine) ① Drain the oil from the marine transmission after disassembling the drain plug. ② Disassemble the cooling water pipe of engine from the oil cooler of marine transmission.
  • Page 27 THE MANUAL OF MARINE TRANSMISSION ⑥ Disassemble the output shaft coupling. (Refer to P.33) ⑦ After disassembling the seal carrier, disassemble the case cover assembled to case. ⑧ Disassemble the input coupling. ⓐ Do not disassemble the input coupling Ass’y, unless its replacement is necessary.
  • Page 28 THE MANUAL OF MARINE TRANSMISSION Check Point ☞ [Refer to Table-1 abrasion limit for main components] 4) To disassemble the astern shaft Ass’y ① The disassembly process of astern shaft Ass’y is the same as that of input shaft Ass’y. Check Point ☞...
  • Page 29 THE MANUAL OF MARINE TRANSMISSION 5) To disassemble the output shaft group ① When disassembling the bearings, please use the extraction hole for bearings of output shaft. * Unless the replacement is necessary, please do not disassemble the bearings at both ends of output shaft.
  • Page 30 THE MANUAL OF MARINE TRANSMISSION 6) To disassemble the selector valve group ① Remove the hexagonal socket screws and then disassemble the level group. ② After removing the screws, disassemble the piston cover, plate, orifice plate, plate gasket, piston, outer spring, trolling spring, ball, check valve spring, regulator pressure valve in order.
  • Page 31 THE MANUAL OF MARINE TRANSMISSION 9-2. To assemble the marine transmission Assembly shall be performed in the reverse order of disassembly. Please clean all the parts to remove dust or metal chips, etc. foreign substances before assembling them. Afterwards start the assembly as observing the following. 1) Replace the parts which cause oil leakage.
  • Page 32 THE MANUAL OF MARINE TRANSMISSION ⑤ The input shaft Ass’y is assembled in two steps. The input shaft Ass’y is assembled to spline of input coupling Ass’y as 1 step and the inner teeth of steel plates in the input shaft Ass’y are assembled to outer teeth of pinion as 2 step.
  • Page 33 THE MANUAL OF MARINE TRANSMISSION 9-3. Adjustment of shims Adjust the clearance of taper roller bearings holding the input shaft, astern shaft, output shaft and pinions by shims as [Fig-13~16]. 1) Output shaft side: Carry out press fit(0.05 ~ 0.1mm) as pushing the taper roller bearing of output side towards input side.
  • Page 34 THE MANUAL OF MARINE TRANSMISSION 4) Astern shaft side: Adjust the clearance to –0.05 ~ 0mm as pushing the taper roller bearing of output side towards input side. [Fig-16] Shim adjustment for astern shaft 1. The shim adjustment should be performed very accurately. 2.
  • Page 35 THE MANUAL OF MARINE TRANSMISSION OPTION Live P.T.O. [Structure] This transmission has the input shaft Ass'y with PTO(Power take-off) function. It drives the hydraulic pumps with equipped specification of SAE A, B, C pinion coupling and a pump attachment plate are supplied as options. VALVE HOLDER ASS'Y 1) INPUT SHAFT ASS'Y Input shaft ass'y is designed to be capable to transmit the power by connection of...
  • Page 36 THE MANUAL OF MARINE TRANSMISSION OUPLING -How to Disassemble Output oupling FIGURE INSTRUCTION 1) Assemble the support plate as Fig. - It is to prevent the output coupling from popping out in a moment by oil pressure during disassembly. 1) Pour oil into the tapped hole on the output coupling and then screw the bolt in the tapped hole.
  • Page 37 THE MANUAL OF MARINE TRANSMISSION ANNEX I TABLE OF PERIODIC OVERHAUL ○ Check, ◎ Exchange Check / Exchange (year) NAME Parts to Using Remark *Gasket, paper Cover, Case, Holder etc. *Gasket, copper Drain/Magnet Plug etc. Screen/Secondary Filter *O Ring Air Breather Ass'y etc. Input Coupling, *Seal, oil Output Shaft...
  • Page 38 THE MANUAL OF MARINE TRANSMISSION ANNEX Ⅱ PARTS ORDER SHEET Fill out the blanks below and get in touch with D-I distributor DATE COMPANY NAME ADDRESS TEL. FAX. PARTS ORDER LIST Gear Ratio MODEL Serial No. Installation ENGINE date NAME PARTS NO.
  • Page 39 D-I Industrial Co.,Ltd. warrants against defective materials or workmanship for a period of twenty-four(24) months from the date of original shipment by D-I Industrial Co., Ltd. to original customer or twelve(12) months from the first sea trial, whichever occurs first.
  • Page 40 he contents of this manual can be modified without prior notice for the improvement of quality. ANU NO. 2009N00D T FACTORY : (52781) 13, Namgang-ro 1367 beon-gil, Jinju-si, Gyeongnam-do, Korea TEL. : +82-55-760-5500 FAX. : +82-55-755-9188 E-mail : dicl@d-i.co.kr : http://www.d-i.co.kr printed: 2020.09.

Table of Contents