Disassembly Procedure; Preparation For Disassembly - Yanmar 4LHA-HTP Operation Manual

Chapter 4 Intake and Exhaust System
4. Turbocharger
4-5

Disassembly Procedure

4 - 5 - 1

Preparation for disassembly

In addition to the general tools, the following special tools are required for disassembling and
reassembling the turbocharger.
Tool name
For removing thrust bearing and thrust
Bar
bushing
For removing and installing floating
Pliers
bearing retaining ring
For removing and installing seal ring
Pliers
Torque screwdriver for
TORX bolt
(Universal type)
For installing thrust bearing, for
5 to 50kgf-cm
IVI4(l.27±0.1N-m(13kgfcm)]
(0.49 to 4.90 N-m)
For installing turbine housing, for M8
Torque wrench for
TORX bolt [28+1Nm(285kgf-cm)]
(Universal type)
For installing compressor housing,
f o r M 8 [23+1N m(230kgf cm)]
For installing seal plate, for
M8(23±1N-m(230kgf-cm))
Torque wrench
For tightening shaft end nut, for
(single purpose type)
M7[7.84Nm(80kgfcm))
For fixing turbine shaft
Box spanner
(14mm x 12 pointed head)
For measuring play in axial and radial
Probe
directions
To be knurled here
Use
8
15
(rolette)
H 0.26X0.45
Illustration
106
'MjrufrtrttmAU
Material: Copper or brass
Available in the market
(Type: TORX TT20 or equivalent)
Available in the market
(Type: TORX TT40 or equivalent)
Box part alone may be used.
To be attached to a dial indicator
11 24
2:60
1 0 R - 5 R
10R.
5R
4-11
i 4LHA Serk