TOHATSU MX 50D2 Service Manual page 4

About this manual
Composition and use of this manual
This service manual is designed so that service persons are able to perform repairs correctly.
Understand the following matters well for efficient service and repair.
1 Each chapter begins with the introduction of special tools that are used for the work described.
2 Parts that are serviced in each chapter and their details are presented by using a component composition
diagram.
3 Fastening torques are described in the component composition diagram. In the body text are critical
points of the applicable work.
4 Pictograms indicate that there is an important work instruction for the relevant parts. It also shows the type
of lubricant and its application point(s).
5 The component composition diagrams describe the names of the parts, the number of pieces of the parts
used, size of fasteners and special notes.
6 Specific works are described in detail by using illustrations and adding advice on the work.
Lower Unit
1. Special tools
Spring Pin Tool A
P/N. 345-72227-0 (¿3.0)
P/N. 3 9-72217-0 (¿3.5)
Removing spring pin
¿100 x ¿79.5 x ¿51.5 x ¿ 1.5
Center Plate
P/N. 3AC-99701-0
Removing or installing propeller
shaft housing bearing
Bevel Gear B Nut Wrench
MX50:P/N. 34 -72231-0
Removing or attaching pinion
(B) gear nut
Roller Bearing Puller Kit
MX50:P/N. 3C8-72700-0
MWX50:P/N. 3B7-72700-0
Removing or attaching gear case and
propeller shaft housing needle bearing
-2
iii
①
Spring Pin Tool B
P/N. 345-72228-0 (¿3.0) Propeller Shaft Housing Puller Ass'y Driver Rod
P/N. 3 9-72218-0 (¿3.5) P/N. 3A3-72259-0 P/N. 3AC-99702-0
Removing propeller shaft Used in combination with center
Installing spring pin
housing place and various attachments
¿31.5 x ¿25 x H32
Lower Unit
2. Parts Layout
Gear Case (Drive Shaft, MX50)
Roller Bearing Attachment
MX50:P/N. 3MC-99710-0 Bevel Gear Bearing Install Tool Bevel Gear Nut Socket
MWX50:P/N. 3LC-99710-0 P/N. 3C8-72719-0 P/N. 34 -72232-0
OBM OBM OBM
Installing forward (A) gear Removing or attaching pinion OBM
Used in combination with driver rod and center plate
bearing
Attaching propeller shaft housing needle bearing (B) gear nut
28
Bevel Gear B Nut Wrench Universal Puller Plate Roller Bearing Press Kit
MWX50:P/N. 353-72231-0 P/N. 3AC-99750-0 P/N. 3LC-72900-0
Removing or attaching pinion Removing reverse (C) gear Removing or attaching gear case
(B) gear nut bearing needle bearing
3B7-72731-0
3B7-72732-0
3B7-72733-0
1342
Bevel Gear Bearing Puller Ass'y 1342
Slide Hammer Ass'y MX50:P/N. 3A3-72755-0 Bearing Outer Press Kit
P/N. 3AC-99080-0 MWX50:P/N. 3B7-72755-0 P/N. 3B7-72739-1
Removing forward (A) gear Removing forward (A) gear bearing Attaching forward (A) gear
bearing outer race outer race bearing outer race 1342
2st 50D2 2011
Ref.
Description
No.
1-1 Gear Case Ass'y
1-2 Gear Case Ass'y
2 Roller Bearing 22-30-30
3 Tapered Roller Bearing 32007
4 Plug
5 Plug
Gasket 10.1-15-1
7 Gasket 8.1-15-1
8 Trim Tab
9 Bolt
10 Pre-Coated Bolt -2
11 Washer
12 Bevel Gear Ass'y (A)
13 Bevel Gear B
-4
⑤
②
④
P/L Fig. 14
OBM OBM OBM
OBM TEF
TEF
OBM OBM OBM
OBM GEAR
OBM OBM OBM GEAR GEAR GEAR
OBM
OBM
OBM OBM OBM
GEAR GEAR GEAR G17
LIT
OBM OBM OBM GEAR GEAR GEAR GEAR
LIT
GEAR
OBM G17 G17
1342
G17 G17
G17
OBM OBM OBM 1342 1342
OBM
OBM OBM OBM
OBM
GEAR GEAR GEAR
GEAR
OBM OBM OBM
OBM
OBM OBM OBM
OBM
1342
1342
OBM OBM OBM
OBM
1342
OBM OBM OBM
OBM
OBM OBM OBM
OBM
OBM OBM OBM
OBM
OBM OBM OBM
OBM
Ref.
Q'ty Remarks Description Q'ty Remarks
No.
1 for Transom "S", "L" 14 Nut 1
1 for Transom "UL" with 15 Bevel Gear C 1
Sub Water Pipe 1 Washer 22.1-28-3 1
1 o not reuse. 17-1 Shim 41-51.5-0.1 A
1 17-2 Shim 41-51.5-0.15 A
o not reuse.
2 17-3 Shim 41-51.5-0.3 A
1 17-4 Shim 41-51.5-0.5 A Selection if necessary
1 18-1 Shim 3 -44-0.3 A
o not reuse.
2 o not reuse. 18-2 Shim 3 -44-0.15 A
1 18-3 Shim 3 -44-0.1 A
1 19 Propeller Shaft 1
2 20 Pin 1
2 21 Clutch 1
1 22 Spring Retainer 1
1 23 Spring 1
2st 50D2 2011
Bearing
5
-20
⑥
③
Lower Unit
12) Disassembly of Propeller Shaft
Housing Ass'y
1. Pull out propeller shaft assÕy 1 .
2. Remove reverse (C) gear by using bladed screw
2
1
drivers .
3
3
2
3. Check oil seal for wear and crack.
4
4 Replace if necessary.
4. Remove bearing .
5
5
CAUTION
Heat propeller shaft housing by putting it in
the hot water of approximately 60 - 70˚C
(140 - 158˚F), and remove bearing 4.
CAUTION
Be careful not to burn.
Heating of propeller shaft housing can also be
o not reuse. made by using a heat gun or heat lamp.
2st 50D2 2011
GB
2st X50D2 2011